Slide Sensor Malfunction (B2650)
DESCRIPTION
When the
position control ECU assembly does not receive a slide motor position
sensor signal despite the seat having been moved forward or backward by
power seat motor operation, this DTC is stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B2650 | Slide Sensor Malfunction |
Slide motor position sensor signal not received when power seat moved forward or backward |
- Position control ECU assembly
- Slide motor (separate type front seat cushion spring assembly LH)
- Wire harness or connector
|
WIRING DIAGRAM
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
|
NEXT |
 | |
(a) Check for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2650 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (SEAT SLIDE OPERATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Seat Slide Operation |
Seat slide operation |
OFF/Rear/Front | - |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Seat Slide Operation |
OK:
Slide motor operates normally.
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 4. |
CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT) |
(a) Disconnect the R23 slide motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R23-5 (SSRS) - R23-6 (SENG) |
Slide switch on | 4.8 to 5.1 V |
| NG |
| GO TO STEP 6 |
|
OK | |
| |
| 5. |
CHECK SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| (a) Reconnect the R23 slide motor (separate type front seat cushion spring assembly LH) connector. |
 |
|
*a | Component with harness connected
(Separate Type Front Seat Cushion Spring Assembly LH) | | |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R23-5 (SSRS) - Body ground |
Slide motor operating |
4.5 to 4.8 V |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPLACE SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-26 (SSRS) - R23-5 (SSRS) |
Always | Below 1 Ω |
|
R32-26 (SSRS) or R23-5 (SSRS) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R23-6 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R23-6 (SENG) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 7. |
INSPECT SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the slide motor (separate type front seat cushion spring assembly LH).
Click here 
(b) Inspect the slide motor (separate type front seat cushion spring assembly LH).
Click here
| NG |
| REPLACE SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R33 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R33-1 (SLD+) - R23-4 (SLD+) |
Always | Below 1 Ω |
|
R33-1 (SLD+) or R23-4 (SLD+) - Body ground |
Always | 10 kΩ or higher |
|
R33-5 (SLD-) - R23-3 (SLD-) |
Always | Below 1 Ω |
|
R33-5 (SLD-) or R23-3 (SLD-) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Reclining Sensor Malfunction (B2651)
DESCRIPTION
When the
position control ECU assembly does not receive a reclining motor
position sensor signal despite the seat having been moved forward or
rearward by power seat motor operation, this DTC is stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B2651 | Reclining Sensor Malfunction |
Reclining motor position sensor signal not received when power seat moved forward or rearward |
- Position control ECU assembly
- Reclining motor (front seatback frame sub-assembly LH)
- Wire harness or connector
|
WIRING DIAGRAM
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
|
NEXT |
 | |
(a) Check for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2651 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (SEAT RECLINING OPERATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Seat Reclining | Seat reclining operation |
OFF/Rear/Front | - |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Seat Reclining |
OK:
Reclining motor operates normally.
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 4. |
CHECK POSITION CONTROL ECU ASSEMBLY (RECLINING MOTOR CIRCUIT) |
(a) Disconnect the a10 reclining motor (front seatback frame sub-assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
a10-4 (SSRR) - a10-2 (SENG) |
Reclining switch on | 4.8 to 5.1 V |
| NG |
| GO TO STEP 6 |
|
OK | |
| |
| 5. |
CHECK RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
| (a) Reconnect the a10 reclining motor (front seatback frame sub-assembly LH) connector. |
 |
|
*a | Component with harness connected
(Reclining Motor (Front Seatback Frame Sub-assembly LH)) | | |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
a10-4 (SSRR) - Body ground |
Reclining motor operating |
4.5 to 4.8 V |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
| 6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-11 (SSRR) - a10-4 (SSRR) |
Always | Below 1 Ω |
|
R32-11 (SSRR) or a10-4 (SSRR) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - a10-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or a10-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 7. |
INSPECT RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
(a) Remove the reclining motor (front seatback frame sub-assembly LH).
Click here 
(b) Inspect the reclining motor (front seatback frame sub-assembly LH).
Click here
| NG |
| REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)) |
(a) Disconnect the R33 and R30 position control ECU assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R33-10 (RCL+) - a10-3 (RCL+) |
Always | Below 1 Ω |
|
R33-10 (RCL+) or a10-3 (RCL+) - Body ground |
Always | 10 kΩ or higher |
|
R30-6 (RCL-) - a10-1 (RCL-) |
Always | Below 1 Ω |
|
R30-6 (RCL-) or a10-1 (RCL-) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Front Vertical Sensor Malfunction (B2652)
DESCRIPTION
When the
position control ECU assembly does not receive a front vertical motor
position sensor signal despite the seat having been moved upward or
downward by power seat motor operation, this DTC is stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B2652 | Front Vertical Sensor Malfunction |
Front vertical motor position sensor signal not received when power seat moved upward or downward |
- Position control ECU assembly
- Front vertical motor (separate type front seat cushion spring assembly LH)
- Wire harness or connector
|
WIRING DIAGRAM
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
|
NEXT |
 | |
(a) Check for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2652 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (SEAT FRONT VERTICAL OPERATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Front Vertical Operation |
Seat front vertical operation |
OFF/Down/Up | - |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Front Vertical Operation |
OK:
Front vertical motor operates normally.
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 4. |
CHECK POSITION CONTROL ECU ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT) |
(a) Disconnect the R27 front vertical motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R27-4 (SSFV) - R27-2 (SENG) |
Front vertical switch on |
4.8 to 5.1 V |
| NG |
| GO TO STEP 6 |
|
OK | |
| |
| 5. |
CHECK FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| (a) Reconnect the R27 front vertical motor (separate type front seat cushion spring assembly LH) connector. |
 |
|
*a | Component with harness connected
(Front Vertical Motor (Separate Type Front Seat Cushion Spring Assembly LH)) | | |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R27-4 (SSFV) - Body ground |
Front vertical motor operating |
4.5 to 4.8 V |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPLACE FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 6. |
CHECK
HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT VERTICAL
MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-10 (SSFV) - R27-4 (SSFV) |
Always | Below 1 Ω |
|
R32-10 (SSFV) or R27-4 (SSFV) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R27-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R27-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 7. |
INSPECT FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the front vertical motor (separate type front seat cushion spring assembly LH).
Click here 
(b) Inspect the front vertical motor (separate type front seat cushion spring assembly LH).
Click here
| NG |
| REPLACE FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
|
OK | |
| |
| 8. |
CHECK
HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT VERTICAL
MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R33 and R30 position control ECU assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R33-7 (FRV+) - R27-3 (FRV+) |
Always | Below 1 Ω |
|
R33-7 (FRV+) or R27-3 (FRV+) - Body ground |
Always | 10 kΩ or higher |
|
R30-4 (FRV-) - R27-1 (FRV-) |
Always | Below 1 Ω |
|
R30-4 (FRV-) or R27-1 (FRV-) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lifter Sensor Malfunction (B2653)
DESCRIPTION
When the
position control ECU assembly does not receive a lifter motor position
sensor signal despite the seat having been moved upward or downward by
power seat motor operation, this DTC is stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B2653 | Lifter Sensor Malfunction |
Lifter motor position sensor signal not received when power seat moved upward or downward |
- Position control ECU assembly
- Lifter motor (separate type front seat cushion spring assembly LH)
- Wire harness or connector
|
WIRING DIAGRAM
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
|
NEXT |
 | |
(a) Check for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2653 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (SEAT LIFTER OPERATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Lifter Operation | Seat lifter operation |
OFF/Down/Up | - |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Lifter Operation |
OK:
Lifter motor operates normally.
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 4. |
CHECK POSITION CONTROL ECU ASSEMBLY (LIFTER MOTOR CIRCUIT) |
(a) Disconnect the R29 lifter motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R29-4 (SSRL) - R29-2 (SENG) |
Lifter switch on | 4.8 to 5.1 V |
| NG |
| GO TO STEP 6 |
|
OK | |
| |
| 5. |
CHECK LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| (a) Reconnect the R29 lifter motor (separate type front seat cushion spring assembly LH) connector. |
 |
|
*a | Component with harness connected
(Lifter Motor (Separate Type Front Seat Cushion Spring Assembly LH)) | | |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R29-4 (SSRL) - Body ground |
Lifter motor operating |
4.5 to 4.8 V |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPLACE LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-25 (SSRL) - R29-4 (SSRL) |
Always | Below 1 Ω |
|
R32-25 (SSRL) or R29-4 (SSRL) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R29-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R29-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 7. |
INSPECT LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the lifter motor (separate type front seat cushion spring assembly LH).
Click here 
(b) Inspect the lifter motor (separate type front seat cushion spring assembly LH).
Click here
| NG |
| REPLACE LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R33 and R30 position control ECU assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R33-6 (LFT+) - R29-3 (LFT+) |
Always | Below 1 Ω |
|
R33-6 (LFT+) or R29-3 (LFT+) - Body ground |
Always | 10 kΩ or higher |
|
R30-5 (LFT-) - R29-1 (LFT-) |
Always | Below 1 Ω |
|
R30-5 (LFT-) or R29-1 (LFT-) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Short in Sensor with Motor Power Supply Circuit (B2658)
DESCRIPTION
This DTC is
stored when a power seat motor operates (a position control sensor is
being supplied with power) and the power supply voltage does not rise to
the specified value.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B2658 | Short in Sensor with Motor Power Supply Circuit |
Problem with the voltage supplied to the position control sensor. |
- Position control ECU assembly
- Slide motor (separate type front seat cushion spring assembly LH)
- Front vertical motor (separate type front seat cushion spring assembly LH)
- Lifter motor (separate type front seat cushion spring assembly LH)
- Reclining motor (front seatback frame sub-assembly LH)
- Wire harness or connector
|
WIRING DIAGRAM
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
|
NEXT |
 | |
(a) Check for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2658 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Disconnect the R23 slide motor (separate type front seat cushion spring assembly LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-26 (SSRS) - R23-5 (SSRS) |
Always | Below 1 Ω |
|
R32-26 (SSRS) or R23-5 (SSRS) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R23-6 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R23-6 (SENG) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT) |
(a) Reconnect the R23 slide motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R23-5 (SSRS) - R23-6 (SENG) |
Slide switch on | 4.8 to 5.1 V |
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
|
OK | |
| |
| 5. |
CHECK
HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT VERTICAL
MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Disconnect the R27 front vertical motor (separate type front seat cushion spring assembly LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-10 (SSFV) - R27-4 (SSFV) |
Always | Below 1 Ω |
|
R32-10 (SSFV) or R27-4 (SSFV) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R27-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R27-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 6. |
CHECK POSITION CONTROL ECU ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT) |
(a) Reconnect the R27 front vertical motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R27-4 (SSFV) - R27-2 (SENG) |
Front vertical switch on |
4.8 to 5.1 V |
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
|
OK | |
| |
| 7. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Disconnect the R29 lifter motor (separate type front seat cushion spring assembly LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-25 (SSRL) - R29-4 (SSRL) |
Always | Below 1 Ω |
|
R32-25 (SSRL) or R29-4 (SSRL) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - R29-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or R29-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 8. |
CHECK POSITION CONTROL ECU ASSEMBLY (LIFTER MOTOR CIRCUIT) |
(a) Reconnect the R29 lifter motor (separate type front seat cushion spring assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R29-4 (SSRL) - R29-2 (SENG) |
Lifter switch on | 4.8 to 5.1 V |
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
|
OK | |
| |
| 9. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Disconnect the a10 reclining motor (front seatback frame sub-assembly LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-11 (SSRR) - a10-4 (SSRR) |
Always | Below 1 Ω |
|
R32-11 (SSRR) or a10-4 (SSRR) - Body ground |
Always | 10 kΩ or higher |
|
R32-12 (SENG) - a10-2 (SENG) |
Always | Below 1 Ω |
|
R32-12 (SENG) or a10-2 (SENG) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 10. |
CHECK POSITION CONTROL ECU ASSEMBLY (RECLINING MOTOR CIRCUIT) |
(a) Reconnect the a10 reclining motor (front seatback frame sub-assembly LH) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
a10-4 (SSRR) - a10-2 (SENG) |
Reclining switch on | 4.8 to 5.1 V |
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
|
OK | |
| |
| 11. |
REPLACE FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Replace the front vertical motor (separate type front seat cushion spring assembly LH) with a new or known good one.
Click here 
|
NEXT | |
| |
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
(b) Recheck for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2685 is not output.
| OK |
| END (FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) WAS DEFECTIVE) |
|
NG | |
| |
| 13. |
REPLACE LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Replace the lifter motor (separate type front seat cushion spring assembly LH) with a new or known good one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
(b) Recheck for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2685 is not output.
| OK |
| END (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) WAS DEFECTIVE) |
|
NG | |
| |
| 15. |
REPLACE SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Replace the slide motor (separate type front seat cushion spring assembly LH) with a new or known good one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
(b) Recheck for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2685 is not output.
| OK |
| END (SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) WAS DEFECTIVE) |
|
NG | |
| |
| 17. |
REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
(a) Replace the reclining motor (front seatback frame sub-assembly LH) with a new or known good one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs.
Body Electrical > Driver Seat > Clear DTCs
(b) Recheck for DTCs.
Body Electrical > Driver Seat > Trouble Codes
OK:
DTC B2685 is not output.
| OK |
| END (RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) WAS DEFECTIVE) |
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
Customize Parameters
CUSTOMIZE PARAMETERS
CUSTOMIZE FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)
NOTICE:
- When the customer requests a change in a function, first make sure that the function can be customized.
- Record the current settings before customizing.
HINT:
The following items can be customized.
(a) Customizing with the Techstream
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn the Techstream on.
(4) Enter the following menus: Customize Setting / Smart Key / Access or Seat.
(5) Select the setting by referring to the table below.
Smart Key / Access
|
Tester Display | Description |
Default | Setting |
ECU |
| Seat position/Tilt & Telesco memory recall setting |
This
customize function switches the condition of the seat position and Tilt
& Telesco memory recall. Possible recall activation parameter
"D-door unlock and open by smart system" or "Any door unlock and open
with smart system". | D Door |
0:D Door,1:Any Door | Main body ECU (Multiplex network body ECU) |
Seat
|
Tester Display | Description |
Default | Setting |
ECU |
| D Seat Operation Interference Avoidance Function |
Function to reverse operation when jam detection is detected during slide direction driver seat |
ON | 0:ON,1:OFF |
Position control ECU assembly |
|
Seat Move Distance | Allows customizing of the seat movement distance for the power easy access system. |
Standard | 00:OFF,01:Little,10:Standard |
Main body ECU (Multiplex network body ECU) |
(b) Customizing with the multi-display
(1) Turn the engine switch on (IG).
(2) Enter the following menus: MENU / Setup / Vehicle / Vehicle customization / Other Vehicle Settings.
(3) Select the setting by referring to the table below.
|
Display | Description |
Default | Setting |
Relevant ECU |
| Driver's seat Easy-Exit Slide |
Allows customizing of the seat movement distance for the power seat power easy access system. |
Full | Off / Partial / Full |
Main body ECU (Multiplex network body ECU) |
Data List / Active Test
DATA LIST / ACTIVE TEST
DATA LIST
NOTICE:
In
the table below, the values listed under "Normal Condition" are
reference values. Do not depend solely on these reference values when
deciding whether a part is faulty or not.
HINT:
Using
the Techstream to read the Data List allows the values or states of
switches, sensors, actuators and other items to be read without removing
any parts. This non-intrusive inspection can be very useful because
intermittent conditions or signals may be discovered before parts or
wiring is disturbed. Reading the Data List information early in
troubleshooting is one way to save diagnostic time.
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Mirror L / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Mirror L > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Seat Memory Switch1 | M1 switch |
ON or OFF | ON: M1 switch on
OFF: M1 switch off | - |
|
Seat Memory Switch2 | M2 switch |
ON or OFF | ON: M2 switch on
OFF: M2 switch off | - |
|
Seat Memory Switch3 | M3 switch* |
ON or OFF | ON: M3 switch on
OFF: M3 switch off | Not applicable |
|
Seat Memory Set SW | SET switch |
ON or OFF | ON: SET switch on
OFF: SET switch off | - |
|
+B Voltage Input Value |
Power supply for outer mirror control ECU assembly |
MIN: 0, MAX: 25.5 | Within range from 11 to 14 V |
- |
- *: Although this item is displayed on the Techstream, it is not applicable to this vehicle.
(f) Enter the following menus: Body Electrical / Driver Seat / Data List.
(g) Read the Data List according to the display on the Techstream.
Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Reclining Rear | Reclining switch signal (Rearward) |
ON or OFF | ON: Reclining switch (Rearward) on
OFF: Reclining switch (Rearward) off |
- |
| Reclining Front |
Reclining switch signal (Forward) |
ON or OFF | ON: Reclining switch (Forward) on
OFF: Reclining switch (Forward) off |
- |
| Front Vertical Down |
Front vertical switch signal (Downward) |
ON or OFF | ON: Front vertical switch (Downward) on
OFF: Front vertical switch (Downward) off |
- |
| Front Vertical Up |
Front vertical switch signal (Upward) |
ON or OFF | ON: Front vertical switch (Upward) on
OFF: Front vertical switch (Upward) off |
- |
| Lifter Switch Down |
Lifter switch signal (Downward) |
ON or OFF | ON: Lifter switch (Downward) on
OFF: Lifter switch (Downward) off |
- |
| Lifter Switch Up |
Lifter switch signal (Upward) |
ON or OFF | ON: Lifter switch (Upward) on
OFF: Lifter switch (Upward) off |
- |
| Slide Rear |
Slide switch signal (Rearward) |
ON or OFF | ON: Slide switch (Rearward) on
OFF: Slide switch (Rearward) off |
- |
| Slide Front |
Slide switch signal (Forward) |
ON or OFF | ON: Slide switch (Forward) on
OFF: Slide switch (Forward) off |
- |
| Seat Memory No1 |
Seat position memorized with M1 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
| Seat Memory No2 |
Seat position memorized with M2 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
| Seat Memory No3 |
Seat position memorized with M3 switch* |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
Not applicable |
|
Ignition Switch | Communication state of engine switch signal |
ON or OFF | ON: Engine switch on (IG)
OFF: Engine switch off or on (ACC) |
- |
| Parking Brake SW |
Parking brake switch status |
ON or OFF | ON: Parking brake applied
OFF: Parking brake released |
- |
| Vehicle Speed |
Vehicle speed data | Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) |
Actual vehicle speed |
- |
| Slide Position |
Seat sliding position |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Reclining Position |
Seat reclining position |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Front Vertical Position |
Seat front vertical position |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Lifter Position |
Seat lifter position |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Slide Pos Mem No1 |
Seat slide position memorized with M1 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Reclining Pos Mem No1 |
Seat reclining position memorized with M1 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Frnt Vrtcl Pos Mem No1 |
Front vertical position memorized with M1 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Lifter Pos Mem No1 |
Lifter position memorized with M1 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Slide Pos Mem No2 |
Seat slide position memorized with M2 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Reclining Pos Mem No2 |
Seat reclining position memorized with M2 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Frnt Vrtcl Pos Mem No2 |
Front vertical position memorized with M2 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Lifter Pos Mem No2 |
Lifter position memorized with M2 switch |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Slide Pos Mem No3 |
Seat slide position memorized with M3 switch* |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
Not applicable |
|
Reclining Pos Mem No3 | Seat reclining position memorized with M3 switch* |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
Not applicable |
|
Frnt Vrtcl Pos Mem No3 |
Front vertical position memorized with M3 switch* |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
Not applicable |
|
Lifter Pos Mem No3 | Lifter position memorized with M3 switch* |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
Not applicable |
|
Lumbar Switch UP | Lumbar support adjuster switch signal (Upward) |
ON or OFF | ON: Lumbar support adjuster switch (Upward) on
OFF: Lumbar support adjuster switch (Upward) off |
- |
| Lumbar Switch Down |
Lumbar support adjuster switch signal (Downward) |
ON or OFF | ON: Lumbar support adjuster switch (Downward) on
OFF: Lumbar support adjuster switch (Downward) off |
- |
| Lumbar Switch Front |
Lumbar support adjuster switch signal (Forward) |
ON or OFF | ON: Lumbar support adjuster switch (Forward) on
OFF: Lumbar support adjuster switch (Forward) off |
- |
| Lumbar Switch Rear |
Lumbar support adjuster switch signal (Rearward) |
ON or OFF | ON: Lumbar support adjuster switch (Rearward) on
OFF: Lumbar support adjuster switch (Rearward) off |
- |
| Lifter Initialize Flag |
Seat lifter limit position memory |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
Front Vertical Init Flag |
Seat front vertical limit position memory |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
Reclining Position Init Flg |
Seat reclining limit position memory |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
Slide Position Init Flag |
Seat slide limit position memory |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
Slide Position Front Limit |
Seat slide limit position (front) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Slide Position Rear Limit |
Seat slide limit position (rear) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Reclining Position Front Limit |
Seat reclining limit position (front) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Reclining Position Rear Limit |
Seat reclining limit position (rear) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Front Vertical UP Limit |
Seat front vertical limit position (up) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Front Vertical Down Limit |
Seat front vertical limit position (down) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Lifter Position UP Limit |
Seat lifter limit position (up) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Lifter Position Down Limit |
Seat lifter limit position (down) |
Min: 0, Max: 65535 | Within range from 0 to 65535 |
- |
| Memory Button Buzzer Request |
Driver seat buzzer request display |
OFF, MOVE, REGISTRY, CANCEL, REG NG, REG WAIT |
OFF: Buzzer does not sound MOVE: Request to sound buzzer when starting memory replay
REGISTRY: Request to sound buzzer when starting memory registration
CANCEL: Request to sound buzzer when canceling memory call registration
REG NG: Request to sound buzzer when memory call registration not possible
REG WAIT: Request to sound buzzer when starting memory call cabin scan |
- |
| Driver Seat Request Command |
Driver seat operation request received |
OFF, MEMORY, MEM MOV, MEM SOD, RET MOV, AWY MOV, AWY SOD, MEM AWY or MEM RET |
OFF: No instruction MEMORY: Request to memorize MEM MOV: Request to recall memory
MEM SOD: Request to replay RET MOV: Request to return AWY MOV: Request to move away
AWY SOD: Request to recall away position memory MEM AWY: Request to recall memorized position of seatback
MEM RET: Request to restore seatback to memorized position |
- |
| Driver Seat POS REQ |
Seat memory switch operation value |
OFF, MEM1, MEM2, MEM3*, DRV1*, DRV2* or DRV3* |
OFF: No operation MEM1: M1 switch operation status MEM2: M2 switch operation status
MEM3: M3 switch operation status* DRV1: Other 1 operation status*
DRV2: Other 2 operation status* DRV3: Other 3 operation status* |
- |
| Away Move Range Scale |
Seat travel distance for power easy access system |
NONE, SMALL, STANDRD or LONG |
NONE: Seat travel distance none SMALL: Seat travel distance short
STANDRD: Seat travel distance normal LONG: Seat travel distance long |
- |
| Return Move |
Return function | NOT AVL or AVAIL |
NOT AVL: Not available AVAIL: Available |
- |
| Return & Away Function |
Return & away function |
NOT AVL or AVAIL | NOT AVL: Not available
AVAIL: Available | - |
|
Driver Seat Buckle SW | Driver seat belt buckle switch |
ON or OFF | ON: Driver seat belt fastened
OFF: Driver seat belt unfastened |
- |
| Return Position |
Return position | Min: 0, Max: 65535 |
Within range from 0 to 65535 |
- |
| Shift SW Position |
Park state signal | Shift P or Shift Other |
Shift P: Shift lever in P Shift Other: Shift lever in a position other than P |
- |
| ECU Voltage Value |
Voltage of position control ECU assembly |
0.95 to 20.84V | 11 to 14V |
- |
| Battery Voltage Value |
Battery voltage | 0.95 to 20.84V |
11 to 14V | - |
|
Number of Trouble Codes |
Number of trouble codes |
Min.: 0 or Max.: 255 | Number of DTCs will be displayed |
- |
- *: Although this item is displayed on the Techstream, it is not applicable to this vehicle.
(h) Enter the following menus: Body Electrical / Main Body / Data List.
(i) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
FL Door Courtesy SW | Front door courtesy light switch assembly (driver door) signal |
ON or OFF | ON: Driver door open
OFF: Driver door closed |
- |
| Seat position/Tilt & Telesco memory recall setting |
Setting of customize function "Seat position/Tilt & Telesco memory recall setting" |
D Door or Any Door | Customize setting displayed |
- |
| Mem SW No. w/KeyID1 |
Memory switch linked with key ID1 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID1 MEM SW1: M1 switch linked with key ID1
MEM SW2: M2 switch linked with key ID1 MEM SW3: M3 switch linked with key ID1* |
- |
| Mem SW No. w/KeyID2 |
Memory switch linked with key ID2 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID2 MEM SW1: M1 switch linked with key ID2
MEM SW2: M2 switch linked with key ID2 MEM SW3: M3 switch linked with key ID2* |
- |
| Mem SW No. w/KeyID3 |
Memory switch linked with key ID3 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID3 MEM SW1: M1 switch linked with key ID3
MEM SW2: M2 switch linked with key ID3 MEM SW3: M3 switch linked with key ID3* |
- |
| Mem SW No. w/KeyID4 |
Memory switch linked with key ID4 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID4 MEM SW1: M1 switch linked with key ID4
MEM SW2: M2 switch linked with key ID4 MEM SW3: M3 switch linked with key ID4* |
- |
| Mem SW No. w/KeyID5 |
Memory switch linked with key ID5 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID5 MEM SW1: M1 switch linked with key ID5
MEM SW2: M2 switch linked with key ID5 MEM SW3: M3 switch linked with key ID5* |
- |
| Mem SW No. w/KeyID6 |
Memory switch linked with key ID6 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID6 MEM SW1: M1 switch linked with key ID6
MEM SW2: M2 switch linked with key ID6 MEM SW3: M3 switch linked with key ID6* |
- |
| Mem SW No. w/KeyID7 |
Memory switch linked with key ID7 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID7 MEM SW1: M1 switch linked with key ID7
MEM SW2: M2 switch linked with key ID7 MEM SW3: M3 switch linked with key ID7* |
- |
| Driver Seat Memory1 |
Seat position memorized with M1 switch |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
Driver Seat Memory2 | Seat position memorized with M2 switch |
ON or OFF | ON: Memorized
OFF: Not memorized | - |
|
D Seat Configuration | Position control ECU assembly status |
NONE, Not RTN or Return |
NONE: Position control ECU assembly not connected Not RTN: Position control ECU assembly connected (Not including power seat power easy access system function)
Return: Position control ECU assembly connected (Including power seat power easy access system function) |
- |
| Communication P-Seat |
Connection status between position control ECU assembly and main body ECU (multiplex network body ECU)* |
STOP or OK | STOP: Communication stopped
OK: Normal communication |
Not applicable |
|
Communication D-Seat | Connection status between position control ECU assembly and main body ECU (multiplex network body ECU)* |
STOP or OK | STOP: Communication stopped
OK: Normal communication |
Not applicable |
- *: Although this item is displayed on the Techstream, it is not applicable to this vehicle.
(j) Enter the following menus: Body Electrical / Master Switch / Data List.
(k) Read the Data List according to the display on the Techstream.
Body Electrical > Master Switch > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Door Lock Switch Status |
Door control switch (multiplex network master switch assembly) lock signal |
ON or OFF | ON: Lock side of door control switch (multiplex network master switch assembly) pushed
OFF: Lock side of door control switch (multiplex network master switch assembly) not pushed |
- |
| Door Unlock Switch Status |
Door control switch (multiplex network master switch assembly) unlock signal |
ON or OFF | ON: Unlock side of door control switch (multiplex network master switch assembly) pushed
OFF: Unlock side of door control switch (multiplex network master switch assembly) not pushed |
- |
(l) Enter the following menus: Powertrain / Engine / Data List.
(m) Read the Data List according to the display on the Techstream.
Powertrain > Engine > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Shift SW Status (P Range) |
Park/neutral position switch status |
ON or OFF | ON: Shift lever in P
OFF: Shift lever not in P |
- |
ACTIVE TEST
HINT:
Using
the Techstream to perform Active Tests allows relays, VSVs, actuators
and other items to be operated without removing any parts. This
non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is
disturbed. Performing Active Tests early in troubleshooting is one way
to save diagnostic time. Data List information can be displayed while
performing Active Tests.
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Seat Reclining | Seat reclining operation |
OFF/Rear/Front | - |
|
Front Vertical Operation |
Seat front vertical operation |
OFF/Down/Up | - |
|
Lifter Operation | Seat lifter operation |
OFF/Down/Up | - |
|
Seat Slide Operation |
Seat slide operation |
OFF/Rear/Front | - |
|
Buzzer | Buzzer operation |
OFF/ON | - |
|
Lumbar Lift | Lumbar support operation (Upward - Downward) |
OFF/UP/DOWN | - |
|
Lumbar Slide | Lumbar support operation (Forward - Rearward) |
OFF/Rear/Front | - |
Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a)
Front power seat control system (w/ Memory) data and Diagnostic Trouble
Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of
the vehicle. When the system seems to be malfunctioning, use the
Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
Click here 
INSPECT BATTERY VOLTAGE
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Front Power Seat Control System (w/ Memory) |
DTC No. | Detection Item |
Link |
| B2650 |
Slide Sensor Malfunction |
 |
|
B2651 | Reclining Sensor Malfunction |
|
|
B2652 | Front Vertical Sensor Malfunction |
|
|
B2653 | Lifter Sensor Malfunction |
|
|
B2658 | Short in Sensor with Motor Power Supply Circuit |
|
Dtc Check / Clear
DTC CHECK / CLEAR
CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Trouble Codes.
Body Electrical > Driver Seat > Trouble Codes
(e) Check for DTCs.
CLEAR DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Trouble Codes.
Body Electrical > Driver Seat > Clear DTCs
(e) Clear the DTCs.
Front Power Seat does not Operate with Front Power Seat Switch
DESCRIPTION
Signals are
input into the position control ECU assembly. The built-in ECU manages
the signals received from the power seat switch and operates each motor.
If the position control ECU assembly receives more than 2 motor
operation signals for the same motor, the motor will be stopped. Manual
operation resumes when the position control ECU assembly receives only 1
signal.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. |
CHECK FRONT POWER SEAT OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here 
|
Result | Proceed to |
|
All power seat functions do not operate |
A |
| One or more power seat functions do not operate |
B |
| B |
 | GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate) |
|
A |
 | |
| 2. |
INSPECT FRONT POWER SEAT SWITCH LH |
(a) Remove the front power seat switch LH.
Click here
(b) Inspect the front power seat switch LH.
Click here
| NG |
| REPLACE FRONT POWER SEAT SWITCH LH |
|
OK | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SUPPLY) |
(a) Disconnect the R33 and R32 position control ECU assembly connectors.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
R33-3 (B) - Body ground |
Always | 11 to 14 V |
|
R32-15 (SYSB) - Body ground |
Always | 11 to 14 V |
|
R32-1 (IG) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
R32-1 (IG) - Body ground |
Engine switch off | Below 1 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R33-2 (E) - Body ground |
Always | Below 1 Ω |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R31-20 (E) - Body ground |
Always | Below 1 Ω |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the front power seat control system (w/ Memory).
- *: Use the Techstream.
PROCEDURE
|
1. | VEHICLE BROUGHT TO WORKSHOP |
|
NEXT |
 | |
| 2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer to confirm the problem.
Click here 
|
NEXT | |
| |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays.
(c)
Check the connector connections and terminals to make sure that there
are no abnormalities such as loose connections, deformation, etc.
|
NEXT | |
| |
| 4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
|
Result | Proceed to |
|
CAN DTCs are not output |
A |
| CAN DTCs are output |
B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
A | |
| |
| 5. |
INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
|
Result | Proceed to |
|
LIN DTCs are not output |
A |
| LIN DTCs are output |
B |
| B |
| GO TO LIN COMMUNICATION SYSTEM |
|
A | |
| |
(a) Clear the DTCs.
Click here
Body Electrical > Driver Seat > Clear DTCs
(b) Recheck for DTCs.
Click here
Body Electrical > Driver Seat > Trouble Codes
|
Result | Proceed to |
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
A | |
| |
| 7. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
|
Result | Proceed to |
|
Fault is not listed in Problem Symptoms Table |
A |
| Fault is listed in Problem Symptoms Table |
B |
| B |
| GO TO STEP 9 |
|
A | |
| |
| 8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check
Click here
(b) Data List / Active Test
Click here
(c) Terminals of ECU
Click here
(d) Inspection
|
NEXT | |
| |
|
NEXT | |
| |
| NEXT |
| END |
One or more Power Seat Motors do not Operate
DESCRIPTION
Signals are
input into the position control ECU assembly. The built-in ECU manages
the signals received from the position control ECU assembly and operates
each motor. If the position control ECU assembly receives 2 or more
operation signals for the same motor, the motor will be stopped. Manual
operation resumes when the position control ECU assembly receives only 1
signal.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. |
CHECK FRONT POWER SEAT OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here 
|
Result | Proceed to |
|
One or more power seat functions do not operate |
A |
| All power seat functions do not operate |
B |
| B |
 | GO TO OTHER DIAGNOSIS PROCEDURE (Front Power Seat does not Operate with Front Power Seat Switch) |
|
A |
 | |
| 2. |
READ VALUE USING TECHSTREAM (POWER SEAT SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Reclining Rear | Reclining switch signal (Rearward) |
ON or OFF | ON: Reclining switch (Rearward) on
OFF: Reclining switch (Rearward) off |
- |
| Reclining Front |
Reclining switch signal (Forward) |
ON or OFF | ON: Reclining switch (Forward) on
OFF: Reclining switch (Forward) off |
- |
| Front Vertical Down |
Front vertical switch signal (Downward) |
ON or OFF | ON: Front vertical switch (Downward) on
OFF: Front vertical switch (Downward) off |
- |
| Front Vertical Up |
Front vertical switch signal (Upward) |
ON or OFF | ON: Front vertical switch (Upward) on
OFF: Front vertical switch (Upward) off |
- |
| Lifter Switch Down |
Lifter switch signal (Downward) |
ON or OFF | ON: Lifter switch (Downward) on
OFF: Lifter switch (Downward) off |
- |
| Lifter Switch Up |
Lifter switch signal (Upward) |
ON or OFF | ON: Lifter switch (Upward) on
OFF: Lifter switch (Upward) off |
- |
| Slide Rear |
Slide switch signal (Rearward) |
ON or OFF | ON: Slide switch (Rearward) on
OFF: Slide switch (Rearward) off |
- |
| Slide Front |
Slide switch signal (Forward) |
ON or OFF | ON: Slide switch (Forward) on
OFF: Slide switch (Forward) off |
- |
| Lumbar Switch UP |
Lumbar support adjuster switch signal (Upward) |
ON or OFF | ON: Lumbar support adjuster switch (Upward) on
OFF: Lumbar support adjuster switch (Upward) off |
- |
| Lumbar Switch Down |
Lumbar support adjuster switch signal (Downward) |
ON or OFF | ON: Lumbar support adjuster switch (Downward) on
OFF: Lumbar support adjuster switch (Downward) off |
- |
| Lumbar Switch Front |
Lumbar support adjuster switch signal (Forward) |
ON or OFF | ON: Lumbar support adjuster switch (Forward) on
OFF: Lumbar support adjuster switch (Forward) off |
- |
| Lumbar Switch Rear |
Lumbar support adjuster switch signal (Rearward) |
ON or OFF | ON: Lumbar support adjuster switch (Rearward) on
OFF: Lumbar support adjuster switch (Rearward) off |
- |
Body Electrical > Driver Seat > Data List
|
Tester Display |
| Reclining Rear |
|
Reclining Front |
|
Front Vertical Down |
|
Front Vertical Up |
|
Lifter Switch Down |
|
Lifter Switch Up |
|
Slide Rear |
| Slide Front |
|
Lumbar Switch UP |
|
Lumbar Switch Down |
|
Lumbar Switch Front |
|
Lumbar Switch Rear |
OK:
On the Techstream screen, ON or OFF is displayed accordingly
| NG |
| GO TO STEP 10 |
|
OK | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR) |
(a) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(b) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Seat Reclining | Seat reclining operation |
OFF/Rear/Front | - |
|
Front Vertical Operation |
Seat front vertical operation |
OFF/Down/Up | - |
|
Lifter Operation | Seat lifter operation |
OFF/Down/Up | - |
|
Seat Slide Operation |
Seat slide operation |
OFF/Rear/Front | - |
|
Lumbar Lift | Lumbar support operation (Upward - Downward) |
OFF/Up/Down | - |
|
Lumbar Slide | Lumbar support operation (Forward - Rearward) |
OFF/Rear/Front | - |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Seat Reclining |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Front Vertical Operation |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Lifter Operation |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Seat Slide Operation |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Lumbar Slide |
Body Electrical > Driver Seat > Active Test
|
Tester Display |
| Lumbar Lift |
|
Result | Proceed to |
|
All power seat functions operate normally |
A |
| Slide function does not operate normally |
B |
| Front vertical function does not operate normally |
C |
| Lifter function does not operate normally |
D |
| Reclining function does not operate normally |
E |
| Lumbar support adjustment function does not operate normally |
F |
| A |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| C |
| GO TO STEP 5 |
| D |
| GO TO STEP 6 |
| E |
| GO TO STEP 7 |
| F |
| GO TO STEP 8 |
|
B | |
| |
| 4. |
INSPECT SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the slide motor (separate type front seat cushion spring assembly LH).
Click here
(b) Inspect the slide motor (separate type front seat cushion spring assembly LH).
Click here
| OK |
| GO TO STEP 9 |
| NG |
| REPLACE SLIDE MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 5. |
INSPECT FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the front vertical motor (separate type front seat cushion spring assembly LH).
Click here
(b) Inspect the front vertical motor (separate type front seat cushion spring assembly LH).
Click here
| OK |
| GO TO STEP 9 |
| NG |
| REPLACE FRONT VERTICAL MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 6. |
INSPECT LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
(a) Remove the lifter motor (separate type front seat cushion spring assembly LH).
Click here
(b) Inspect the lifter motor (separate type front seat cushion spring assembly LH).
Click here
| OK |
| GO TO STEP 9 |
| NG |
| REPLACE LIFTER MOTOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) |
| 7. |
INSPECT RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
(a) Remove the reclining motor (front seatback frame sub-assembly LH).
Click here
(b) Inspect the reclining motor (front seatback frame sub-assembly LH).
Click here
| OK |
| GO TO STEP 9 |
| NG |
| REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH) |
| 8. |
INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH |
(a) Remove the lumbar support adjuster assembly LH.
Click here
(b) Inspect the lumbar support adjuster assembly LH.
Click here
| NG |
| REPLACE LUMBAR SUPPORT ADJUSTER ASSEMBLY LH |
|
OK | |
| |
| 9. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT MOTOR) |
(a) Disconnect the R33 and R30 position control ECU assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
HINT:
Check the wire harness and connector between the position control ECU assembly and applicable motor.
Standard Resistance:
Slide Motor |
Tester Connection | Condition |
Specified Condition |
|
R33-1 (SLD+) - R23-4 (SLD+) |
Always | Below 1 Ω |
|
R33-1 (SLD+) or R23-4 (SLD+) - Body ground |
Always | 10 kΩ or higher |
|
R33-5 (SLD-) - R23-3 (SLD-) |
Always | Below 1 Ω |
|
R33-5 (SLD-) or R23-3 (SLD-) - Body ground |
Always | 10 kΩ or higher |
Front Vertical Motor |
Tester Connection | Condition |
Specified Condition |
|
R33-7 (FRV+) - R27-3 (FRV+) |
Always | Below 1 Ω |
|
R33-7 (FRV+) or R27-3 (FRV+) - Body ground |
Always | 10 kΩ or higher |
|
R30-4 (FRV-) - R27-1 (FRV-) |
Always | Below 1 Ω |
|
R30-4 (FRV-) or R27-1 (FRV-) - Body ground |
Always | 10 kΩ or higher |
Lifter Motor |
Tester Connection | Condition |
Specified Condition |
|
R33-6 (LFT+) - R29-3 (LFT+) |
Always | Below 1 Ω |
|
R33-6 (LFT+) or R29-3 (LFT+) - Body ground |
Always | 10 kΩ or higher |
|
R30-5 (LFT-) - R29-1 (LFT-) |
Always | Below 1 Ω |
|
R30-5 (LFT-) or R29-1 (LFT-) - Body ground |
Always | 10 kΩ or higher |
Reclining Motor |
Tester Connection | Condition |
Specified Condition |
|
R33-10 (RCL+) - a10-3 (RCL+) |
Always | Below 1 Ω |
|
R33-10 (RCL+) or a10-3 (RCL+) - Body ground |
Always | 10 kΩ or higher |
|
R30-6 (RCL-) - a10-1 (RCL-) |
Always | Below 1 Ω |
|
R30-6 (RCL-) or a10-1 (RCL-) - Body ground |
Always | 10 kΩ or higher |
Front Lumbar Support Motor |
Tester Connection | Condition |
Specified Condition |
|
R33-9 (L+) - a8-2 (L+) |
Always | Below 1 Ω |
|
R33-9 (L+) or a8-2 (L+) - Body ground |
Always | 10 kΩ or higher |
|
R30-3 (L-) - a8-1 (L-) |
Always | Below 1 Ω |
|
R30-3 (L-) or a8-1 (L-) - Body ground |
Always | 10 kΩ or higher |
|
R33-8 (LV+) - a9-2 (LV+) |
Always | Below 1 Ω |
|
R33-8 (LV+) or a9-2 (LV+) - Body ground |
Always | 10 kΩ or higher |
|
R30-1 (LV-) - a9-1 (LV-) |
Always | Below 1 Ω |
|
R30-1 (LV-) or a9-1 (LV-) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 10. |
INSPECT FRONT POWER SEAT SWITCH LH |
(a) Remove the front power seat switch LH.
Click here
(b) Inspect the front power seat switch LH.
Click here
| NG |
| REPLACE FRONT POWER SEAT SWITCH LH |
|
OK | |
| |
| 11. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT POWER SEAT SWITCH LH) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Ground |
Tester Connection | Condition |
Specified Condition |
|
R31-20 (E) - R33-2 (E) |
Always | Below 1 Ω |
|
R31-20 (E) or R33-2 (E) - Body ground |
Always | Below 1 Ω |
Slide Function |
Tester Connection | Condition |
Specified Condition |
|
R31-6 (SLDR) - R32-23 (SLDR) |
Always | Below 1 Ω |
|
R31-6 (SLDR) or R32-23 (SLDR) - Body ground |
Always | 10 kΩ or higher |
|
R31-7 (SLDF) - R32-9 (SLDF) |
Always | Below 1 Ω |
|
R31-7 (SLDF) or R32-9 (SLDF) - Body ground |
Always | 10 kΩ or higher |
Reclining Function |
Tester Connection | Condition |
Specified Condition |
|
R31-1 (RCLR) - R32-22 (RCLR) |
Always | Below 1 Ω |
|
R31-1 (RCLR) or R32-22 (RCLR) - Body ground |
Always | 10 kΩ or higher |
|
R31-2 (RCLF) - R32-8 (RCLF) |
Always | Below 1 Ω |
|
R31-2 (RCLF) or R32-8 (RCLF) - Body ground |
Always | 10 kΩ or higher |
Front Vertical Function |
Tester Connection | Condition |
Specified Condition |
|
R31-4 (FRVU) - R32-6 (FRVU) |
Always | Below 1 Ω |
|
R31-4 (FRVU) or R32-6 (FRVU) - Body ground |
Always | 10 kΩ or higher |
|
R31-5 (FRVD) - R32-20 (FRVD) |
Always | Below 1 Ω |
|
R31-5 (FRVD) or R32-20 (FRVD) - Body ground |
Always | 10 kΩ or higher |
Lifter Function |
Tester Connection | Condition |
Specified Condition |
|
R31-3 (LFTU) - R32-7 (LFTU) |
Always | Below 1 Ω |
|
R31-3 (LFTU) or R32-7 (LFTU) - Body ground |
Always | 10 kΩ or higher |
|
R31-8 (LFTD) - R32-21 (LFTD) |
Always | Below 1 Ω |
|
R31-8 (LFTD) or R32-21 (LFTD) - Body ground |
Always | 10 kΩ or higher |
Lumbar Support Adjustment Function |
Tester Connection | Condition |
Specified Condition |
|
R31-17 (R) - R32-18 (LFLR) |
Always | Below 1 Ω |
|
R31-17 (R) or R32-18 (LFLR) - Body ground |
Always | 10 kΩ or higher |
|
R31-14 (H) - R32-4 (LFLF) |
Always | Below 1 Ω |
|
R31-14 (H) or R32-4 (LFLF) - Body ground |
Always | 10 kΩ or higher |
|
R31-11 (LRU+) - R32-3 (LVU) |
Always | Below 1 Ω |
|
R31-11 (LRU+) or R32-3 (LVU) - Body ground |
Always | 10 kΩ or higher |
|
R31-9 (LRD+) - R32-17 (LVD) |
Always | Below 1 Ω |
|
R31-9 (LRD+) or R32-17 (LVD) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Operation Check
OPERATION CHECK
CHECK CUSTOMIZE PARAMETERS
NOTICE:
Confirm
that the customize setting Auto Operation Interference Avoidance
Function is set to off before checking the operation of the front power
seat.
Click here 
CHECK POWER SEAT FUNCTION
(a) Check the basic functions.
|
*a | Slide Function |
|
*b | Reclining Function |
|
*c | Lifter Function |
|
*d | Front Vertical Function |
|
*e | Lumbar Support Adjustment Function (forward - back) |
|
*f | Lumbar Support Adjustment Function (up - down) |
(1) Operate the power seat switches and check that the following seat functions operate properly:
- Slide function
- Reclining function
- Lifter function
- Front vertical function
- Lumbar support adjustment function
CHECK POWER SEAT MOTOR (SLIDE, FRONT VERTICAL, LIFTER AND RECLINING FUNCTIONS)
(a) Check the PTC operation inside the power seat motor.
NOTICE:
- The inspection should be performed with the seat installed to the vehicle.
- Perform the 4 steps below to check the full range of motion for each power seat function.
HINT:
The
resistance of the PTC thermistor increases when a switch of the front
power seat switch LH is held down even after the seat has been moved to
the farthest possible position in one direction. If the resistance
increases beyond a specified level, the current is shut off to prevent a
short circuit.
(1) Choose a power seat function.
Operate a switch of the front power seat switch LH and move the seat to
the farthest possible position in one direction. Keep the seat in that
position for approximately 60 seconds.
(2) Operate
the switch of the front power seat switch LH again and continue to try
to move the seat in the same direction as in the previous step. Measure
the time until the current is shut off (motor operation sound stops).
Standard:
4 to 90 seconds
(3) After the current is shut off, release the switch of the front power seat switch LH and wait for approximately 60 seconds.
(4)
Operate a switch of the front power seat switch LH and move the seat in
the opposite direction. Check that the motor operates.
CHECK FRONT LUMBAR SUPPORT MOTOR
(a) Check the PTC operation inside the front lumbar support motor (forward - back).
NOTICE:
The inspection should be performed with the seat installed to the vehicle.
(1)
Operate the front power seat switch LH and move the lumbar support to
either the foremost or rearmost position. Keep the seat in that position
for approximately 60 seconds.
(2) Operate the
front power seat switch LH again and continue to try to move the lumbar
support in the same direction as in the previous step. Measure the time
until the current is shut off (motor operation sound will stop).
Standard:
4 to 90 seconds
(3) After the current is shut off, release the front power seat switch LH and wait for approximately 60 seconds.
(4) Operate the front power seat switch LH and move the lumbar support in the opposite direction. Check that the motor operates.
(b) Check the PTC operation inside the front lumbar support motor (up - down).
NOTICE:
The inspection should be performed with the seat installed to the vehicle.
(1)
Operate the front power seat switch LH and move the lumbar support to
either the uppermost or lowermost position. Keep the seat in that
position for approximately 60 seconds.
(2) Operate
the front power seat switch LH again and continue to try to move the
lumbar support in the same direction as in the previous step. Measure
the time until the current is shut off (motor operation sound will
stop).
Standard:
4 to 90 seconds
(3) After the current is shut off, release the front power seat switch LH and wait for approximately 60 seconds.
(4) Operate the front power seat switch LH and move the lumbar support in the opposite direction. Check that the motor operates.
CHECK POWER SEAT POWER EASY ACCESS SYSTEM
HINT:
- When troubleshooting a function, first make sure that the function is set to the default setting.
Click here
- The power seat power easy access system may not operate and move the seat rearward if the seat is near the rearmost position.
(a) Move the driver seat to the foremost position using the front power seat switch LH.
(b) Perform either of the following and check that the driver seat moves rearward:
- With the engine switch off and the shift lever in P, unfasten the driver seat seat belt.
- With the shift lever in P and the driver seat seat belt unfastened, turn the engine switch off.
(c) Perform either of the following and check that the driver seat moves forward:
- With the shift lever in P, fasten the driver seat seat belt.
- With the shift lever in P, turn the engine switch from off to on (IG).
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION
HINT:
- The SET, M1 and M2 seat memory switches are shown in the illustration.
- The seat position will not be stored if the SET switch and 2 or more of
the seat memory switches (for example, M1 switch and M2 switch) are
pressed simultaneously.
If a memorizing operation has failed, release all of
the switches. The seat memory function will not operate unless the
switches are released.
- The seat will not return to the memorized position if 2 or more of the
seat memory switches (for example, M1 switch and M2 switch) are pressed
simultaneously.
If a restoring operation has failed, release all of the
switches. The seat memory restoring function will not operate unless
the switches are released.
(a) Turn the engine switch on (IG) and check that the P position indicator is illuminated.
|
*a | SET Switch |
|
*b | M1 Switch |
|
*c | M2 Switch |
(b) Move the seat to the foremost and uppermost positions using the front power seat switch LH.
(c)
Check that a buzzer sounds for 0.5 seconds and the seat position is
memorized when the M1 switch is pressed within 3 seconds of the SET
switch being pressed or the M1 switch is pressed while the SET switch is
being pressed.
(d) Move the seat out of the foremost and uppermost positions using the front power seat switch LH.
(e)
Check that the buzzer sounds for 0.5 seconds and the seat position is
memorized when the M2 switch is pressed within 3 seconds of the SET
switch being pressed or the M2 switch is pressed while the SET switch is
being pressed.
(f) Move the seat to the rearmost and lowermost positions using the front power seat switch LH.
(g)
Check that the buzzer sounds for 0.1 seconds and the seat automatically
moves into the foremost and uppermost positions (memorized positions)
when the M1 switch is pressed.
(h) Check that the
buzzer sounds for 0.1 seconds and the seat automatically moves out of
the foremost and uppermost positions (memorized positions) when the M2
switch is pressed.
(i) Turn the engine switch off
and open the driver door. Check that the buzzer sounds for 0.1 seconds
and the seat automatically moves to the memorized position by pressing
the M1 or M2 switch within 180 seconds after the engine switch is turned
off.
(j) Turn the engine switch off and close the
driver door. Check that the buzzer sounds for 0.1 seconds and the seat
automatically moves to the memorized position by pressing the M1 or M2
switch within 60 seconds after the engine switch is turned off.
CHECK MEMORY CALL FUNCTION
(a) Automatic memory call function
HINT:
When
the customize function "Seat Move Distance" is set to "Standard", the
seat slides backward to a position 50 mm (1.97 in) from the memorized
position.
Click here
(1)
Prepare 2 electrical key transmitter sub-assemblies and label them
electrical key transmitter sub-assembly A and electrical key transmitter
sub-assembly B.
NOTICE:
Prepare
2 electrical key transmitter sub-assemblies which have already been
registered to the vehicle and can be used to lock and unlock the doors
normally.
HINT:
- Refer to Registration for the electrical key transmitter sub-assembly registration procedure.
Click here
- Use tags to identify each electrical key transmitter sub-assembly.
(2) Register a seat position to the seat memory switch (M1) and the electrical key transmitter sub-assembly A.
HINT:
Refer to Memory Call Registration.
Click here
(3)
While carrying the electrical key transmitter sub-assembly A, unlock
the driver door using the entry unlock function or wireless unlock
operation. Open the driver door and check that a buzzer sounds for 0.1
seconds and the driver seat moves to the memorized position.
(4) Register a seat position to the seat memory switch (M2) and the electrical key transmitter sub-assembly B.
HINT:
Refer to Memory Call Registration.
Click here
(5)
While carrying the electrical key transmitter sub-assembly B, unlock
the driver door using the entry unlock function or wireless unlock
operation. Open the driver door and check that a buzzer sounds for 0.1
seconds and the driver seat moves to the memorized position.
CHECK MEMORY CALL EMERGENCY STOP FUNCTION
(a)
While a memory call function is operating, check that performing one of
the following will stop the memory call operation: 1) press the SET
switch, M1 switch or M2 switch or 2) press the front power seat switch.
Parts Location
PARTS LOCATION
ILLUSTRATION
|
*1 | FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER DOOR) |
*2 | SEAT MEMORY SWITCH |
|
*3 | MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
- DOOR CONTROL SWITCH |
*4 | MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
*5 | INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- DOOR F/L FUSE - P/SEAT F/L FUSE - ECU-DCC NO. 2 FUSE
- ECU-IG1 NO. 4 FUSE |
*6 | OUTER MIRROR CONTROL ECU ASSEMBLY LH |
|
*7 | CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
*8 | DLC3 |
|
*9 | ECM |
- | - |
ILLUSTRATION
|
*1 | SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH |
*2 | FRONT SEATBACK FRAME SUB-ASSEMBLY LH |
|
*3 | LUMBAR SUPPORT ADJUSTER ASSEMBLY LH |
*4 | FRONT POWER SEAT SWITCH LH |
|
*5 | LIFTER MOTOR |
*6 | FRONT VERTICAL MOTOR |
|
*7 | RECLINING MOTOR |
*8 | SLIDE MOTOR |
|
*9 | POSITION CONTROL ECU ASSEMBLY |
*10 | FRONT SEAT INNER BELT ASSEMBLY LH |
Power Seat does not Return to Memorized Position
DESCRIPTION
When the M1 or
M2 switch of the seat memory switch is pressed, the outer mirror control
ECU assembly sends a switch signal to the main body ECU (multiplex
network body ECU) via CAN communication. Then, the main body ECU
(multiplex network body ECU) sends a recall request signal to the
position control ECU assembly. The position control ECU assembly
operates each motor to move the seat to the memorized position.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The seat position will not be stored if the SET switch and 2 or more of
the seat memory switches (for example, M1 switch and M2 switch) are
pressed simultaneously.
If a memorizing operation has failed, release all of
the switches. The seat memory function will not operate unless the
switches are released.
- The seat will not return to the memorized position if 2 or more of the
seat memory switches (for example, M1 switch and M2 switch) are pressed
simultaneously.
If a restoring operation has failed, release all of the
switches. The seat memory restoring function will not operate unless
the switches are released.
- The front power seat control system (w/ Memory) uses the CAN
communication system. First, confirm that there are no malfunctions in
the CAN communication system. Refer to How to Proceed with
Troubleshooting.
Click here 
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
PROCEDURE
|
1. | CHECK FRONT POWER SEAT CONTROL OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here
OK:
Each function of the power seat operates normally using the front power seat switch LH.
| NG |
 | GO TO PROBLEM SYMPTOMS TABLE |
|
OK |
 | |
| 2. |
CHECK SEAT POSITION MEMORY FUNCTION |
(a) Check the seat position memory function.
Click here
OK:
Seat position memory function is normal.
| NG |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized) |
|
OK | |
| |
| 3. |
CHECK SEAT POSITION RESTORING FUNCTION |
(a)
Under each of the following conditions, check that the seat position
restoring function operates by pressing the M1 or M2 switch.
Click here
- The engine switch is on (IG), and the shift lever is in P.*1
- Within 180 seconds after the driver door is opened with the engine switch off.*2
- Within 60 seconds after the driver door is opened and then closed with the engine switch off.*3
|
Result | Proceed to |
|
Seat position restoring function does not operate at all. |
A |
| Seat position restoring function does not operate when the condition is *1. |
B |
- Seat position restoring function does not operate when the condition is *2.
- Seat position restoring function does not operate when the condition is *3.
| C |
| B |
| GO TO STEP 7 |
| C |
| GO TO STEP 10 |
|
A | |
| |
| 4. |
READ VALUE USING TECHSTREAM (SEAT POSITION MEMORY) |
(a) Store a seat position in memory for the M1 and M2 switches.
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Driver Seat / Data List.
(f) Read the Data List according to the display on the Techstream.
Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Seat Memory No1 | Seat position memorized with M1 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
| Seat Memory No2 |
Seat position memorized with M2 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
Body Electrical > Driver Seat > Data List
|
Tester Display |
| Seat Memory No1 |
|
Seat Memory No2 |
OK:
Mem is displayed on the Techstream screen.
| NG |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized) |
|
OK | |
| |
| 5. |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
(a) Replace the outer mirror control ECU assembly LH with a new or known good one.
Click here
|
NEXT | |
| |
| 6. |
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION |
(a) Check the seat position memory and restoring functions.
Click here
OK:
Seat position memory and restoring functions operate normally.
| OK |
| END (OUTER MIRROR CONTROL ECU ASSEMBLY LH WAS DEFECTIVE) |
| NG |
| GO TO STEP 8 |
| 7. |
READ VALUE USING TECHSTREAM (SHIFT P POSITION STATE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List.
(e) Read the Data List according to the display on the Techstream.
Powertrain > Engine > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Shift SW Status (P Range) |
Park/neutral position switch status |
ON or OFF | ON: Shift lever in P
OFF: Shift lever not in P |
- |
Powertrain > Engine > Data List
|
Tester Display |
| Shift SW Status (P Range) |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO AUTOMATIC TRANSAXLE SYSTEM (P070513) |
|
OK | |
| |
| 8. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 9. |
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION |
(a) Check the seat position memory and restoring functions.
Click here
OK:
Seat position memory and restoring functions operate normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 10. |
READ VALUE USING TECHSTREAM (DRIVER DOOR COURTESY SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
FL Door Courtesy SW | Front door courtesy light switch assembly (driver door) signal |
ON or OFF | ON: Driver door open
OFF: Driver door closed |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
| FL Door Courtesy SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| GO TO LIGHTING SYSTEM (Front Door Courtesy Switch Circuit) |
Power Seat Position is not Memorized
DESCRIPTION
The main body
ECU (multiplex network body ECU) receives seat memory switch signals
from the outer mirror control ECU assembly LH via CAN communication. If
the SET switch is being pressed when one of the M1 or M2 switches is
pressed, or if one of the M1 or M2 switches is pressed within 3 seconds
of pressing the SET switch, the main body ECU (multiplex network body
ECU) sends a memory request signal to the position control ECU assembly.
After receiving the request signal, the position control ECU assembly
memorizes the location data of each motor.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The seat position will not be stored if the SET switch and 2 or more of
the seat memory switches (for example, M1 switch and M2 switch) are
pressed simultaneously.
If a memorizing operation has failed, release all of
the switches. The seat memory function will not operate unless the
switches are released.
- The seat will not return to the memorized position if 2 or more of the
seat memory switches (for example, M1 switch and M2 switch) are pressed
simultaneously.
If a restoring operation has failed, release all of the
switches. The seat memory restoring function will not operate unless
the switches are released.
- The front power seat control system (w/ Memory) uses the CAN
communication system. First, confirm that there are no malfunctions in
the CAN communication system. Refer to How to Proceed with
Troubleshooting.
Click here 
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
PROCEDURE
|
1. | CHECK FRONT POWER SEAT CONTROL OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here
OK:
Each function of the power seat operates normally using the front power seat switch LH.
| NG |
 | GO TO PROBLEM SYMPTOMS TABLE |
|
OK |
 | |
| 2. |
READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Mirror L / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Mirror L > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Seat Memory Switch1 | M1 switch |
ON or OFF | ON: M1 switch on
OFF: M1 switch off | - |
|
Seat Memory Switch2 | M2 switch |
ON or OFF | ON: M2 switch on
OFF: M2 switch off | - |
|
Seat Memory Set SW | SET switch |
ON or OFF | ON: SET switch on
OFF: SET switch off | - |
Body Electrical > Mirror L > Data List
|
Tester Display |
| Seat Memory Switch1 |
|
Seat Memory Switch2 |
|
Seat Memory Set SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO STEP 8 |
|
OK | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (BUZZER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Driver Seat > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|
Buzzer | Buzzer operation |
OFF/ON | - |
Body Electrical > Driver Seat > Active Test
OK:
Buzzer sounds normally.
| NG |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
|
OK | |
| |
| 4. |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
(a) Replace the outer mirror control ECU assembly LH with a new or known good one.
Click here
|
NEXT | |
| |
| 5. |
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION |
(a) Check the seat position memory and restoring functions.
Click here
OK:
Seat position memory and restoring functions operate normally.
| OK |
| END (OUTER MIRROR CONTROL ECU ASSEMBLY LH WAS DEFECTIVE) |
|
NG | |
| |
| 6. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 7. |
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION |
(a) Check the seat position memory and restoring functions.
Click here
OK:
Seat position memory and restoring functions operate normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 8. |
INSPECT SEAT MEMORY SWITCH |
(a) Remove the seat memory switch.
Click here
(b) Inspect the seat memory switch.
Click here
| NG |
| REPLACE SEAT MEMORY SWITCH |
|
OK | |
| |
| 9. |
CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - SEAT MEMORY SWITCH - BODY GROUND) |
(a) Disconnect the I21 outer mirror control ECU assembly LH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
I21-1 (MM) - I17-5 (MMRY) |
Always | Below 1 Ω |
|
I21-1 (MM) or I17-5 (MMRY) - Body ground |
Always | 10 kΩ or higher |
|
I21-2 (M1) - I17-4 (1) |
Always | Below 1 Ω |
|
I21-2 (M1) or I17-4 (1) - Body ground |
Always | 10 kΩ or higher |
|
I21-3 (M2) - I17-3 (2) |
Always | Below 1 Ω |
|
I21-3 (M2) or I17-3 (2) - Body ground |
Always | 10 kΩ or higher |
|
I21-7 (GND) - Body ground |
Always | Below 1 Ω |
|
I17-1 (E) - Body ground |
Always | Below 1 Ω |
| OK |
| REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Power Seat Power Easy Access System Function does not Operate
DESCRIPTION
- Perform either of the following and check that the driver seat moves rearward:
- With the engine switch off and the shift lever in P, unfasten the driver seat seat belt.
- With the shift lever in P and the driver seat seat belt unfastened, turn the engine switch off.
- Perform either of the following and check that the driver seat moves forward:
- With the shift lever in P, fasten the driver seat seat belt.
- With the shift lever in P, turn the engine switch from off to on (IG).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The front power seat control system uses the CAN communication system.
First, confirm that there is no malfunction in the CAN communication
system. Refer to the How to Proceed with Troubleshooting procedure.
Click here 
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
HINT:
When troubleshooting a function, first make sure that the function is set to the default setting.
Click here
PROCEDURE
| 1. |
CHECK FRONT POWER SEAT OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here
|
Result | Proceed to |
|
Power seat functions operate normally |
A |
| All power seat functions do not operate |
B |
| One or more power seat motors do not operate |
C |
| B |
 | GO TO OTHER FLOW CHART (Front Power Seat does not Operate with Front Power Seat Switch) |
| C |
| GO TO OTHER FLOW CHART (One or more Power Seat Motors do not Operate) |
|
A |
 | |
| 2. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Driver Seat / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Driver Seat Buckle SW | Driver seat belt buckle switch |
ON or OFF | ON: Driver seat belt fastened
OFF: Driver seat belt unfastened |
- |
Body Electrical > Driver Seat > Data List
|
Tester Display |
| Driver Seat Buckle SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO STEP 5 |
|
OK | |
| |
| 3. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Temporarily replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 4. |
CHECK POWER SEAT POWER EASY ACCESS SYSTEM |
(a) Check the power seat power easy access system.
Click here
OK:
Power seat power easy access system is normal.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 5. |
INSPECT FRONT SEAT INNER BELT ASSEMBLY LH |
(a) Remove the front seat inner belt assembly LH.
Click here
(b) Inspect the front seat inner belt assembly LH.
Click here
| NG |
| REPLACE FRONT SEAT INNER BELT ASSEMBLY LH |
|
OK | |
| |
| 6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT INNER BELT ASSEMBLY LH - BODY GROUND) |
(a) Disconnect the R32 position control ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
R32-27 (DBCL) - K54-5 (RDC) |
Always | Below 1 Ω |
|
R32-27 (DBCL) or K54-5 (RDC) - Body ground |
Always | 10 kΩ or higher |
|
K54-6 (E) - Body ground |
Always | Below 1 Ω |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
Precaution
PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When
disconnecting the cable from the negative (-) battery terminal,
initialize the following systems after the cable is reconnected.
|
System Name | See Procedure |
|
Lane Departure Alert System (w/ Steering Control) |
 |
|
Intelligent Clearance Sonar System |
|
Parking Assist Monitor System |
|
Panoramic View Monitor System |
|
Pre-collision System |
|
Lighting System (for Gasoline Model with Cornering Light) |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If
multiple suspected areas are listed, the potential causes of the
symptoms are listed in order of probability in the "Suspected Area"
column of the table. Check each symptom by checking the suspected areas
in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Front Power Seat Control System (w/ Memory) |
Symptom | Suspected Area |
Link |
| Front power seat does not operate with front power seat switch |
Refer to the "Front Power Seat does not Operate with Front Power Seat Switch". |
 |
|
One or more power seat motors do not operate |
Refer to the "One or more Power Seat Motors do not Operate". |
|
|
Power seat position is not memorized |
Refer to the "Power Seat Position is not Memorized". |
|
|
Power seat does not return to memorized position |
Refer to the "Power Seat does not Return to Memorized Position". |
|
|
Wireless transmitter memory function does not operate |
Refer to the "Wireless Transmitter Memory Function does not Operate". |
|
|
Wireless-linked return function does not operate |
Refer to the "Wireless-linked Return Function does not Operate". |
|
|
Power seat power easy access system function does not operate |
Refer to the "Power Seat Power Easy Access System Function does not Operate". |
|
Registration
REGISTRATION
PROCEDURE
1. MEMORY CALL REGISTRATION
(a) Memory registration
NOTICE:
- Do not bring 2 or more electrical key transmitter sub-assemblies into the cabin.
- Do not press and hold the door control switch on the multiplex network master switch assembly for 3 seconds or more.
(1) Register the seat position to a seat memory switch (M1 or M2 switch) in advance.
(2)
Sit on the driver seat carrying only the electrical key transmitter
sub-assembly to which a seat position is to be registered.
(3) With the engine switch on (IG) and the shift lever in P, restore the seat to the memorized position to be registered.
(4)
With the engine switch on (IG), the shift lever in P, the driver door
closed and a seat memory switch (M1 or M2 switch) being pressed and
held, press and hold the door control switch on the multiplex network
master switch assembly until the buzzer answer-back function operates.
HINT:
- The door control switch on the multiplex network master switch assembly can be pressed to either the lock or unlock side.
- The buzzer will sound for 0.5 seconds when the registration is complete.
- The buzzer will sound for 3 seconds if the registration fails.
(b) Memory deletion
NOTICE:
- Do not bring 2 or more electrical key transmitter sub-assemblies into the cabin.
- Do not press and hold the door control switch on the multiplex network master switch assembly for 3 seconds or more.
(1) Sit on the driver seat carrying
only the electrical key transmitter sub-assembly from which the seat
position is to be deleted.
(2) With the engine switch
on (IG), the shift lever in P, the driver door closed and the SET seat
memory switch being pressed and held, press and hold the door control
switch on the multiplex network master switch assembly until the
answer-back by the buzzer is confirmed.
HINT:
- The door control switch on the multiplex network master switch assembly can be pressed to either the lock or unlock side.
- The buzzer will sound for 0.5 seconds when the memory deletion is complete.
- The buzzer will sound for 3 seconds if the memory deletion fails.
2. POSITION CONTROL ECU ASSEMBLY INITIALIZATION
NOTICE:
Initializing the position control ECU assembly will clear the seat position memory.
HINT:
- Make sure to initialize the position control ECU assembly after replacing the seat assembly or any related parts.
- Before initializing the position control ECU assembly, make sure that the D/C CUT fuse is normal.
- When any of the following conditions are met, the seat position
information in the position control ECU assembly will be cleared.
- The engine switch is turned off with any of the seat switches being operated and the D/C CUT fuse removed.
- The engine switch is turned off within 1 second of any of the seat switches being operated with the D/C CUT fuse removed.
- Power supplied to the position control ECU assembly is cut while the seat is moving to the memorized position.
(a) Turn the engine switch on (IG).
(b) Operate the slide and vertical power seat switch knob to tilt the front of the power seat downward 3 times.
(c)
Within 10 seconds of operating the slide and vertical power seat switch
knob, simultaneously operate and hold the reclining power seat switch
knob and slide and vertical power seat switch knob to recline and move
the power seat upward until a buzzer sounds.
(d)
Operate and hold the slide power seat switch knob to move the power seat
to the foremost position. Continue holding the switch for 1 second
after the seat has stopped.
(e) Operate and hold the
reclining power seat switch knob to move the seatback to the foremost
position. Continue holding the switch for 1 second after the seatback
has stopped.
(f) Operate and hold the lifter power
seat switch knob to move the power seat to the lowermost position.
Continue holding the switch for 1 second after the seat has stopped.
(g)
Operate and hold the vertical power seat switch knob to move the seat
cushion to the lowermost position. Continue holding the switch for 1
second after the seat cushion has stopped.
System Description
SYSTEM DESCRIPTION
FRONT POWER SEAT CONTROL SYSTEM DESCRIPTION
- The driver seat is equipped with slide, reclining, lifter, front vertical and lumbar support adjustment functions.
- The memory call function uses the key ID code of each electrical key
transmitter sub-assembly to memorize and recall the appropriate driving
position for each individual who possesses a master key or sub key.
FUNCTION OF MAIN COMPONENT
|
Component | Function |
|
Position control ECU assembly | Receives
position signals from the position sensors. Outputs seat adjuster
signals to the separate type front seat cushion spring assembly LH,
front seatback frame sub-assembly LH or lumbar support adjuster assembly
LH to adjust the seat accordingly. |
|
Separate type front seat cushion spring assembly LH |
Slide motor | Receives signals from the position control ECU assembly, and slides the seat forward and rearward. |
|
Front vertical motor | Receives signals from the position control ECU assembly, and raises and lowers the front of the seat cushion. |
|
Lifter motor | Receives signals from the position control ECU assembly, and raises and lowers the seat cushion. |
|
Front seatback frame sub-assembly LH |
Reclining motor | Receives signals from the position control ECU assembly, and tilts the seatback forward and rearward. |
|
Position sensor | Built into each motor and send position signals to the position control ECU assembly to detect the position of the seat. |
|
Lumbar support adjuster assembly LH |
Receives signals from the position control ECU assembly and operates the built-in motor to adjust the lumbar support. |
|
Seat memory switch | If
the SET switch is being pressed when one of the M1 or M2 seat memory
switches is pressed, or if one of the M1 or M2 switches is pressed
within 3 seconds of pressing the SET switch, the outer mirror control
ECU assembly LH sends the signals so that the seat position can be
stored. Then, when a seat memory switch is pressed, a
signal is sent to the outer mirror control ECU assembly LH and the seat
position changes according to memory. |
SYSTEM OPERATION
The front power seat functions which can be operated by the power seat motors and memorized are shown below.
|
Seat Function | Driver Seat |
|
Slide | Power and Memory |
|
Reclining | Power and Memory |
|
Front Vertical | Power and Memory |
|
Lifter | Power and Memory |
|
Lumbar Support Adjustment |
Power |
The
seat memory switch sends memory switch information to the outer mirror
control ECU assembly LH. Then the information is sent to the main body
ECU (multiplex network body ECU) via CAN communication and then an
instruction to memorize the seat position is sent to the position
control ECU assembly via CAN communication. As a result, the seat
position is memorized.
System Diagram
SYSTEM DIAGRAM
Communication Table |
Sender | Receiver |
Signal | Line |
|
ECM | Main Body ECU (Multiplex Network Body ECU) |
Shift position P signal |
CAN |
| Outer Mirror Control ECU Assembly LH |
Main Body ECU (Multiplex Network Body ECU) |
- M1 switch signal
- M2 switch signal
- SET switch signal
| CAN |
|
Main Body ECU (Multiplex Network Body ECU) |
Position Control ECU Assembly |
- Shift position P signal
- Transmission information
- Driving position buzzer request
- Driver seat position request
- Driver seat position data
| CAN |
|
Certification ECU (Smart Key ECU Assembly) |
Main Body ECU (Multiplex Network Body ECU) |
- Engine switch signal
- Memory call replay request
- Key identification No. 1 to No. 7 acquisition condition
| CAN |
|
Position Control ECU Assembly | Main Body ECU (Multiplex Network Body ECU) |
- State signal of driver seat
- State signal of driving position buzzer
| CAN |
|
Multiplex Network Master Switch Assembly |
Main Body ECU (Multiplex Network Body ECU) |
Door control switch signal |
LIN |
Terminals Of Ecu
TERMINALS OF ECU
CHECK POSITION CONTROL ECU ASSEMBLY
(a) Disconnect the R33 and R32 position control ECU assembly connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
R33-3 (B) - Body ground |
W - Body ground | Battery power supply |
Always | 11 to 14 V |
|
R32-1 (IG) - Body ground |
LG - Body ground |
Ignition power supply |
Engine switch off | Below 1 V |
|
Engine switch on (IG) |
11 to 14 V |
|
R32-15 (SYSB) - Body ground |
W - Body ground | System power source |
Always | 11 to 14 V |
|
R33-2 (E) - Body ground |
W-B - Body ground | Ground |
Always | Below 1 Ω |
|
R32-27 (DBCL) - Body ground |
P-W - Body ground |
Driver seat belt buckle switch signal |
Driver seat belt unfastened |
10 kΩ or higher |
|
Driver seat belt fastened |
Below 1 Ω |
(c) Reconnect the R33 and R32 position control ECU assembly connectors.
(d) Measure the voltage and resistance according to the value(s) in the table below.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
R33-1 (SLD+) - Body ground |
L - Body ground |
Slide motor signal (forward) |
Slide switch off | Below 1 V |
|
Slide switch on (Forward) |
11 to 14 V |
|
R33-5 (SLD-) - Body ground |
GR - Body ground |
Slide motor signal (rearward) |
Slide switch off | Below 1 V |
|
Slide switch on (Rearward) |
11 to 14 V |
|
R33-6 (LFT+) - Body ground |
G - Body ground |
Lifter motor signal (upward) |
Lifter switch off | Below 1 V |
|
Lifter switch on (Upward) |
11 to 14 V |
|
R30-5 (LFT-) - Body ground |
BR - Body ground |
Lifter motor signal (downward) |
Lifter switch off | Below 1 V |
|
Lifter switch on (Downward) |
11 to 14 V |
|
R33-10 (RCL+) - Body ground |
LG - Body ground |
Reclining motor signal (forward) |
Reclining switch off |
Below 1 V |
|
Reclining switch on (Forward) |
11 to 14 V |
|
R30-6 (RCL-) - Body ground |
P - Body ground |
Reclining motor signal (rearward) |
Reclining switch off |
Below 1 V |
|
Reclining switch on (Rearward) |
11 to 14 V |
|
R33-7 (FRV+) - Body ground |
B - Body ground |
Front vertical motor signal (upward) |
Front vertical switch off |
Below 1 V |
|
Front vertical switch on (Upward) |
11 to 14 V |
|
R30-4 (FRV-) - Body ground |
R - Body ground |
Front vertical motor signal (downward) |
Front vertical switch off |
Below 1 V |
|
Front vertical switch on (Downward) |
11 to 14 V |
|
R33-9 (L+) - Body ground |
Y - Body ground |
Lumbar support adjuster motor signal (forward) |
Lumbar support adjuster switch off |
Below 1 V |
|
Lumbar support adjuster switch on (Forward) |
11 to 14 V |
|
R30-3 (L-) - Body ground |
V - Body ground |
Lumbar support adjuster motor signal (rearward) |
Lumbar support adjuster switch off |
Below 1 V |
|
Lumbar support adjuster switch on (Rearward) |
11 to 14 V |
|
R33-8 (LV+) - Body ground |
O - Body ground |
Lumbar support adjuster motor signal (upward) |
Lumbar support adjuster switch off |
Below 1 V |
|
Lumbar support adjuster switch on (Upward) |
11 to 14 V |
|
R30-1 (LV-) - Body ground |
GR-W - Body ground |
Lumbar support adjuster motor signal (downward) |
Lumbar support adjuster switch off |
Below 1 V |
|
Lumbar support adjuster switch on (Downward) |
11 to 14 V |
|
R32-4 (LFLF) - Body ground |
Y-B - Body ground |
Front power seat switch LH (lumbar support adjuster switch (forward)) signal |
Lumbar support adjuster switch off |
11 to 14 V |
|
Lumbar support adjuster switch on (Forward) |
Below 1 V |
|
R32-18 (LFLR) - Body ground |
V-B - Body ground |
Front power seat switch LH (lumbar support adjuster switch (rearward)) signal |
Lumbar support adjuster switch off |
11 to 14 V |
|
Lumbar support adjuster switch on (Rearward) |
Below 1 Ω |
|
R32-9 (SLDF) - Body ground |
L-B - Body ground |
Front power seat switch LH (slide switch (forward)) signal |
Slide switch off | 11 to 14 V |
|
Slide switch on (Forward) |
Below 1 V |
|
R32-23 (SLDR) - Body ground |
GR-B - Body ground |
Front power seat switch LH (slide switch (rearward)) signal |
Slide switch off | 11 to 14 V |
|
Slide switch on (Rearward) |
Below 1 V |
|
R32-8 (RCLF) - Body ground |
LG-B - Body ground |
Front power seat switch LH (reclining switch (forward)) signal |
Reclining switch off |
11 to 14 V |
|
Reclining switch on (Forward) |
Below 1 V |
|
R32-22 (RCLR) - Body ground |
P-B - Body ground |
Front power seat switch LH (reclining switch (rearward)) signal |
Reclining switch off |
11 to 14 V |
|
Reclining switch on (Rearward) |
Below 1 V |
|
R32-3 (LVU) - Body ground |
O-B - Body ground |
Front power seat switch LH (lumbar support adjuster switch (upward)) signal |
Lumbar support adjuster switch off |
11 to 14 V |
|
Lumbar support adjuster switch on (Upward) |
Below 1 V |
|
R32-17 (LVD) - Body ground |
GR-W - Body ground |
Front power seat switch LH (lumbar support adjuster switch (downward)) signal |
Lumbar support adjuster switch off |
11 to 14 V |
|
Lumbar support adjuster switch on (Downward) |
Below 1 V |
|
R32-6 (FRVU) - Body ground |
B - Body ground |
Front power seat switch LH (front vertical switch (upward)) signal |
Front vertical switch off |
11 to 14 V |
|
Front vertical switch on (Upward) |
Below 1 V |
|
R32-20 (FRVD) - Body ground |
R-B - Body ground |
Front power seat switch LH (front vertical switch (downward)) signal |
Front vertical switch off |
11 to 14 V |
|
Front vertical switch on (Downward) |
Below 1 V |
|
R32-7 (LFTU) - Body ground |
G-B - Body ground |
Front power seat switch LH (lifter switch (upward)) signal |
Lifter switch off | 11 to 14 V |
|
Lifter switch on (Upward) |
Below 1 V |
|
R32-21 (LFTD) - Body ground |
BR-B - Body ground |
Front power seat switch LH (lifter switch (downward)) signal |
Lifter switch off | 11 to 14 V |
|
Lifter switch on (Downward) |
Below 1 V |
|
R32-12 (SENG) - Body ground |
BR - Body ground | Sensor ground |
Always | Below 1 Ω |
(e) Check for pulses according to the value(s) in the table below.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
R32-10 (SSFV) - Body ground |
R - Body ground | Front vertical position signal |
Front vertical function operating |
4.8 to 5.1 V |
|
R32-11 (SSRR) - Body ground |
O - Body ground | Reclining position signal |
Reclining function operating |
4.8 to 5.1 V |
|
R32-25 (SSRL) - Body ground |
P - Body ground | Lifter position signal |
Lifter function operating |
4.8 to 5.1 V |
|
R32-26 (SSRS) - Body ground |
G - Body ground | Slide position signal |
Slide function operating |
4.8 to 5.1 V |
CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH
(a) Disconnect the I21 outer mirror control ECU assembly LH connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
I21-6 (CPUB) - I21-7 (GND) |
LA-L - W-B | Battery power supply |
Always | 11 to 14 V |
|
I21-14 (BDR) - I21-7 (GND) |
GR - W-B | Battery power supply |
Always | 11 to 14 V |
|
I21-5 (SIG) - I21-7 (GND) |
LA-B - W-B | Ignition power supply |
Engine switch on (IG) |
11 to 14 V |
| I21-5 (SIG) - I21-7 (GND) |
LA-B - W-B | Ignition power supply |
Always | Below 1 V |
|
I21-7 (GND) - Body ground |
W-B - Body ground | Ground |
Always | Below 1 Ω |
(c) Reconnect the I21 outer mirror control ECU assembly LH connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
I21-1 (MM) - I21-7 (GND) |
GR - W-B |
SET switch signal for seat memory switch |
SET switch on | Below 1 V |
|
SET switch off | 11 to 14 V |
|
I21-2 (M1) - I21-7 (GND) |
BR - W-B |
M1 switch signal for seat memory switch |
M1 switch on | Below 1 V |
|
M1 switch off | 11 to 14 V |
|
I21-3 (M2) - I21-7 (GND) |
R - W-B | M2 switch signal for seat memory switch |
M2 switch on | Below 1 V |
|
M2 switch off | 11 to 14 V |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here 
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
|
Tester Connection | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|
MB-31 (BECU) - Body ground |
- | Battery power supply |
Always | 11 to 14 V |
|
MB-32 (IG) - Body ground |
- | Ignition power supply |
Engine switch on (IG) |
11 to 14 V |
|
MB-32 (IG) - Body ground |
- | Ignition power supply |
Engine switch off | Below 1 V |
|
MB-30 (ACC) - Body ground |
- | Ignition power supply |
Engine switch on (ACC) |
11 to 14 V |
|
MB-30 (ACC) - Body ground |
- | Ignition power supply |
Engine switch off | Below 1 V |
|
MB-11 (GND1) - Body ground |
- | Ground |
Always | Below 1 Ω |
|
G33-1 (FLCY) - Body ground |
W - Body ground | Front door courtesy light switch assembly (driver door) input |
Front door LH closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
Wireless Transmitter Memory Function does not Operate
DESCRIPTION
With the engine
switch on (IG) and the driver door closed, pressing the manual lock or
unlock switch on the multiplex network master switch assembly while
holding a seat memory switch (M1 or M2 switch) will register the
transmitter recognition code into the seat memory switch that was
pressed. After registration is completed, the answer back buzzer sounds.
CAUTION / NOTICE / HINT
NOTICE:
- The seat position will not be stored if the SET switch and 2 or more of
the seat memory switches (for example, M1 switch and M2 switch) are
pressed simultaneously.
If a memorizing operation has failed, release all of
the switches. The seat memory function will not operate unless the
switches are released.
- The seat will not return to the memorized position if 2 or more of the
seat memory switches (for example, M1 switch and M2 switch) are pressed
simultaneously.
If a restoring operation has failed, release all of the
switches. The seat memory restoring function will not operate unless
the switches are released.
- The front power seat control system (w/ Memory) uses the CAN
communication system. First, confirm that there are no malfunctions in
the CAN communication system. Refer to How to Proceed with
Troubleshooting.
Click here 
- Before replacing the main body ECU (multiplex network body ECU) or
certification ECU (smart key ECU assembly), refer to Registration.
Click here
PROCEDURE
|
1. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check the manual lock/unlock function by using the door control switch (multiplex network master switch assembly).
Click here
OK:
Manual lock/unlock function operates normally.
| NG |
 | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
OK |
 | |
| 2. |
CHECK SMART KEY SYSTEM (for Start Function) |
(a)
Check that the engine starts normally when the engine switch is pressed
while carrying the electrical key transmitter sub-assembly and with the
brake pedal depressed.
OK:
Engine starts normally.
| NG |
| GO TO SMART KEY SYSTEM (for Start Function) |
|
OK | |
| |
| 3. |
CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION |
(a) Check the seat position memory and restoring functions.
Click here
|
Result | Proceed to |
|
OK | A |
|
NG (Seat position memory function does not operate normally) |
B |
| NG (Seat position restoring function does not operate normally) |
C |
| B |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized) |
| C |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position) |
|
A | |
| |
| 4. |
READ VALUE USING TECHSTREAM (DRIVER DOOR COURTESY SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
FL Door Courtesy SW | Front door courtesy light switch assembly (driver door) signal |
ON or OFF | ON: Driver door open
OFF: Driver door closed |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
| FL Door Courtesy SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO LIGHTING SYSTEM (Door Courtesy Switch Circuit) |
|
OK | |
| |
| 5. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION) |
(a) Check the memory registration of the memory call function.
Click here
OK:
A seat position can be registered normally.
| NG |
| GO TO STEP 8 |
|
OK | |
| |
| 6. |
READ VALUE USING TECHSTREAM (MEMORY CALL REGISTRATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Mem SW No. w/KeyID1 | Memory switch linked with key ID1 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID1 MEM SW1: M1 switch linked with key ID1
MEM SW2: M2 switch linked with key ID1 MEM SW3: M3 switch linked with key ID1* |
- |
| Mem SW No. w/KeyID2 |
Memory switch linked with key ID2 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID2 MEM SW1: M1 switch linked with key ID2
MEM SW2: M2 switch linked with key ID2 MEM SW3: M3 switch linked with key ID2* |
- |
| Mem SW No. w/KeyID3 |
Memory switch linked with key ID3 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID3 MEM SW1: M1 switch linked with key ID3
MEM SW2: M2 switch linked with key ID3 MEM SW3: M3 switch linked with key ID3* |
- |
| Mem SW No. w/KeyID4 |
Memory switch linked with key ID4 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID4 MEM SW1: M1 switch linked with key ID4
MEM SW2: M2 switch linked with key ID4 MEM SW3: M3 switch linked with key ID4* |
- |
| Mem SW No. w/KeyID5 |
Memory switch linked with key ID5 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID5 MEM SW1: M1 switch linked with key ID5
MEM SW2: M2 switch linked with key ID5 MEM SW3: M3 switch linked with key ID5* |
- |
| Mem SW No. w/KeyID6 |
Memory switch linked with key ID6 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID6 MEM SW1: M1 switch linked with key ID6
MEM SW2: M2 switch linked with key ID6 MEM SW3: M3 switch linked with key ID6* |
- |
| Mem SW No. w/KeyID7 |
Memory switch linked with key ID7 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID7 MEM SW1: M1 switch linked with key ID7
MEM SW2: M2 switch linked with key ID7 MEM SW3: M3 switch linked with key ID7* |
- |
- *: Although this item is displayed on the Techstream, it is not applicable to this vehicle.
Body Electrical > Main Body > Data List
|
Tester Display |
| Mem SW No. w/KeyID1 |
|
Mem SW No. w/KeyID2 |
|
Mem SW No. w/KeyID3 |
|
Mem SW No. w/KeyID4 |
|
Mem SW No. w/KeyID5 |
|
Mem SW No. w/KeyID6 |
|
Mem SW No. w/KeyID7 |
OK:
A seat position memory switch is linked to the electrical key transmitter sub-assembly.
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
OK | |
| |
| 7. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
A seat position can be registered and the automatic memory call function operates normally.
| OK |
| USE SIMULATION METHOD TO CHECK |
| NG |
| GO TO OTHER DIAGNOSIS PROCEDURE (Wireless-linked Return Function does not Operate) |
| 8. |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Replace the main body ECU (multiplex network body ECU) with a new or known good one.
Click here
|
NEXT | |
| |
| 9. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION) |
(a) Check the memory registration of the memory call function.
Click here
OK:
A seat position can be registered normally.
| OK |
| END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
|
NG | |
| |
| 10. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 11. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION) |
(a) Check the memory registration of the memory call function.
Click here
OK:
A seat position can be registered normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Wireless-linked Return Function does not Operate
DESCRIPTION
When a door is
unlocked using the wireless unlock function, the certification ECU
(smart key ECU assembly) sends a key ID signal to the main body ECU
(multiplex network body ECU). When a door is unlocked using the entry
unlock function, the certification ECU (smart key ECU assembly) sends a
door unlock signal and key ID signal to the main body ECU (multiplex
network body ECU). When the main body ECU (multiplex network body ECU)
receives the door unlock signal, it stores the key ID. When the driver
door is opened, the memory call information of the stored key ID is sent
to each driving position related control ECU. Each control ECU receives
the information and then performs the memory call operation according
to predetermined control timing values.
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
|
1. | CHECK FRONT POWER SEAT OPERATION |
(a) Check the operation of the power seat.
Click here
(b) Check the seat position memory function.
Click here
(c) Check the seat position restoration function.
Click here
(d) Check the operation of memory registration of the memory call function.
Click here
|
Result | Proceed to |
|
OK | A |
|
NG (Power seat operation) |
B |
| NG (Seat position memory function) |
C |
| NG (Seat position restoration function) |
D |
| NG (Memory registration) |
E |
| B |
 | GO TO PROBLEM SYMPTOMS TABLE |
| C |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized) |
| D |
| GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position) |
| E |
| GO TO OTHER DIAGNOSIS PROCEDURE (Wireless Transmitter Memory Function does not Operate) |
|
A |
 | |
| 2. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
|
Result | Proceed to |
|
Memory call function linked with the wireless unlock function does not operate. |
A |
| Memory call function linked with the entry unlock function does not operate. |
B |
| Memory call function linked with the wireless unlock function and entry unlock function both do not operate. |
C |
| B |
| GO TO STEP 9 |
| C |
| GO TO STEP 15 |
|
A | |
| |
| 3. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check the wireless unlock function of the wireless door lock control system.
Click here
OK:
Wireless unlock function is normal.
| NG |
| GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
OK | |
| |
| 4. |
CHECK MEMORY CALL FUNCTION (MIRROR OPERATION) |
(a) Check the operation of the outer mirrors using the memory call function.
Click here
|
Result | Proceed to |
|
Outer mirrors operate normally |
A |
| Outer mirrors do not operate normally |
B |
| B |
| GO TO STEP 7 |
|
A | |
| |
| 5. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 6. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call function linked with the wireless unlock function operates normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 7. |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Replace the main body ECU (multiplex network body ECU) with a new or known good one.
Click here
|
NEXT | |
| |
| 8. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call function linked with the wireless unlock function operates normally.
| OK |
| END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| 9. |
CHECK SMART KEY SYSTEM (for Entry Function) |
(a) Check the entry unlock function of the smart key system (for entry function).
Click here
OK:
Entry unlock function is normal.
| NG |
| GO TO SMART KEY SYSTEM (for Entry Function) |
|
OK | |
| |
| 10. |
CHECK MEMORY CALL FUNCTION (MIRROR OPERATION) |
(a) Check the operation of the outer mirrors using the memory call function.
Click here
|
Result | Proceed to |
|
Outer mirrors operate normally |
A |
| Outer mirrors do not operate normally |
B |
| B |
| GO TO STEP 13 |
|
A | |
| |
| 11. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 12. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call function linked with the entry unlock function operates normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 13. |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Replace the main body ECU (multiplex network body ECU) with a new or known good one.
Click here
|
NEXT | |
| |
| 14. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call function linked with the entry unlock function operates normally.
| OK |
| END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| 15. |
CHECK MEMORY CALL FUNCTION (MIRROR OPERATION) |
(a) Check the operation of the outer mirrors using the memory call function.
Click here
|
Result | Proceed to |
|
Outer mirrors operate normally |
A |
| Outer mirrors do not operate normally |
B |
| B |
| GO TO STEP 18 |
|
A | |
| |
| 16. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 17. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call function linked with the wireless unlock and entry unlock function operate normally.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 18. |
READ VALUE USING TECHSTREAM (MEMORY CALL REGISTRATION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Mem SW No. w/KeyID1 | Memory switch linked with key ID1 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID1 MEM SW1: M1 switch linked with key ID1
MEM SW2: M2 switch linked with key ID1 MEM SW3: M3 switch linked with key ID1* |
- |
| Mem SW No. w/KeyID2 |
Memory switch linked with key ID2 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID2 MEM SW1: M1 switch linked with key ID2
MEM SW2: M2 switch linked with key ID2 MEM SW3: M3 switch linked with key ID2* |
- |
| Mem SW No. w/KeyID3 |
Memory switch linked with key ID3 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID3 MEM SW1: M1 switch linked with key ID3
MEM SW2: M2 switch linked with key ID3 MEM SW3: M3 switch linked with key ID3* |
- |
| Mem SW No. w/KeyID4 |
Memory switch linked with key ID4 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID4 MEM SW1: M1 switch linked with key ID4
MEM SW2: M2 switch linked with key ID4 MEM SW3: M3 switch linked with key ID4* |
- |
| Mem SW No. w/KeyID5 |
Memory switch linked with key ID5 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID5 MEM SW1: M1 switch linked with key ID5
MEM SW2: M2 switch linked with key ID5 MEM SW3: M3 switch linked with key ID5* |
- |
| Mem SW No. w/KeyID6 |
Memory switch linked with key ID6 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID6 MEM SW1: M1 switch linked with key ID6
MEM SW2: M2 switch linked with key ID6 MEM SW3: M3 switch linked with key ID6* |
- |
| Mem SW No. w/KeyID7 |
Memory switch linked with key ID7 |
NONE, MEM SW1, MEM SW2 or MEM SW3* |
NONE: No switches linked with key ID7 MEM SW1: M1 switch linked with key ID7
MEM SW2: M2 switch linked with key ID7 MEM SW3: M3 switch linked with key ID7* |
- |
- *: Although this item is displayed on the Techstream, it is not applicable to this vehicle.
Body Electrical > Main Body > Data List
|
Tester Display |
| Mem SW No. w/KeyID1 |
|
Mem SW No. w/KeyID2 |
|
Mem SW No. w/KeyID3 |
|
Mem SW No. w/KeyID4 |
|
Mem SW No. w/KeyID5 |
|
Mem SW No. w/KeyID6 |
|
Mem SW No. w/KeyID7 |
(f) Enter the following menus: Body Electrical / Driver Seat / Data List.
(g) Read the Data List according to the display on the Techstream.
Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Seat Memory No1 | Seat position memorized with M1 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
| Seat Memory No2 |
Seat position memorized with M2 switch |
Mem or Not Mem | Mem: Memorized
Not Mem: Not memorized |
- |
Body Electrical > Driver Seat > Data List
|
Tester Display |
| Seat Memory No1 |
|
Seat Memory No2 |
OK:
A
seat position has been memorized for the seat position memory switch
linked to the electrical key transmitter sub-assembly. (For example, the
value of "Mem SW No. w/KeyID1" is MEM SW1 and the value of "Seat Memory
No1" is Mem.)
| NG |
| PERFORM MEMORY CALL REGISTRATION |
|
OK | |
| |
| 19. |
READ VALUE USING TECHSTREAM (DRIVER DOOR COURTESY SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
FL Door Courtesy SW | Front door courtesy light switch assembly (driver door) signal |
ON or OFF | ON: Driver door open
OFF: Driver door closed |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
| FL Door Courtesy SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO LIGHTING SYSTEM (Door Courtesy Switch Circuit) |
|
OK | |
| |
| 20. |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Replace the main body ECU (multiplex network body ECU) with a new or known good one.
Click here
|
NEXT | |
| |
| 21. |
CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION) |
(a) Check the memory registration and automatic memory call function of the memory call function.
Click here
OK:
Memory call functions linked with the wireless unlock function and entry unlock function operate normally.
| OK |
| END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
