Toyota Avalon (XX50): Seat Belt Warning System(for Hv Model)

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE SEAT BELT WARNING SYSTEM

NOTICE:

• When the customer requests a change in a function, first make sure that the function can be customized.
• Be sure to make a note of the current settings before customizing.
• When troubleshooting a function, first make sure that the function is set to the default setting.
• These buzzers should be on for safe driving. Perform this procedure only if it is necessary to set the buzzer to off (disabled).

HINT:

The following items can be customized.

(a) Customizing with the Techstream

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Customize Setting / Warning.

(5) Select the setting by referring to the table below.

HINT:

These settings are only valid when the vehicle is driven at approximately 20 km/h (12 mph) or more.

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the following table, 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 power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter, Occupant Detection, SRS Airbag or Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

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 power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Diagnosis System

DIAGNOSIS SYSTEM

CHECK DLC3

(a) Check the DLC3.

Click here

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery.

Driver Side Seat Belt Warning Light does not Operate

DESCRIPTION

The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the state of the front seat inner belt assembly LH.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The seat belt warning system 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

HINT:

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.

Click here

If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.

Click here

PROCEDURE

(a) Clear the DTCs.

(b) Check for DTCs.

B

GO TO AIRBAG SYSTEM

A

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / SRS Airbag / Data List.

(e) Read the Data List according to the display on the Techstream.

A

USE SIMULATION METHOD TO CHECK

B

REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

C

REPLACE AIR BAG ECU ASSEMBLY

Front Passenger Side Seat Belt Warning Light does not Operate

DESCRIPTION

When the power switch is turned on (IG), the occupant detection ECU sends signals to the airbag ECU assembly to indicate the state of the front seat inner belt assembly RH and also whether the front passenger seat is occupied. The airbag ECU assembly sends those signals to the combination meter assembly via CAN communication. The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with these signals.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The seat belt warning system 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

HINT:

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.

Click here

If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter.

Click here

PROCEDURE

(a) Clear the DTCs.

(b) Check for DTCs.

B

GO TO OCCUPANT CLASSIFICATION SYSTEM

A

(a) Clear the DTCs.

(b) Check for DTCs.

B

GO TO AIRBAG SYSTEM

A

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Occupant Detection / Data List.

(e) Read the Data List according to the display on the Techstream.

B

REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

C

REPLACE OCCUPANT DETECTION ECU

A

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / SRS Airbag / Data List.

(e) Read the Data List according to the display on the Techstream.

A

USE SIMULATION METHOD TO CHECK

B

REPLACE AIR BAG ECU ASSEMBLY

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

• Use the following procedure to troubleshoot the seat belt warning system.
• *: Use the Techstream.

PROCEDURE

NEXT

(a) Interview the customer to confirm the problem.

Click here

NEXT

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary 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

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

B

GO TO CAN COMMUNICATION SYSTEM

A

(a) Clear the DTCs.

(b) Check for DTCs.

B

GO TO AIRBAG SYSTEM

A

(a) Clear the DTCs.

(b) Check for DTCs.

B

GO TO OCCUPANT CLASSIFICATION SYSTEM

A

(a) Check the operation of the speedometer, shift indicator and brake warning light on the combination meter assembly.

OK:

The speedometer, shift indicator and brake warning light on the combination meter assembly operate normally.

NG

GO TO METER / GAUGE SYSTEM

OK

(a) Refer to Problem Symptoms Table.

Click here

B

GO TO STEP 10

A

(a) Data List / Active Test

Click here

(b) Terminals of ECU

Click here

(c) On-vehicle Inspection

Click here

NEXT

NEXT

NEXT

END

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT DRIVER SEAT BELT WARNING LIGHT

HINT:

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.

(a) Turn the power switch on (IG).

(b) When the driver seat belt is not fastened, check that the seat belt warning light on the combination meter assembly blinks for 6 seconds.

Check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(c) Lift the vehicle using a swing arm type lift.

Click here

(d) Turn the power switch on (READY).

(e) Check the state of the seat belt warning light on the combination meter assembly under the following conditions:

(1) Step 1:

When the driver seat belt is not fastened, the shift lever is in any position other than P and the parking brake is released, check that the seat belt warning light on the combination meter assembly blinks.

(2) Step 2:

When the driver seat belt is not fastened and the vehicle is driven at approximately 20 km/h (12 mph) or more, check that the seat belt warning light on the combination meter assembly blinks.

After 2 minutes, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(3) Step 3:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the shift lever is moved to P, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(4) Step 4:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the parking brake is applied, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(5) Step 5:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the driver seat belt is fastened, check that the seat belt warning light on the combination meter assembly turns off.

2. INSPECT FRONT PASSENGER SEAT BELT WARNING LIGHT

HINT:

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.

(a) Place a weight of 20 kg (44.0 lb) on the front passenger seat.

NOTICE:

Place the weight on the seat cushion and allow it to come into contact with the seatback.

(b) Fasten the driver seat belt.

(c) Turn the power switch on (IG).

(d) When the front passenger seat belt is not fastened with the front passenger seat occupied, check that the seat belt warning light on the combination meter assembly blinks for 6 seconds.

Check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(e) Lift the vehicle using a swing arm type lift.

Click here

(f) Turn the power switch on (READY).

(g) Check the state of the seat belt warning light on the combination meter assembly under the following conditions:

(1) Step 1:

When the front passenger seat belt is not fastened, the shift lever is in any position other than P and the parking brake is released, check that the seat belt warning light on the combination meter assembly blinks.

(2) Step 2:

When the front passenger seat belt is not fastened and the vehicle is driven at approximately 20 km/h (12 mph) or more, check that the seat belt warning light on the combination meter assembly blinks.

After 2 minutes, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(3) Step 3:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the shift lever is moved to P, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(4) Step 4:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the parking brake is applied, check that the seat belt warning light on the combination meter assembly changes from blinking to illuminated.

(5) Step 5:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, with the front passenger seat belt not fastened and the weight on the front passenger seat, check that the seat belt warning light on the combination meter assembly turns off when the weight is removed from the front passenger seat.

(6) Step 6:

Starting from step 1 with the seat belt warning light on the combination meter assembly blinking, when the front passenger seat belt is fastened, check that the seat belt warning light on the combination meter assembly turns off.

3. INSPECT REAR SEAT BELT WARNING LIGHT

(a) Check the state of the rear seat belt warning light on the radio and display receiver assembly: (1) Turn the power switch off. (2) Open and then close either rear door. (3) Turn the power switch on (IG). (4) When a rear seat belt is not fastened, check that the rear seat belt warning light on the radio and display receiver assembly is illuminated. (5) After 30 seconds, check that the rear seat belt warning light on the radio and display receiver assembly turns off. (6) When one of the rear seat belts is unfastened from being fastened, check that the rear seat belt warning light on the radio and display receiver assembly illuminates.

*1 Rear Seat Belt Warning Light (Radio and Display Receiver Assembly) *a LH *b Center *c RH

4. INSPECT SEAT BELT WARNING BUZZER

HINT:

The seat belt warning buzzer can be customized. Make sure that this function is ON.

Click here

(a) for Front Seat Belt Warning Buzzer:

(1) Place a weight of 20 kg (44.0 lb) on the front passenger seat.

NOTICE:

Place the weight on the seat cushion and allow it to come into contact with the seatback.

(2) After turning the power switch on (IG), wait for approximately 1.8 seconds with the driver seat belt not fastened check that the seat belt warning buzzer in the combination meter assembly sounds at an interval of 1.2 seconds for 6 seconds.

(3) Lift the vehicle using a swing arm type lift.

Click here

(4) Turn the power switch on (READY).

(5) When the driver or front passenger seat belt is not fastened and the vehicle is driven at approximately 20 km/h (12 mph) or more, check that the seat belt warning buzzer in the combination meter assembly sounds once.

(6) When 24 seconds have passed after the buzzer sounded, check that the seat belt warning buzzer in the combination meter assembly sounds at an interval of 1.2 seconds for 6 seconds.

(7) After the seat belt warning buzzer has been sounding for 6 seconds at an interval of 1.2 seconds, check that the seat belt warning buzzer in the combination meter assembly sounds at an interval of 0.4 seconds for 90 seconds.

(8) Check that the seat belt warning buzzer in the combination meter assembly stops 96 seconds after it started sounding at an interval of 1.2 seconds.

(9) After the seat belt warning buzzer in the combination meter assembly stops, turn the power switch off and then start the hybrid control system. Drive the vehicle at approximately 20 km/h (12 mph) or more with either the driver or front passenger seat belt not fastened and check that the buzzer sounds in the same pattern again.

(10) After the seat belt warning buzzer in the combination meter assembly stops, fasten the driver or front passenger seat belt, drive the vehicle at approximately 20 km/h (12 mph) or more, unfasten the driver or front passenger seat belt and check that the buzzer sounds in the same pattern again.

(b) for Rear Seat Belt Warning Buzzer:

(1) Open and close either rear door.

(2) Lift the vehicle using a swing arm type lift.

Click here

(3) Fasten the driver seat belt.

(4) Turn the power switch on (READY).

(5) Fasten and unfasten a rear seat belt then drive the vehicle at approximately 20 km/h (12 mph) or more and check that the seat belt warning buzzer in the combination meter assembly sounds once.

(6) When 24 seconds have passed after the buzzer sounded, check that the seat belt warning buzzer in the combination meter assembly sounds at an interval of 1.2 seconds for 6 seconds.

(7) After the seat belt warning buzzer has been sounding for 6 seconds at an interval of 1.2 seconds, check that the seat belt warning buzzer in the combination meter assembly sounds at an interval of 0.4 seconds for 30 seconds.

(8) Check that the seat belt warning buzzer in the combination meter assembly stops 36 seconds after it started sounding at an interval of 1.2 seconds.

(9) After the seat belt warning buzzer in the combination meter assembly stops, turn the power switch off, open and close either rear door and then start the hybrid control system. Fasten and unfasten a rear seat belt then drive the vehicle at approximately 20 km/h (12 mph) or more and check that the buzzer sounds in the same pattern again.

(10) After the seat belt warning buzzer in the combination meter assembly stops, fasten a rear seat belt, drive the vehicle at approximately 20 km/h (12 mph) or more, unfasten the rear seat belt and check that the buzzer sounds in the same pattern again.

Parts Location

PARTS LOCATION

ILLUSTRATION

ILLUSTRATION

ILLUSTRATION

ILLUSTRATION

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.

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.

Symptom	Suspected Area	Link
Driver side seat belt warning light does not operate	Refer to the "Driver Side Seat Belt Warning Light does not Operate''
Front passenger side seat belt warning light does not operate	Refer to the "Front Passenger Side Seat Belt Warning Light does not Operate''
Rear seat belt warning light malfunction	Refer to the "Rear Seat Belt Warning Light Malfunction"
Seat belt warning light does not operate for all seats	Combination meter assembly
Seat belt warning buzzer does not operate	Check customized settings using the Techstream
	Combination meter assembly

Rear Seat Belt Warning Light Malfunction

DESCRIPTION

The main body ECU (multiplex network body ECU) detects whether either the rear doors are open or closed based on the courtesy light switch condition and then sends the rear door status signal to the combination meter assembly. The combination meter assembly detects rear seat belt state. The rear seat belt warning light on the radio and display receiver assembly illuminates, blinks or turns off in accordance with the rear door state, vehicle speed and rear seat belt state.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• The seat belt warning 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

• Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

(a) Connect the Techstream to the DLC3.

(b) Turn the power 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.

OK:

The Techstream display changes correctly in response to the rear door condition.

NG

GO TO LIGHTING SYSTEM

OK

(a) Check the rear seat belt warning function. Click here

*1 Rear Seat Belt Warning Light (Radio and Display Receiver Assembly) *a LH *b Center *c RH

A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 6

D

GO TO STEP 10

E

GO TO STEP 14

B

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

B

REPLACE COMBINATION METER ASSEMBLY

A

(a) Disconnect the G20 radio and display receiver assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Reconnect the G20 radio and display receiver assembly connector.

(b) Disconnect the G16 combination meter assembly connector.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Read the Data List according to the display on the Techstream.

B

GO TO STEP 8

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the K70 rear seat inner with center belt assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE REAR SEAT INNER WITH CENTER BELT ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

B

REPLACE COMBINATION METER ASSEMBLY

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the G20 radio and display receiver assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Read the Data List according to the display on the Techstream.

B

GO TO STEP 12

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the K71 rear seat inner belt assembly LH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE REAR SEAT INNER BELT ASSEMBLY LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

B

REPLACE COMBINATION METER ASSEMBLY

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the G20 radio and display receiver assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Read the Data List according to the display on the Techstream.

B

GO TO STEP 16

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the K71 rear seat inner belt assembly LH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE REAR SEAT INNER BELT ASSEMBLY LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

B

REPLACE COMBINATION METER ASSEMBLY

A

(a) Disconnect the G16 combination meter assembly connector.

(b) Disconnect the G20 radio and display receiver assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

System Description

SYSTEM DESCRIPTION

SEAT BELT WARNING SYSTEM DESCRIPTION

(a) Seat belt warning light operation for driver seat belt:

The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the driver seat belt state, vehicle speed, shift lever position and parking brake state.

(b) Seat belt warning light operation for front passenger seat belt:

The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with whether the front passenger seat is occupied, the front passenger seat belt state, vehicle speed, shift lever position and parking brake state.

(c) Rear seat belt warning light:

The rear seat belt warning light on the radio and display receiver assembly illuminates, blinks or turns off in accordance with the rear door state, vehicle speed and rear seat belt state.

(d) Front seat belt warning buzzer:

After turning the power switch on (IG), if the driver seat belt is not fastened within 1.8 seconds, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 1.2 seconds for 6 seconds.

When the vehicle is driven at approximately 20 km/h (12 mph) or more with the front passenger seat occupied and the driver or front passenger seat belt not fastened, the seat belt warning buzzer in the combination meter assembly will sound once.

When 24 seconds have passed after the buzzer sounded, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 1.2 seconds for 6 seconds.

After that, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 0.4 seconds for 90 seconds.

(e) Rear seat belt warning buzzer:

When the vehicle is driven at approximately 20 km/h (12 mph) or more with a rear seat belt not fastened, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 1.2 seconds for 6 seconds.

After that, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 0.4 seconds for 30 seconds.

FUNCTION OF MAIN COMPONENTS

System Diagram

SYSTEM DIAGRAM

FRONT SEAT BELT WARNING

REAR SEAT BELT WARNING

Terminals Of Ecu

TERMINALS OF ECU

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

Click here

(b) Reconnect the instrument panel junction block assembly connectors.

(c) Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

CHECK COMBINATION METER ASSEMBLY

(a) Disconnect the G16 combination meter assembly connector.

(b) Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

(c) Reconnect the G16 combination meter assembly connector.

(d) Measure the voltage according to the value(s) in the table below.

AIRBAG ECU ASSEMBLY

CHECK OCCUPANT DETECTION ECU

(a) Measure the voltage and check for pulses according to the value(s) in the table below.