How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the meter / gauge system.
- *: Use the Techstream.
PROCEDURE
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1. | VEHICLE BROUGHT TO WORKSHOP |
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NEXT |
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| 2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
- In troubleshooting, confirm that the problem symptoms have been
accurately identified. Preconceptions should be discarded in order to
make an accurate judgment. To clearly understand what the problem
symptoms are, it is extremely important to ask the customer about the
problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
- The following 5 items are important points for problem analysis:
|
What |
Vehicle model, system name |
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When |
Date, time, occurrence frequency |
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Where |
Road conditions |
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Under what conditions? |
Driving conditions, weather conditions |
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How did it happen? |
Problem symptoms |
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NEXT | |
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| 3. |
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 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.
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NEXT | |
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| 4. |
CHECK 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. |
CHECK FOR DTC* (METER / GAUGE SYSTEM) |
(a) Check for DTCs.
Body Electrical > Combination Meter > Trouble Codes
|
Result | Proceed to |
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
A | |
| |
| 6. |
PROBLEM SYMPTOM CONFIRMATION |
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NEXT | |
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NEXT | |
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| 8. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
|
Result | Proceed to |
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Fault is not listed in Problem Symptoms Table |
A |
| Fault is listed in Problem Symptoms Table |
B |
| B |
| GO TO PROBLEM SYMPTOMS TABLE |
|
A | |
| |
| 9. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU.
Click here
(b) Data List / Active Test.
Click here
(c) On-vehicle Inspection.
Click here
(d) Inspection
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NEXT | |
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NEXT | |
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| 11. |
ADJUST, REPAIR OR REPLACE |
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NEXT | |
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| NEXT |
| END |
Hybrid System Indicator Malfunction
DESCRIPTION
A hybrid system
indicator has been included on this vehicle. In this circuit, the
combination meter assembly receives the hybrid system indicator signal
from the hybrid vehicle control ECU via CAN communication. The
combination meter assembly controls the operation of the hybrid system
indicator according to the hybrid system indicator signal received from
the hybrid vehicle control ECU via CAN communication.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the combination meter assembly, always replace it with a
new one. If a combination meter assembly which was installed to another
vehicle is used, the information stored in it will not match the
information from the vehicle and a DTC may be stored.
- Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here 
PROCEDURE
|
1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication DTCs are output.
Click here
|
Result | Proceed to |
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
A |
 | |
| 2. |
CHECK FOR DTC (HYBRID CONTROL SYSTEM) |
(a) Check if hybrid control system DTCs are output.
Click here
Powertrain > Hybrid Control > Trouble Codes
|
Result | Proceed to |
|
DTCs are not output | A |
|
DTCs are output | B |
| B |
| GO TO HYBRID CONTROL SYSTEM |
|
A | |
| |
| 3. |
READ VALUE USING TECHSTREAM |
(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.
Body Electrical > Combination Meter > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
HV System Indicator | Hybrid system indicator value |
Min.: -101%, Max.: 511% or Unset |
Current hybrid system indicator value |
"Unset" is displayed when the vehicle is stopped and the power switch is on (READY). |
Body Electrical > Combination Meter > Data List
|
Tester Display |
| HV System Indicator |
OK:
Hybrid system indicator value displayed on the Techstream is almost the same as the hybrid system indicator indication.
| OK |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPLACE COMBINATION METER ASSEMBLY |
Initialization
INITIALIZATION
MAINTENANCE REQUIRED REMINDER RESET PROCEDURE
(a) Perform initialization using the multi-information display.
(1) Turn the power switch on (IG).
(2) Enter the following menus: Settings / Vehicle Settings / Scheduled Maintenance.
(3) Perform initialization according to the multi-information display.
