Diagnosis Procedure
Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.
- Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.
- The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.
- Be sure to wear insulating protective equipment before beginning work on the high voltage system.
- Never allow workers other than the responsible person to touch the vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.
- Refer to HIGH VOLTAGE PRECAUTIONS .
Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Information. A malfunction may occur if this is not observed.
- CHECK FUSE
Check that the 10A fuse (No. 80) is not blown (open).
NOTE:Refer to FUSE AND FUSIBLE LINK ARRANGEMENT for fuse layout.
Is the fuse blown (open) ?
YES
GO TO STEP 2 .
NO
Replace the fuse after repairing the applicable circuit.
- CHECK POWER SUPPLY - 1
Check voltage between Li-ion battery harness connector and ground.
+ - Voltage Li-ion battery Connector Terminal Connector Terminal T28 6 T28 2 Battery voltage 14 Is the inspection result normal?
YES
GO TO STEP 6 .
NO
GO TO STEP 3 .
- CHECK POWER SUPPLY - 2
- Disconnect Li-ion battery harness connector.
- Check voltage between Li-ion battery harness connector and ground.
+ - Voltage Li-ion battery Connector Terminal T28 6 Ground Battery voltage Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace error-detected parts.
- CHECK GROUND
Check installation status of ground (B264). Refer to CIRCUIT INSPECTION .
Is the inspection result normal?
YES
GO TO STEP 5 .
NO
Recover the installation status of Ground.
- CHECK GROUND CIRCUIT - 1
Check continuity between Li-ion battery harness connector and ground.
Li-ion battery - Continuity Connector Terminal T28 2 Ground Existed 14 Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace error-detected parts.
- PRECONDITIONINGWARNING:
Follow the instructions below before starting the procedure.
- Disconnect high voltage circuit. Refer to HOW TO DISCONNECT HIGH VOLTAGE .
- Check voltage in high voltage circuit. Refer to CHECK VOLTAGE IN HIGH VOLTAGE CIRCUIT .
GO TO STEP 7 .
- CHECK POWER SUPPLY CIRCUIT
- Remove Li-ion battery. Refer to REMOVAL AND INSTALLATION .
- Check continuity between Li-ion battery harness connector and Li-ion battery controller harness connector.
Li-ion battery Li-ion battery controller Continuity Connector Terminal Connector Terminal LB39 6 LB1 12 Existed
Is the inspection result normal?
YES
GO TO STEP 8 .
NO
Repair or replace error-detected parts.
- CHECK GROUND CIRCUIT - 2
Check continuity between Li-ion battery harness connector and Li-ion battery controller harness connector.
Li-ion battery Li-ion battery controller Continuity Connector Terminal Connector Terminal LB39 2 LB1 2 Existed 14 14 Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace error-detected parts.