Diagnosis Procedure
- CHECK FUSE
Check for blown fuses.
Power source Fuse No. Battery 34 Is the inspection result normal?
YES
GO TO STEP 2 .
NO
Be sure to eliminate cause of malfunction before installing new fuse.
- CHECK BATTERY POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connector and ground.
Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) Battery power supply M149 19 OFF Battery voltage Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Check harness between AV control unit and fuse.
- CHECK ACC POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connector and ground.
Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) ACC power supply M149 7 ACC Battery voltage Is the inspection result normal?
YES
GO TO STEP 5 .
NO
GO TO STEP 4.
- CHECK ACC POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect AV control unit harness connector and BCM harness connector.
- Check continuity between AV control unit harness connector and BCM harness connector.
AV control unit BCM Continuity Connector Terminal Connector Terminal M149 7 M122 95 Existed - Check continuity between AV control unit harness connector and ground.
AV control unit Ground Continuity Connector Terminal M149 7 Not existed
Is the inspection result normal?
YES
GO TO STEP 5 .
NO
Repair harness or connector.
- CHECK GROUND CIRCUIT
Check continuity between AV control unit harness connector and ground.
AV control unit Ground Continuity Connector Terminal M149 20 Not existed Is the inspection result normal?
YES
INSPECTION END
NO
Repair harness or connector.