Diagnosis Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK TRANSFER CONTROL UNIT POWER SUPPLY (1)
- Turn the ignition switch OFF.
- Disconnect transfer control unit harness connector.
- Check the voltage between transfer control unit harness connector and ground.VOLTAGE SPECIFICATION
Transfer control unit - Voltage Connector Terminal E59 20 Ground Battery voltage - Turn the ignition switch ON.CAUTION: Never start the engine.
- Check the voltage between transfer control unit harness connector and ground.VOLTAGE SPECIFICATION
Transfer control unit - Voltage Connector Terminal E59 20 Ground Battery voltage Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- CHECK TRANSFER CONTROL UNIT POWER SUPPLY (2)
- Turn the ignition switch OFF.
- Check the 10A fuse (#34).
- Check the harness for open or short between transfer control unit harness connector No. 0 terminal and 10A (#34).
Is the inspection result normal?
YES: Perform the trouble diagnosis for power supply circuit. Refer to "WIRING DIAGRAM - BATTERY POWER SUPPLY - ".
NO: Repair or replace error-detected parts.
- CHECK TRANSFER CONTROL UNIT GROUND
- Turn the ignition switch OFF.
- Check the continuity between transfer control unit harness connector and ground.CONTINUITY SPECIFICATION
Transfer control unit - Continuity Connector Terminal E60 44 Ground Existed 46 Is the inspection result normal?
YES: GO TO 4.
NO: Repair or replace error-detected parts.
- CHECK TERMINALS AND HARNESS CONNECTORS
Check transfer control unit pin terminals for damage or loose connection with harness connector.
Is inspection result normal?
YES: After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC "P181B" is detected, Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair or replace error-detected parts.