Diagnosis Procedure
- CHECK AWD SOLENOID POWER SUPPLY (1)
- Turn the ignition switch OFF.
- Disconnect AWD Control Unit harness connector.
- Check the voltage between AWD Control Unit harness connector and ground.
AWD Control Unit
--
Voltage
Connector
Terminal
B17
9
Ground
Battery voltage
- Turn the ignition switch OFF.CAUTION: Never start the engine.
- Check the voltage between AWD Control Unit harness connector and ground.
AWD Control Unit
--
Voltage
Connector
Terminal
B17
9
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK AWD SOLENOID POWER SUPPLY (2)
- Turn the ignition switch OFF.
- Check the 10 A fuse (No. 33)
- Check the harness for open or short between AWD Control Unit harness connector No. 9 terminal and 10 A (No. 33).
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 AWD CONTROL UNIT GROUND
Check the continuity between AWD Control Unit harness connector and ground.
AWD Control Unit
--
Continuity
Connector
Terminal
B17
10
Ground
Existed
11
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK AWD SOLENOID CIRCUIT (1)
Check the resistance between AWD Control Unit terminals.
AWD Control Unit
Resistance (Approx.)
Terminal
Terminal
B17
1
2
2.45 Ohm
Is the inspection result normal?
YES
GO TO 7.
NO
GO TO 5.
- CHECK AWD SOLENOID CIRCUIT (2)
- Disconnect AWD solenoid harness connector.
- Check the continuity between AWD Control Unit harness connector and AWD solenoid harness connector.
AWD Control Unit
AWD solenoid
Continuity
Connector
Terminal
Connector
Terminal
B17
1
F57
1
Existed
2
2
- Check the continuity between AWD Control Unit harness connector and the ground.
AWD Control Unit
--
Continuity
Connector
Terminal
B17
1
Ground
Not existed
2
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace error-detected parts.
- CHECK AWD SOLENOID
Check AWD solenoid. Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 7.
NO
AWD solenoid is malfunctioning. Replace Electric Controlled Coupling. Refer to Exploded View .
- CHECK TERMINALS AND HARNESS CONNECTORS
- Check AWD Control Unit pin terminals for damage or loose connection with harness connector.
- Check AWD solenoid pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
Replace AWD Control Unit. Refer to Removal and Installation .
NO
Repair or replace error-detected parts.