Diagnostic Procedure

Perform self-diagnosis. Refer to "SELF-DIAG RESULT MODE ".

Is the "CAN COMM CIRCUIT [U1000]" displayed? 

Yes: Perform trouble diagnosis for CAN communication line. Refer to "CAN COMMUNICATION LINE ".

NO: GO TO 2.

Perform self-diagnosis for ECM. Refer to "EMISSION-RELATED DIAGNOSTIC INFORMATION ".

Is any malfunction detected by self-diagnosis? 

Yes: Check the malfunctioning system.

NO: GO TO 3.

Perform trouble diagnosis for AWD solenoid system. Refer to "AWD SOLENOID ".

OK or NG 

OK: GO TO 4.

NG: Repair or replace damaged parts.

1. Turn ignition switch "OFF".
2. Set the selector lever to "N" (neutral) position and disengage the parking brake.
3. Lift up the vehicle.
4. Rotate the rear propeller shaft by hand.
5. Hold front propeller shaft lightly.

Does front propeller shaft rotate? 

Yes: Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to "DISASSEMBLY AND ASSEMBLY ".

NO: GO TO 5.

Check again.

OK or NG 

OK: INSPECTION END 

NG: GO TO 6.

Check AWD control unit input/output signal. Refer to "AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG 

OK: INSPECTION END 

NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.