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Diagnostic Procedure

  1. CHECK DTC WITH ECM 

    Perform self-diagnosis with ECM. Refer to "EMISSION-RELATED DIAGNOSTIC INFORMATION " (VQ engine models) or "EMISSION-RELATED DIAGNOSTIC INFORMATION " (VK engine models).

    Is any malfunction detected by self-diagnosis?

    YES : Check the malfunctioning system.

    NO : GO TO 2.

  2. CHECK AWD CONTROL UNIT 

    Check AWD control unit input/output signal. Refer to "AWD Control Unit Input/Output Signal Reference Values ".

    OK or NG 

    OK : GO TO 3.

    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.

  3. CHECK DTC 

    Perform the self-diagnosis, after driving a vehicle for a while.

    OK or NG 

    OK : INSPECTION END 

    NG : Perform self-diagnosis with ECM again. Refer to "EMISSION-RELATED DIAGNOSTIC INFORMATION " (VQ engine models) or "EMISSION-RELATED DIAGNOSTIC INFORMATION " (VK engine models).