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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1208 (Transfer Case) >> Trouble Diagnosis For System >> VDC Operation Signal (ABS) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT 

    Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to "SELF-DIAGNOSIS ".

    Is any malfunction detected by self-diagnosis? 

    1. YES: Check the malfunctioning system.
    2. NO: GO TO 2.
  2. CHECK TRANSFER CONTROL UNIT 

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

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Check transfer 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 

    1. OK: Inspection End.
    2. NG: Perform self-diagnosis with ABS actuator electric unit (control unit) again. Refer to "SELF-DIAGNOSIS ".
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