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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Transfer Case (ATX14B)) >> DTC/Circuit Diagnosis >> DTC P1808: Vehicle Speed Sensor (Abs) >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

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

    Is any malfunction detected by self-diagnosis? 

    YES: Check the malfunctioning system.

    NO: GO TO 2.

  2. CHECK TRANSFER CONTROL UNIT

    Check transfer control unit input/output signal. Refer to "REFERENCE VALUE ".

    Are the inspection results normal? 

    YES: GO TO 3.

    NO: 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.

    Are the inspection results normal? 

    YES: Inspection End.

    NO: Perform self-diagnosis with ABS actuator and electric unit (control unit) again.