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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1550 To P2A03 >> DTC P1574: ASCD Vehicle Speed Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DTC WITH TCM

    Check DTC with TCM. Refer to "CONSULT FUNCTION (TRANSMISSION) ".

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Perform Diagnosis Procedure corresponding to the DTC indicated.

  2. CHECK DTC WITH "ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)"

    Refer to "CONSULT FUNCTION ".

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Perform Diagnosis Procedure corresponding to the DTC indicated.

  3. CHECK DTC WITH "COMBINATION METER"

    Refer to "CONSULT FUNCTION ".

    : INSPECTION END

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