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Home >> Infiniti >> 2009 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1140 To P2A03 >> DTC P1574: ASCD Vehicle Speed Sensor >> Diagnosis Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnosis Procedure

  1. CHECK DTC WITH TCM

    Check DTC with TCM. Refer to "OBD-II DIAGNOSTIC TROUBLE CODE (DTC) ".

    OK or NG 

    OK: GO TO 2.

    NG: Perform trouble shooting relevant to DTC indicated.

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

    Refer to "CONSULT-III FUNCTION (ABS) ".

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace.

  3. CHECK COMBINATION METER FUNCTION

    Check combination meter function.

    Refer to COMBINATION METER .

    INSPECTION END 

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