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Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1211 Through P2A03 >> DTC P1574: ASCD Vehicle Speed Sensor >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test:

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

      : GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE
    1. Start engine (VDC switch OFF).
    2. Drive the vehicle at more than 40 km/h (25 MPH).
      CAUTION: Always drive vehicle at a safe speed.
      NOTE: This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.
    3. Check DTC.

      Is DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END