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Home >> Infiniti >> 2017 >> Q50 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 245 (Hybrid Motor System (Diagnostic Trouble Codes (DTCS) P2122-P31FF And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> DTC P31FF: ASCD Vehicle Speed Sensor >> DTC Description >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK DTC PRIORITY

    If DTC P31FF is displayed with DTC UXXXX or P0A1D, first perform the confirmation procedure (trouble diagnosis) for UXXXX or P0A1D.

    Is applicable DTC detected?

    YES 

    Perform diagnosis of applicable. Refer to DTC INDEX .

    NO 

    GO TO STEP 2  .

  2. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    GO TO STEP 3  .

  3. PERFORM DTC CONFIRMATION PROCEDURE

    1. Set the vehicle to READY.
    2. Drive the vehicle at more than 40 km/h (25 MPH).
      CAUTION:

      Always drive the 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 - 1 

    To check malfunction symptom before repair: Refer to INTERMITTENT INCIDENT .

    NO - 2 

    Confirmation after repair: INSPECTION END

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