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DTC Confirmation Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC PRIORITY 

    If DTC P219A, or P219B is displayed with other DTC, first perform the confirmation procedure (trouble diagnosis) for the other DTC.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Index .

    NO

    GO TO 2.

  2. PRECONDITIONING-I 

    If DTC Confirmation Procedure has been previously conducted, always perform the following 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.
    NOTE: Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

    GO TO 3.

  3. PRECONDITIONING-II 
    1. Turn ignition switch ON.
    2. Clear the mixture ratio self-learning value. Refer to Description .

    Do you have CONSULT?

    YES

    GO TO 4.

    NO

    GO TO 7.

  4. PERFORM DTC CONFIRMATION PROCEDURE-I 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. On CONSULT screen, select "ENGINE">>"Data Monitor">>"COOLAN TEMP/S".
    3. Start engine.
    4. Make sure that "COOLAN TEMP/S" indicates more than 66 deg.C (151 deg.F).

    GO TO 5.

  5. PERFORM DTC CONFIRMATION PROCEDURE-II 

    SYMBOL With CONSULT

    1. On CONSULT screen, select "ENGINE">>"Data Monitor">>"SYSTEM 1 DIAGNOSIS B B1", "SYSTEM 1 DIAGNOSIS A B1", "SYSTEM 1 DIAGNOSIS B B2" and "SYSTEM 1 DIAGNOSIS A B2".
    2. Drive vehicle under the following conditions for at least 5 consecutive seconds.
      CAUTION:
      • Always drive vehicle at a safe speed.

      ENG SPEED

      950 - 1, 800 rpm

      COOLAN TEMP/S

      More than 80 deg.C (176 deg.F)

      B/FUEL SCHDL

      5 - 8 msec

      Selector lever

      D position
      • SYSTEM 1 DIAGNOSIS B B1
      • SYSTEM 1 DIAGNOSIS B B2

      PRSENT
      NOTE:
      • Drive the vehicle at approximately 88 km/h (55 MPH) allows easy diagnosis.
      • Keep the accelerator pedal as possible during cruising.
    3. Check "SYSTEM 1 DIAGNOSIS A B1" or "SYSTEM 1 DIAGNOSIS A B2" indication.

    Is "CMPLT" displayed?

    YES

    GO TO 6.

    NO

    GO TO 3.

  6. PERFORM DTC CONFIRMATION PROCEDURE-III 

    Check 1st trip DTC.

    Is DTC P219A or P219B detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END

  7. PERFORM DTC CONFIRMATION PROCEDURE-IV 

    SYMBOL Without CONSULT

    1. Start the engine and warm it up to normal operating temperature.
    2. Drive vehicle under the following conditions for at least 5 consecutive seconds.
      CAUTION:
      • Always drive vehicle at a safe speed.

      Engine speed

      950 - 1, 800 rpm

      Calculated load value

      27 - 57 %

      Selector lever

      D position
      NOTE:
      • Drive the vehicle at approximately 88 km/h (55 MPH) allows easy diagnosis.
      • Keep the accelerator pedal as possible during cruising.
    3. Check 1st trip DTC.

    Is DTC P219A or P219B detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END

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