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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (5.6L) (5 Of 6)) >> DTC/Circuit Diagnosis >> DTC P219B: Air Fuel Ratio >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC PRIORITY 
    • If DTC P219A or P219B is displayed with other DTC, first perform the trouble diagnosis for other DTC.
    • If DTC P219A or P219B is displayed with P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2 or P21A3, first perform the trouble diagnosis for P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2 or P21A3.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Index .

    NO

    GO TO 2.

  2. PRECONDITIONING 

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

    Will CONSULT be used?

    YES

    GO TO 4.

    NO

    GO TO 7.

  4. PERFORM DTC CONFIRMATION PROCEDURE-1 
    1. Turn ignition switch ON.
    2. Select "COOLAN TEMP/S" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
    3. Start engine.
    4. Make sure that "COOLAN TEMP/S" indicates more than 80 deg.C (176 deg.F).

    GO TO 5.

  5. PERFORM DTC CONFIRMATION PROCEDURE-2 

    SYMBOL With CONSULT

    1. Select "SYSTEM 1 DIAGNOSIS B B1" and "SYSTEM 1 DIAGNOSIS A B1" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
    2. Drive vehicle under the following conditions for at least 5 consecutive seconds.
      CAUTION:
      • Always drive vehicle at a safe speed.

      ENG SPEED

      1, 200 - 1, 600rpm

      COOLAN TEMP/S

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

      B/FUEL SCHDL

      8 - 12 msec

      Selector lever

      D position

      SYSTEM 1 DIAGNOSIS B B1

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

    Is "CMPLT" displayed?

    YES

    GO TO 6.

    NO

    GO TO 3.

  6. PERFORM DTC CONFIRMATION PROCEDURE-3 

    Check 1st trip DTC.

    Is 1st trip DTC 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-4 

    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

      1, 200 - 1, 600 rpm

      Calculated load value

      34 - 68 %

      Selector lever

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

    Is 1st trip DTC detected?

    YES

    Go to Diagnosis Procedure .

    NO

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

    NO

    Confirmation after repair: INSPECTION END

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