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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 5)) >> DTC/Circuit Diagnosis >> DTC P0603: ECM >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. PRECONDITIONING 

    Perform the following procedure before performing DTC Confirmation Procedure.

    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 FOR DTC P062F 
    1. Start engine and wait at least 10 seconds.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Repeat steps 1 and 2 for 4 times.
    4. Turn ignition switch ON.
    5. Erase DTC.
    6. Turn ignition switch OFF and wait at least 10 seconds.
    7. Start engine and wait at least 10 seconds.
    8. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0603 
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON and wait at least 10 seconds.
    3. Turn ignition switch OFF and wait at least 5 minutes.
    4. Turn ignition switch ON and wait at least 10 seconds.
    5. Repeat steps 3 and 4 for 5 times.
    6. Turn ignition switch ON.
    7. 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

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