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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 493 (Engine Control System (VK56VD) DTC/Circuit Diagnosis (4 Of 6)) >> DTC/Circuit Diagnosis >> DTC P0603: ECM >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. PRECONDITIONING 

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition switch ON.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 1 second.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Repeat step 1 and 2 for 10 times.
    4. Turn ignition switch ON.
    5. 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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