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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (3 Of 4)) >> DTC/Circuit Diagnosis >> P1603 ECM >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different variant/trim than selected.
  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 
    1. Start the 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 the engine and wait for 10 seconds.
    8. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END

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