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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> U1040 Eng Comm Circuit >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. PRECONDITIONING 

    If another DTC Confirmation Procedure is conducted just before this procedure, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 10 seconds.
    2. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    DTC Diagnosis Procedure 

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END

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