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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 >> P2610 ECM Internal Timer >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure

DTC Confirmation Procedure

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

    It is necessary to erase permanent DTC?

    YES

    GO TO 4.

    NO

    GO TO 2.

  2. PRECONDITIONING 
    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.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 12 V or more under ignition switch OFF condition.

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE-I 
    1. Turn ignition switch ON and wait at least 190 seconds.
    2. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    DTC Diagnosis Procedure 

    NO

    INSPECTION END

  4. PRECONDITIONING 
    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.

    TESTING CONDITION:

    • Before performing the following procedure, confirm that battery voltage is 12 V or more under ignition switch OFF condition.
    • Before performing the following procedure, check that fuel level is between 2/8 and 7/8.

    GO TO 5.

  5. PERFORM DTC CONFIRMATION PROCEDURE-I 
    1. Turn ignition switch ON and wait at least 190 seconds.
    2. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    DTC Diagnosis Procedure 

    NO

    GO TO 6.

  6. PERFORM DTC CONFIRMATION PROCEDURE-II 
    CAUTION: To start this self-diagnosis, the conditions listed bellow are required to be satisfied. Perform the following steps to satisfy the conditions.
    • Engine coolant temperature decrease by 55 deg. C (131 deg. F) or more during the time between an ignition switch OFF (after engine warm-up) and the second ignition switch ON.
    • A fuel temperature at the second ignition switch ON is -5 deg. C (23 deg. F) or more and less than 35 deg. C (95 deg. F).
    • The temperature difference between engine coolant and fuel is 5 deg. C (41 deg. F) or more.
    NOTE: This self-diagnosis is not performed if the distance traveled is extremely short.
    1. Turn ignition switch ON.
    2. Start engine and warm it up to normal operating temperature.
    3. Turn ignition switch OFF and soak the vehicle for at least 12 hours.
      CAUTION:
      • Never turn ON the ignition switch during soaking.
      • Never open the fuel filler cap and perform refueling during soaking.
    4. Turn ignition switch ON and wait at least 190 seconds.
    5. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    DTC Diagnosis Procedure 

    NO

    INSPECTION END

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