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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (2 Of 4)) >> DTC/Circuit Diagnosis >> DTC P0506: ISC System >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC PRIORITY 

    If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Index .

    NO

    GO TO 2.

  2. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    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.

    If the target idle speed is out of the specified value, perform refer to Work Procedure , before conducting DTC Confirmation Procedure.

    TESTING CONDITION:

    • Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
    • Always perform the test at a temperature above -10 deg. C (14 deg. F).

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Start engine and warm it up to normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Start engine and run it for at least 1 minute at idle speed.
    4. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to DTC Diagnosis Procedure .

    NO

    INSPECTION END

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