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Home >> Nissan-Datsun >> 2021 >> Altima S >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Pr25DD) (DTC/Circuit Diagnosis) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0088: FRP Control System >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC P0088 is displayed with DTC P0090, first perform the trouble diagnosis for DTC P0090.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Description .

    NO

    GO TO 2.

  2. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION:

    • Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
    • Before performing the following procedure, check that the fuel tank is 1/8 full of fuel.

    GO TO 3.

  3. DTC CONFIRMATION PROCEDURE-1 
    1. Check that the fuel tank is 1/8 full of fuel.
    2. Warm up the engine to the normal operating temperature and keep the engine speed at idle for 15 seconds.
      NOTE: Warm up the engine until "COOLANT TEMP/S" on "DATA MONITOR" of CONSULT reaches at least 70 deg. C (158 deg. F).
    3. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to DTC Diagnosis Procedure .

    NO

    GO TO 4.

  4. DTC CONFIRMATION PROCEDURE-2 
    1. Cool the engine until the engine coolant temperature reaches 60 deg. C (140 deg. F) or less.
    2. Start the engine and let it idle at least 40 seconds.
    3. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END