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Home >> Nissan-Datsun >> 2021 >> Sentra SR >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0127: IAT Sensor >> Confirmation Procedure

Confirmation Procedure

  1. 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:

    This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL With CONSULT

    1. Wait until engine coolant temperature is less than 96 deg. C (205 deg. F)
      1. Turn ignition switch ON.
      2. Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
      3. Check the engine coolant temperature.
      4. If the engine coolant temperature is not less than 96 deg. C (205 deg. F), turn ignition switch OFF and cool down engine.
        NOTE: Perform the following steps before engine coolant temperature is above 96 deg. C (205 deg. F).
    2. Turn ignition switch ON.
    3. Select "DATA MONITOR" mode of "ENGINE" using CONSULT
    4. Start the engine.
    5. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds.
      CAUTION: Always drive vehicle at a safe speed.
    6. Check 1st trip DTC.

    SYMBOL With GST

    Follow the procedure "With CONSULT" above.

    Is 1st trip DTC detected?

    YES

    Proceed to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END