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Home >> Nissan-Datsun >> 2012 >> Maxima S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0153 >> DTC P0102, P0103: MAF Sensor >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following 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.

      Which DTC is detected? 

      P0102: GO TO 2.

      P0103: GO TO  3.

  2. PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0102
    1. Start engine and wait at least 5 seconds.
    2. Check DTC.

      Is DTC detected? 

      YES: Go to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END

  3. PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-I
    1. Turn ignition switch ON and wait at least 5 seconds.
    2. Check DTC.

      Is DTC detected? 

      YES: Go to "DIAGNOSIS PROCEDURE ".

      NO: GO TO 4.

  4. PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-II
    1. Start engine and wait at least 5 seconds.
    2. Check DTC.

      Is DTC detected? 

      YES: Go to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END



  1. INSPECTION START

    Is it necessary to erase permanent DTC? 

    YES: GO TO  3.

    NO: GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK

    Perform component function check. Refer to "COMPONENT FUNCTION CHECK ".

    NOTE: Use the component function check to check the overall function of the IAT sensor circuit. During this check, a 1st trip DTC might not be confirmed.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Proceed to "DIAGNOSIS PROCEDURE ".

  3. 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.

      TESTING CONDITION: 

      • Before performing the following procedure, do not add fuel. 
      • Before performing the following procedure, check that fuel level is between 1/4 and 4/4. 
      • Before performing the following procedure, confirm that battery voltage is 11 V or more at idle. 

      : GO TO 4.

  4. PERFORM DTC CONFIRMATION PROCEDURE
    1. Start engine and let it idle for 60 minutes.
    2. Move the vehicle to a cool place.
      NOTE: Cool the vehicle in an environment of ambient air temperature between -10°C (14°F) and 35°C (95°F).
    3. Turn ignition switch OFF and soak the vehicle for 12 hours.
      CAUTION: Never turn ignition switch ON during soaking.
      NOTE: The vehicle must be cooled with the food open.
    4. Start engine and let it idle for 5 minutes or more.
      CAUTION: Never turn ignition switch OFF during idling.
    5. Check 1st trip DTC.

      Is 1st trip DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END

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