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Home >> Infiniti >> 2012 >> FX35 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0130 Through P0430 >> DTC P0181: FTT Sensor >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. INSPECTION START

    Is it necessary to erase permanent DTC? 

    YES: GO TO  7.

    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.

      : GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE-I
    1. Turn ignition switch ON and wait at least 10 seconds.
    2. Check 1st trip DTC.

      Is 1st trip DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: GO TO 4.

  4. CHECK ENGINE COOLANT TEMPERATURE

    With CONSULT 

    1. Select "COOLAN TEMP/S" in "DATA MONITOR" with CONSULT.
    2. Check "COOLAN TEMP/S" value.

      "COOLAN TEMP/S" less than 60°C (140°F)? 

      YES: INSPECTION END

      NO: GO TO 5.

  5. PERFORM DTC CONFIRMATION PROCEDURE-II
    1. Cool engine down until "COOLAN TEMP/S" is less than 60°C (140°F).
    2. Wait at least 10 seconds.
    3. Check 1st trip DTC.

      Is 1st trip DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: GO TO 6.

  6. PERFORM COMPONENT FUNCTION CHECK (FOR MALFUNCTION B)

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

    NOTE: Use the component function check to check the overall function of the FTT 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 ".

  7. 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.

      TEST 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 8.

  8. PERFORM DTC CONFIRMATION PROCEDURE B
    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