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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (VK50VE) - FX50 - DTC U0101, U0113, U1003, U1001, U1024 & P006A Through P0133 / P0153 >> DTC P0130, P0150: A/F Sensor 1 >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. 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, confirm that battery voltage is more than 11 V at idle: 

    : GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
    1. Start engine and warm it up to normal operating temperature.
    2. Let engine idle for 2 minutes.
    3. Check 1st trip DTC.

    Is 1st trip DTC detected? 

    YES: Go to "DIAGNOSIS PROCEDURE ".

    NO-1: With CONSULT: GO TO 3.

    NO-2: With GST: GO TO  7.

  3. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION

    With CONSULT 

    1. Start engine and warm it up to normal operating temperature.
    2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT.
    3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication.

    Does the indication fluctuate around 2.2 V? 

    YES: GO TO 4.

    NO: Go to "DIAGNOSIS PROCEDURE ".

  4. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I
    1. Select "A/F SEN1 (B1) P1276" (for DTC P0130) or "A/F SEN1 (B2) P1286" (for DTC P0150) of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT.
    2. Touch "START".
    3. When the following conditions are met, "TESTING" will be displayed on the CONSULT screen:
    ENG SPEED 1, 750 - 3, 200 RPM
    VHCL SPEED SE More than 64 km/h (40 mph)
    B/FUEL SCHDL 1.0 - 8.0 msec
    Selector lever D position

    If "TESTING" is not displayed after 20 seconds, retry from step 2. 

    CAUTION: Always drive vehicle at a safe speed.

    Is "TESTING" displayed on CONSULT screen? 

    YES: GO TO 5.

    NO: Check A/F sensor 1 function again. GO TO  3.

  5. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II

    Release accelerator pedal fully.

    NOTE: Never apply brake when releasing the accelerator pedal.

    Which does "TESTING" change to? 

    COMPLETED: GO TO 6.

    OUT OF CONDITION: Retry DTC CONFIRMATION PROCEDURE. GO TO  4.

  6. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III

    Touch "SELF-DIAG RESULT".

    Which is displayed on CONSULT screen? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".

  7. PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

    With GST 

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

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

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".

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