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Home >> Infiniti >> 2012 >> M35h >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTCS U0101 To P014F >> DTC P014C, P014D, P014E, P014F: A/F Sensor 1 >> Component Function Check
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Component Function Check

  1. CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

    ◦ With CONSULT

    1. Clear the mixture ratio self-learning value. Refer to "WORK PROCEDURE ".
    2. Run engine for at least 10 minutes at idle speed.

    ⓧ Without CONSULT

    1. Clear the mixture ratio self-learning value. Refer to "WORK PROCEDURE ".
    2. Perform "INSPECTION MODE 5". Refer to "DESCRIPTION ".
    3. Run engine for at least 10 minutes at idle speed.

      Is idle speed stabilizing? 

      YES: GO TO 2.

      NO: Repair the malfunctioning cause. Then GO TO 2. Refer to "SYMPTOM TABLE ".

  2. PERFORM DTC CONFIRMATION PROCEDURE
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Perform "INSPECTION MODE 5". Refer to "DESCRIPTION ".
    3. Start engine and keep the engine speed at 3, 000 RPM for at least 1 minutes under no load.
    4. Let engine idle for 1 minute.
    5. Keep the engine speed at 3, 000 RPM for at least 10 seconds
    6. Fully release accelerator pedal and then let engine idle for about 10 seconds.
    7. Check 1st trip DTC.

      Is 1st trip DTC detected? 

      YES: Go to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END