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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 To P0456 >> DTC P0441: EVAP Control System >> Component Function Check
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Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK

    Without CONSULT-III 

    1. Lift up drive wheels.
    2. Start engine (VDC switch OFF) and warm it up to normal operating temperature.
    3. Turn ignition switch OFF and wait at least 10 seconds.
    4. Turn ignition switch ON.
    5. Turn ignition switch OFF and wait at least 10 seconds.
    6. Start engine and wait at least 70 seconds.
    7. Set voltmeter probes to ECM harness connector terminals as per the following.
      TERMINALS REFERENCE

      ECM
      Connector + -
      Terminal Terminal
      M107 102 (EVAP control system pressure sensor signal) 112
    8. Check EVAP control system pressure sensor value at idle speed and note it.
    9. Establish and maintain the following conditions for at least 1 minute.
      CONDITION REFERENCE

      Air conditioner switch ON
      Headlamp switch ON
      Rear window defogger switch ON
      Engine speed Approx. 3, 000 RPM
      Gear position Any position other than P, N or R
    10. Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (measured at step  8) for at least 1 second.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".