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Home >> Nissan-Datsun >> 2012 >> Altima SL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptoms) (Qr25DE Except For CALIFORNIA) >> DTC/Circuit Diagnosis >> DTC P0441: EVAP Control System >> Component Function Check
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Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK

    Without CONSULT 

    1. Lift up drive wheels.
    2. Start engine and warm it up to normal operating temperature.
    3. Turn ignition switch OFF, wait at least 10 seconds.
    4. Start engine and wait at least 70 seconds.
    5. Set voltmeter probes to ECM harness connector and ground.
      ECM Ground
      Connector Terminal
      E10 86 (EVAP control system pressure sensor signal) Ground
      Fig 1: Checking Component Function Check
      G08433098Courtesy of NISSAN NORTH AMERICA, INC.
    6. Check EVAP control system pressure sensor value at idle speed and note it.
    7. Establish and maintain the following conditions for at least 1 minute.
      Air conditioner switch ON
      Headlamp switch ON
      Rear window defogger switch ON
      Engine speed Approx. 3, 000 rpm
      Shift lever Any position other than P, N or R
    8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (measured at step  6) for at least 1 second.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: GO TO "DIAGNOSIS PROCEDURE ".