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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1430 (Engine Control System) >> DTC P0447: EVAP Canister Vent Control Valve >> Diagnostic Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Do you have CONSULT-II?

    Yes or No

    • Yes: GO TO 2.
    • No: GO TO  3.
  2. CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT 

    With CONSULT-II 

    1. Turn ignition switch ON.
    2. Select "VENT CONTROL/V" in "ACTIVE TEST" mode with CONSULT-II.
    3. Touch "ON/OFF" on CONSULT-II screen.
    4. Check for operating sound of the valve.

      Clicking noise should be heard. 

    OK or NG

    • OK: GO TO  7.
    • NG: GO TO 3.
    Fig 1: Scan Tool Display "Active Test"
    G02401655Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect EVAP canister vent control valve harness connector.
      Fig 2: Disconnecting EVAP Canister Vent Control Valve Harness Connector
      G02401656Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Turn ignition switch ON.
    4. Check voltage between EVAP canister vent control valve terminal 1 and ground with CONSULT-II or tester.
      • Voltage: Battery voltage 

    OK or NG

    • OK: GO TO  5.
    • NG: GO TO 4.
    Fig 3: EVAP Canister Vent Control Valve Terminal 1 & Ground Voltage Test
    G02401657Courtesy of NISSAN MOTOR CO., U.S.A.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E106, B2
    • Harness connectors B43, T1 (Coupe models)
    • Harness connectors B61, T23 (Roadster models)
    • IPDM E/R harness connector E7
    • 15A fuse
    • Harness for open or short between EVAP canister vent control valve and IPDM E/R
      • : Repair open circuit or short to ground or short to power in harness or connectors.
  5. CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2. Refer to WIRING DIAGRAM .
      • Continuity should exist. 
    4. Also check harness for short to ground and short to power.

    OK or NG

    • OK: GO TO  7.
    • NG: GO TO 6.
  6. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors T2, B44 (Coupe models)
    • Harness connectors T22, B60 (Roadster models)
    • Harness connectors B1, M12
    • Harness connectors M72, F102
    • Harness for open or short between EVAP canister vent control valve and ECM
      • : Repair open circuit or short to ground or short to power in harness or connectors.
  7. CHECK RUBBER TUBE FOR CLOGGING 
    1. Turn ignition switch OFF.
    2. Disconnect rubber tube connected to EVAP canister vent control valve.
    3. Check the rubber tube for clogging.

    OK or NG

    • OK: GO TO 8.
    • NG: Clean the rubber tube using an air blower.
  8. CHECK EVAP CANISTER VENT CONTROL VALVE 

    Refer to "COMPONENT INSPECTION ".

    OK or NG

    • OK: GO TO 9.
    • NG: Replace EVAP canister vent control valve.
  9. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    • : INSPECTION END 
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