LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1164 (Engine Control System - QG18DE) >> DTC P0444, P0445: EVAP Canister Purge Volume Control Solenoid Valve >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
    3. Turn ignition switch ON.
      Fig 1: Identifying EVAP Canister Purge Volume Control Solenoid Valve Harness Connector
      G00772870Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

    OK or NG 

    1. OK: GO TO  3.
    2. NG: GO TO 2.
      Fig 2: Checking Voltage Between EVAP Canister Purge Volume Control Solenoid Valve Terminal 1 And Ground
      G00772871Courtesy of NISSAN MOTOR CO., U.S.A.
  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
    • Harness for open or short between EVAP canister purge volume control solenoid valve and ECM relay.
      1. Repair harness or connectors.
  3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 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 45 and EVAP canister purge volume control solenoid 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 

    1. OK (With CONSULT-II): GO TO 4.
    2. OK (Without CONSULT-II): GO TO  5.
    3. NG: Repair open circuit or short to ground or short to power in harness or connectors.
  4. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

    With CONSULT-II 

    1. Reconnect all harness connectors disconnected.
    2. Start engine.
    3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening.

    OK or NG 

    1. OK: GO TO  6.
    2. NG: GO TO 5.
      Fig 3: CONSULT-II Display Active Test
      G00772872Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    Refer to COMPONENT INSPECTION .

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Replace EVAP canister purge volume control solenoid valve.
  6. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    1. INSPECTION END 
scientia non olet · About LEMON Manuals