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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2388 (Engine Control System - DTCS U1000 To P0159) >> DTC P0075, P0081 IVT Control Solenoid Valve >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect intake valve timing control solenoid valve harness connector.
      Fig 1: Identifying Intake Valve Timing Control Solenoid Valve Harness Connector
      G04895448Courtesy of NISSAN NORTH AMERICA, INC.
    3. Turn ignition switch ON.
    4. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

      Fig 2: Checking Voltage Between Intake Valve Timing Control Solenoid Valve Terminal 2 And Ground
      G04874946Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E2, F32
    • Harness connectors F26, F125 (bank 1)
    • Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
    • Harness for open or short between intake valve timing control solenoid valve and ECM

      Repair harness or connectors.

  3. CHECK INTAKE VALVE TIMING 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 11 (bank 1) or 10 (bank 2) and intake valve timing control solenoid valve terminal 1. 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  5.

    NG: GO TO 4.

  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors F26, F125 (bank 1)
    • Harness for open and short between ECM and intake valve timing control solenoid valve

      Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 6.

    NG: Replace malfunctioning intake valve timing control solenoid valve.

  6. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    INSPECTION END 

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