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Home >> Infiniti >> 2004 >> FX35 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P1111 & P1136 IVT Control Solenoid Valve >> Diagnostic Procedure
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Diagnostic Procedure

  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. See Figure.
    3. Turn ignition switch ON.
    4. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-II or tester.
      Fig 1: Testing Power To Intake Valve Timing Control Solenoid Valve (DVOM)
      G00727529Courtesy of NISSAN MOTOR CO., U.S.A.

      Voltage: Battery voltage 

    OK or NG

    1. OK: Go to  3.
    2. NG: Go to 2.

  2. Detect Malfunctioning Part 

    Check the following.

    • Harness connectors E19, F49
    • Harness connectors F10, F211
    • IPDM E/R harness connector E7
    • Harness for open or short between intake valve timing control solenoid valve and IPDM E/R

    1. 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. See WIRING DIAGRAM .

      Continuity should exist  .

    4. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: Go to  5.
    2. NG: Go to 4.

  4. Detect Malfunctioning Part 

    Check the following.

    • Harness connectors F211, F10
    • Harness for open and short between ECM and intake valve timing control solenoid valve

    1. 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

    1. OK: Go to 6.
    2. NG: Replace intake valve timing control solenoid valve.

  6. Check Intermittent Incident 

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    For wiring diagram, Refer to WIRING DIAGRAM  for CKP sensor (POS), WIRING DIAGRAM  and BANK 2  for CMP sensor (PHASE).

    1. Inspection end