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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (VK50VE) - FX50 - DTC U0101, U0113, U1003, U1001, U1024 & P006A Through P0133 / P0153 >> DTC P0075, P0081: IVT Control Solenoid Valve >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect intake valve timing (IVT) control solenoid valve harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between IVT control solenoid valve harness connector and ground.
    DTC IVT control solenoid valve Ground Voltage
    Bank Connector Terminal
    P0075 1 F47 2 Ground Battery voltage
    P0081 2 F61 2

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: GO TO 2.

  2. DETECT MALFUNCTIONING PART

    Check the following:

    • Harness connectors E10, F10
    • Harness for open or short between IVT control solenoid valve and IPDM E/R

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

  3. CHECK IVT CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between IVT control solenoid valve harness connector and ECM harness connector.
      DTC IVT control solenoid valve ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0075 1 F47 1 F111 51 Existed
      P0081 2 F61 1 52
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  4. CHECK IVT CONTROL SOLENOID VALVE

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace malfunctioning IVT control solenoid valve. Refer to "EXPLODED VIEW ".

  5. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END