LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (1 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0075, P0081: IVT Control Solenoid Valve >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX60. 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

    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 intake valve timing control solenoid valve harness connector and ground with CONSULT or tester.
      DTC IVT control solenoid valve Ground Voltage
      Bank Connector Terminal
      P0075 1 F77 1 Ground Battery voltage
      P0081 2 F80 1

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

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

  2. CHECK IVT CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector.
    3. Check the continuity between IVT control solenoid valve harness connector and IPDM E/R harness connector.
      DTC IVT control solenoid valve IPDM E/R Continuity
      Bank Connector Terminal Connector Terminal
      P0075 1 F77 1 F19 59 Existed
      P0081 2 F80 1
    4. Also check harness for short to ground.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace error-detected parts.

  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 the continuity between intake valve timing control solenoid valve harness connector and ECM harness connector.
      DTC IVT control solenoid valve ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0075 1 F77 2 F79 117 Existed
      P0081 2 F80 2 119
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

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

  4. CHECK IVT CONTROL SOLENOID VALVE

    Check the IVT control solenoid valve. Refer to COMPONENT INSPECTION (IVT CONTROL SOLENOID VALVE) .

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Replace IVT control solenoid valve. Refer to EXPLODED VIEW .

  5. CHECK IVT INTERMEDIATE LOCK CONTROL SOLENOID VALVE POWER SUPPLY

    1. Disconnect IVT intermediate lock control solenoid valve harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between IVT intermediate lock control solenoid valve harness connector and ground.
      DTC IVT intermediate lock control solenoid valve Ground Voltage
      Bank Connector Terminal
      P0075 1 F81 1 Ground Battery voltage
      P0081 2 F82 1

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    GO TO STEP 6  .

  6. CHECK IVT INTERMEDIATE LOCK CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector.
    3. Check the continuity between IVT intermediate lock control solenoid valve harness connector and IPDM E/R harness connector.
      DTC IVT intermediate lock control solenoid valve IPDM E/R Continuity
      Bank Connector Terminal Connector Terminal
      P0075 1 F81 1 F19 59 Existed
      P0081 2 F82 1
    4. Also check harness for short to ground.

    Is the inspection result normal?

    YES 

    Perform the trouble diagnosis for power supply circuit.

    NO 

    Repair or replace error-detected parts.

  7. CHECK IVT INTERMEDIATE LOCK CONTROL SOLENOID VALVE GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between IVT intermediate lock control solenoid valve harness connector and ECM harness connector.
      DTC IVT intermediate lock control solenoid valve ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0075 1 F81 2 F79 118 Existed
      P0081 2 F82 2 120
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 8  .

    NO 

    Repair or replace error-detected parts.

  8. CHECK IVT INTERMEDIATE LOCK CONTROL SOLENOID VALVE

    Check the IVT intermediate lock control solenoid valve. Refer to COMPONENT INSPECTION (IVT INTERMEDIATE LOCK CONTROL SOLENOID VALVE) .

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Replace IVT intermediate lock control solenoid valve. Refer to EXPLODED VIEW .

scientia non olet · About LEMON Manuals