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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (2 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0520: EOP Sensor >> 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 EOP SENSOR POWER SUPPLY - I

    1. Turn ignition switch OFF.
    2. Disconnect EOP sensor harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between EOP sensor harness connector terminals.
      EOP sensor Voltage
      (Approx.)
      Connector + -
      terminal
      F54 3 1 5 V

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    GO TO STEP 4  .

  2. CHECK EOP SENSOR SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connectors.
    3. Check the continuity between EOP sensor harness connector and ECM harness connector.
      EOP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F54 2 F78 14 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace error-detected parts.

  3. CHECK EOP SENSOR

    Check EOP sensor. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Repair or replace error-detected parts.

  4. CHECK EOP SENSOR POWER SUPPLY - II

    Check the voltage between EOP sensor harness connector terminal and ground.

    + - Voltage
    (Approx.)
    EOP sensor
    Connector Terminal
    F54 3 Ground 5 V

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 5  .

  5. CHECK EOP SENSOR POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connectors.
    3. Check the continuity between EOP sensor harness connector and ECM harness connector.
      EOP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F54 3 F78 18 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    Check sensor power supply 2 circuit. Refer to DIAGNOSIS PROCEDURE .

    NO 

    Repair or replace error-detected parts.

  6. CHECK EOP SENSOR GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between EOP sensor harness connector and ECM harness connector.
      EOP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F54 1 F78 15 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    Repair or replace error-detected parts.

  7. CHECK ECM GROUND CIRCUIT

    Check the continuity between ECM harness connector and ground.

    ECM - Continuity
    Connector Terminal
    E32 147 Ground Existed
    149
    152
    F78 10
    55
    F79 105
    110

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Repair or replace error-detected parts.

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