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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 P0340, P0345: CMP Sensor (Phase) >> 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 STARTING SYSTEM

    Turn ignition switch to START position.

    Does the engine turn over? Does the starter motor operate?

    YES 

    GO TO STEP 2  .

    NO 

    Check starting system. (Refer to WORK FLOW (WITH GR8-1200 NI) or WORK FLOW (WITHOUT GR8-1200 NI) .)

  2. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY

    1. Disconnect camshaft position (CMP) sensor (PHASE) harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between CMP sensor (PHASE) harness connector and ground.
      DTC CMP sensor (PHASE) - Voltage (V)
      Bank Connector +
      Terminal
      P0340 1 F87 1 Ground Approx. 5
      P0345 2 F88 1

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    GO TO STEP 3  .

  3. CHECK CMP SENSOR (PHASE) POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.
      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F87 1 F79 92 Existed
      P0345 2 F88 1

    Is the inspection result normal?

    YES 

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

    NO 

    Repair or replace error-detected parts.

  4. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.
      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F87 2 F79 90 Existed
      P0345 2 F88 2
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

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

  5. CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT

    1. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.
      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F87 3 F79 84 Existed
      P0345 2 F88 3 89
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

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

  6. CHECK CAMSHAFT POSITION SENSOR (PHASE)

    Check camshaft position sensor (PHASE). Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    Replace malfunctioning camshaft position sensor (PHASE). Refer to REMOVAL AND INSTALLATION (LH) , REMOVAL AND INSTALLATION (RH) .

  7. CHECK CAMSHAFT (INT)

    Check the following.

    • Accumulation of debris to the signal plate of camshaft rear end
      G04886473Courtesy of NISSAN NORTH AMERICA, INC.
    • Chipping signal plate of camshaft rear end

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to REMOVAL AND INSTALLATION .

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