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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 622 (Engine Control System (DTC/Circuit Diagnosis) (9 Of 17)) >> DTC/Circuit Diagnosis >> DTC P0390: Exhaust Camshaft Position Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EXHAUST CAMSHAFT POSITION (CMP) SENSOR (BANK 2) POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect exhaust CMP sensor (bank 2) harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between exhaust CMP sensor (bank 2) harness connector and ground.

      +

      -

      Voltage

      (Approx.)

      Exhaust CMP sensor (bank 2)

      Connector

      Terminal

      F40

      1

      Ground

      5 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK EXHAUST CMP SENSOR (BANK 2) POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF
    2. Disconnect ECM harness connector.
    3. Check the continuity between exhaust CMP sensor (bank 2) harness connector and ECM harness connector.

      Exhaust CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F40

      1

      F78

      85

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

    Is the inspection result normal?

    YES

    Perform the trouble diagnosis for ECM power supply circuit.

    NO

    Repair or replace error-detected parts.

  3. CHECK EXHAUST CMP SENSOR (BANK 2) GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between exhaust CMP sensor (bank 2) harness connector and ECM harness connector.

      Exhaust CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F40

      2

      F78

      82

      Existed
    4. Also check harness for short to power.

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace error-detected parts.

  4. CHECK EXHAUST CMP SENSOR (BANK 2) INPUT SIGNAL CIRCUIT 
    1. Check the continuity between exhaust CMP sensor (bank 2) harness connector and ECM harness connector.

      Exhaust CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F40

      3

      F78

      75

      Existed
    2. Also check harness for short to power and short to ground.

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace error-detected parts.

  5. CHECK EXHAUST CMP SENSOR (BANK 2) 

    Check exhaust CMP sensor (bank 2). Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Replace exhaust CMP sensor (bank 2). Refer to Exploded View .

  6. CHECK EXHAUST CAMSHAFT (BANK 2) 

    Check the following items:

    • Accumulation of debris to the signal plate exhaust camshaft (bank 2) rear end
      GNSJMBIA0058Z-058Courtesy of NISSAN NORTH AMERICA, INC.
    • Chipping signal plate of camshaft rear end

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Remove debris and clean the signal plate of the camshaft rear end or replace the camshaft. Refer to Exploded View .

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