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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 360 (Engine Control System (DTC/Circuit Diagnosis) (11 Of 17)) >> DTC/Circuit Diagnosis >> DTC P1140: Intake Camshaft Position Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INTAKE CAMSHAFT POSITION (CMP) SENSOR (BANK 1) POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect CMP sensor (bank 1) harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between intake CMP sensor (bank 1) harness connector and ground.

      +

      -

      Voltage

      (Approx.)

      Intake CMP sensor (bank 1)

      Connector

      Terminal

      F113

      1

      Ground

      5 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

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

      Intake CMP sensor (bank 1)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F113

      1

      F78

      36

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

      Intake CMP sensor (bank 1)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F113

      2

      F78

      29

      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 INTAKE CMP SENSOR (BANK 1) INPUT SIGNAL CIRCUIT 
    1. Check the continuity between intake CMP sensor (bank 1) harness connector and ECM harness connector.

      Intake CMP sensor (bank 1)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F113

      3

      F78

      26

      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 INTAKE CMP SENSOR (BANK 1) 

    Check intake CMP sensor (bank 1). Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Replace intake CMP sensor (bank 1). Refer to Exploded View .

  6. CHECK INTAKE CAMSHAFT (BANK 1) 

    Check the following items:

    • Accumulation of debris to the signal plate intake camshaft (bank 1) rear end
      GNSJSBIB0431GB-431Courtesy 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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