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Home >> Infiniti >> 2021 >> Q50 Pure, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 6) >> Engine (ECM) >> DTC P1145: Intake Camshaft Position Sensor >> DTC Diagnosis Procedure >> VR30DDTT engine

VR30DDTT engine

  1. CHECK INTAKE CAMSHAFT POSITION (CMP) SENSOR POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect CMP sensor (bank 2) harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between intake CMP sensor (bank 2) harness connector and ground.

      +

      -

      Voltage

      (Approx.)

      Intake CMP sensor (bank 2)

      Connector

      Terminal

      F97

      1

      Ground

      5 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

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

      Intake CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F97

      1

      F143

      60

      Existed

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

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

      Intake CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F97

      2

      F143

      76

      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 2) INPUT SIGNAL CIRCUIT 
    1. Check the continuity between intake CMP sensor (bank 2) harness connector and ECM harness connector.

      Intake CMP sensor (bank 2)

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F97

      3

      F143

      67

      Existed

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

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace error-detected parts.

  5. CHECK INTAKE CMP SENSOR (BANK 2) 

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

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Replace intake CMP sensor (bank 2). Refer to CAMSHAFT : Exploded View .

  6. CHECK INTAKE CAMSHAFT (BANK 2) 

    Check the following items:

    • Accumulation of debris to the signal plate intake camshaft (bank 2) rear end
      GNSJSBIB0445GB-445Courtesy 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 CAMSHAFT : Exploded View .