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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1165 (Engine Control System - DTCS P0137 To P0448) >> P0340, P0345 CMP Sensor (Phase) >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. 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 2.

    NO: Check starting system. (Refer to "WORK FLOW ").

  2. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection E9. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace ground connection.

  3. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT
    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.
    VOLTAGE SPECIFICATION

    DTC CMP sensor (PHASE) Ground Voltage (V)
    Bank Connector Terminal
    P0340 1 F55 1 Ground Approx. 5
    P0345 2 F60 1
    Fig 1: Checking Voltage Between CKP Sensor (POS) Harness Connector And Ground
    G05869835Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.
      CONTINUITY CHART

      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F55 2 F13 64 Existed
      P0345 2 F60 2 68
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  5. CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.
      CONTINUITY CHART

      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F55 3 F13 70 Existed
      P0345 2 F60 3 69
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  6. CHECK CAMSHAFT POSITION SENSOR (PHASE)

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace malfunctioning camshaft position sensor (PHASE).

  7. CHECK CAMSHAFT (INT)

    Check the following.

    • Accumulation of debris to the signal plate of camshaft rear end
    • Chipping signal plate of camshaft rear end

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Remove debris and clean the signal plate of camshaft rear end or replace camshaft.

    Fig 2: Identifying Signal Plate Of Camshaft Rear End
    G05869836Courtesy of NISSAN MOTOR CO., U.S.A.
  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

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