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Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P0137 To P0448 >> P0340, P0345 CMP Sensor (Phase) >> Diagnosis Procedure
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Diagnosis Procedure

  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 M95. 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-I
    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 SPECIFICATIONS

      DTC CMP sensor (PHASE) Ground Voltage (V)
      Bank Connector Terminal
      P0340 1 F5 1 Ground Approx. 5
      P0345 2 F18 1

    Is the inspection result normal? 

    YES: GO TO  9.

    NO-1: P0340: Repair open circuit or short to ground or short to power in harness or connectors.

    NO-2: P0345: GO TO 4.

  4. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT-II
    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 SPECIFICATIONS

      CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      2 F18 1 F102 64 Existed

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Repair open circuit.

  5. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT-III

    Check harness for short to power and short to ground, between the following terminals.

    CONTINUITY SPECIFICATIONS

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F101 46 CKP sensor (POS) F2 1
    F102 64 CMP sensor (PHASE) (bank 2) F18 1
    EVT control position sensor (bank 2) F19 1
    Battery current sensor E21 1
    M107 103 APP sensor E112 6
    107 EVAP control system pressure sensor B252 3
    111 Refrigerant pressure sensor E77 3

    Is the inspection result normal? 

    YES: GO TO 6.

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

  6. CHECK COMPONENTS

    Check the following.

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace malfunctioning component.

  7. CHECK APP SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  15.

    NO: GO TO 8.

  8. REPLACE ACCELERATOR PEDAL ASSEMBLY
    1. Replace accelerator pedal assembly.
    2. Go to "SPECIAL REPAIR REQUIREMENT ".

      INSPECTION END

  9. 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 SPECIFICATIONS

      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F5 2 F102 96 Existed
      P0345 2 F18 2 92
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO  11.

    NO: GO TO 10.

  10. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F107, F106
    • Harness for open or short between CMP sensor (PHASE) and ECM

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

  11. 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 SPECIFICATIONS

      DTC CMP sensor (PHASE) ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0340 1 F5 3 F102 59 Existed
      P0345 2 F18 3 63
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO  13.

    NO: GO TO 12.

  12. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F107, F106
    • Harness for open or short between CMP sensor (PHASE) and ECM

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

  13. CHECK CAMSHAFT POSITION SENSOR (PHASE)

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 14.

    NO: Replace malfunctioning camshaft position sensor (PHASE).

  14. CHECK CAMSHAFT (INT)

    Check the following.

    • Accumulation of debris to the signal plate of camshaft rear end
    • Chipping signal plate of camshaft rear end
    Fig 1: Checking Camshaft (Intake)
    G04886473Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 15.

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

  15. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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