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Home >> Infiniti >> 2010 >> FX35 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ35HR) - DTC P0196 Through P0607 >> DTC P0340, P0345: CMP Sensor >> Diagnosis Procedure

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 POWER SUPPLY CIRCUIT-I 
    1. Disconnect CMP sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between CMP sensor harness connector and ground.
      VOLTAGE REFERENCE TABLE

      DTC CMP sensor 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, short to ground or short to power in harness or connectors.

      NO-2: P0345: GO TO  4.

  4. CHECK CMP SENSOR POWER SUPPLY CIRCUIT-II 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CMP sensor harness connector and ECM harness connector.
      CONTINUITY CONDITIONS

      CMP se4sor 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 CMP SENSOR POWER SUPPLY CIRCUIT-III 

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

    CONNECTOR TERMINALS REFERENCE TABLE

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F101 46 Crankshaft position (CKP) sensor F2 1
    F102 64 CMP sensor (bank 2) F18 1
    Exhaust valve timing (EVT) control position sensor (bank 2) F19 1
    Battery current sensor E21 1
    M107 103 Accelerator pedal position (APP) sensor E112 (Without ICC) 6
    E116 (With ICC) 3
    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.

  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 GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CMP sensor harness connector and ECM harness connector.
      CONTINUITY CONDITIONS

      DTC CMP sensor 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 F106, F107
    • Harness for open or short between CMP sensor and ECM

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

  11. CHECK CMP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Check the continuity between CMP sensor harness connector and ECM harness connector.
      CONTINUITY CONDITIONS

      DTC CMP sensor 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 F106, F107
    • Harness for open or short between CMP sensor and ECM

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

  13. CHECK CMP SENSOR 

    Refer to COMPONENT INSPECTION .

    Is the inspection result normal? 

    YES: GO TO  14.

    NO: Replace malfunctioning camshaft position sensor.

  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

      Is the inspection result normal? 

      YES: GO TO  15.

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

      Fig 1: Checking Chipping Signal Plate Of Camshaft Rear End
      G04886473Courtesy of NISSAN MOTOR CO., U.S.A.
  15. CHECK INTERMITTENT INCIDENT 

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

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