LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2013 >> FX50 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 Through P0456 >> DTC P0335: CKP Sensor >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  1. 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 2.

      NO: Repair or replace ground connection.

  2. CHECK CRANKSHAFT POSITION SENSOR POWER SUPPLY CIRCUIT-I 
    1. Disconnect crankshaft position (CKP) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between CKP sensor harness connector and ground.
      CKP sensor Ground Voltage (V)
      Connector Terminal
      F2 1 Ground Approx. 5

      Is the inspection result normal? 

      YES: GO TO  8.

      NO: GO TO 3.

  3. CHECK CKP SENSOR POWER SUPPLY CIRCUIT-II 
    1. Turn ignition switch ON.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CKP sensor harness connector and ECM harness connector.
      CKP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F2 1 F111 87 Existed

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair open circuit.

  4. CHECK SENSOR POWER SUPPLY CIRCUIT 

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

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F111 87 CKP sensor F2 1
    91 Camshaft position sensor (bank 1) F84 1
    EVT control position sensor (bank 1) F59 1
    95 Battery current sensor E21 1
    EVAP control system pressure sensor(1) B252 3
    Manifold absolute pressure sensor F65 1
    M160 99 APP sensor 2 (Without ICC) E112 6
    APP sensor 2 (With ICC) E116 3
    (1) Except for Mexico

    Is the inspection result normal? 

    YES: GO TO 5.

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

  5. CHECK COMPONENTS 

    Check the following.

  6. CHECK APP SENSOR 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  12.

    NO: GO TO 7.

  7. REPLACE ACCELERATOR PEDAL ASSEMBLY 
    1. Replace accelerator pedal assembly.
    2. Perform "SPECIAL REPAIR REQUIREMENT ".

      : INSPECTION END

  8. CHECK CKP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between CKP sensor harness connector and ECM harness connector.
      CKP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F2 2 F111 68 Existed
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 9.

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

  9. CHECK CKP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Check the continuity between CKP sensor harness connector and ECM harness connector.
      CKP sensor ECM Continuity
      Connector Terminal Connector Terminal
      F2 3 F111 67 Existed
    2. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 10.

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

  10. CHECK CRANKSHAFT POSITION SENSOR 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 11.

    NO: Replace crankshaft position sensor. Refer to "EXPLODED VIEW ".

  11. CHECK GEAR TOOTH 

    Visually check for chipping signal plate gear tooth.

    Is the inspection result normal? 

    YES: GO TO 12.

    NO: Replace the signal plate.

  12. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

scientia non olet · About LEMON Manuals