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HOMESERVICE MANUALSINFINITI2013M56 SPORTREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - DTCS P0190 TO P1084DTC P0643: SENSOR POWER SUPPLYDIAGNOSIS PROCEDURE
2013 Infiniti M56 Sport

Diagnosis Procedure

2013 Infiniti M56 SportSECTION Diagnosis Procedure
  1. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT 
    1. Disconnect accelerator pedal position (APP) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between APP sensor harness connector and ground.
      APP sensor Ground Voltage (V)
      Connector Terminal
      M9 (Without ICC) 5 Ground Approx. 5
      M153 (With ICC) 6

      Is the inspection result normal? 

      YES: GO TO  6.

      NO: GO TO 2.

  2. 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 81 Throttle position sensor (bank 1) F66 2
    82 Throttle position sensor (bank 2) F64 2
    83 Camshaft position sensor (bank 2) F83 1
    85 Manifold absolute pressure sensor F19 1
    M160 5 APP sensor 1 (Without ICC) M9 5
    6 APP sensor 1 (With ICC) M153 6

    Is the inspection result normal? 

    YES: GO TO 3.

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

  3. CHECK COMPONENTS 

    Check the following.

  4. CHECK THROTTLE POSITION SENSOR 

    Refer to "COMPONENT INSPECTION (THROTTLE POSITION SENSOR) ".

    Is the inspection result normal? 

    YES: GO TO  8.

    NO: GO TO 5.

  5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 

    Replace electric throttle control actuator. Refer to "REMOVAL AND INSTALLATION ".

    : INSPECTION END

  6. CHECK ACCELERATOR PEDAL POSITION SENSOR 

    Refer to "COMPONENT INSPECTION (ACCELERATOR PEDAL POSITION SENSOR) ".

    Is the inspection result normal? 

    YES: GO TO  8.

    NO: GO TO 7.

  7. REPLACE ACCELERATOR PEDAL ASSEMBLY 

    Replace accelerator pedal assembly.

    Refer to "MODELS WITHOUT DISTANCE CONTROL ASSIST SYSTEM: REMOVAL AND INSTALLATION " (Without distance control assist system).

    Refer to "MODELS WITH DISTANCE CONTROL ASSIST SYSTEM: REMOVAL AND INSTALLATION " (With distance control assist system).

    : INSPECTION END

  8. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.