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Home >> Nissan-Datsun >> 2008 >> Rogue SL, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (MEXICO) >> Component Diagnosis [For MEXICO] >> P0643 Sensor Power Supply >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection E21. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO 2.

    NO: Repair or replace ground connection.

  2. 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.
      TERMINALS VOLTAGE REFERENCE

      APP sensor Ground Voltage
      Connector Terminal
      E110 4 Ground Approx. 5V

    Is the inspection result normal?

    YES: GO TO  7.

    NO: GO TO 3.

  3. CHECK SENSOR POWER SUPPLY CIRCUITS

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

    TERMINALS REFERENCE

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F8 47 Electric throttle control actuator F29 1
    59 CMP sensor (PHASE) F26 1
    E16 83 APP sensor E110 4

    Is the inspection result normal?

    YES: GO TO 4.

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

  4. CHECK COMPONENTS

    Check the following.

    Is the inspection result normal?

    YES: GO TO 5.

    NO: Replace malfunctioning component.

  5. CHECK TP SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO  9.

    NO: GO TO 6.

  6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
    1. Replace electric throttle control actuator.
    2. Go to "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement ".

      INSPECTION END

  7. CHECK APP SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO  9.

    NO: GO TO 8.

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

      INSPECTION END

  9. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END