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Home >> Nissan-Datsun >> 2009 >> Murano LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1550 To P2A03 >> P2138 App Sensor >> Diagnosis Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection E38. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK SENSOR 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 (V)
      Connector Terminal
      E110 4 Ground Approx. 5

      Is the inspection result normal? 

      YES: GO TO 3.

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

  3. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch ON.
    2. Check the voltage between APP sensor harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      APP sensor Ground Voltage (V)
      Connector Terminal
      E110 5 Ground Approx. 5

      Is the inspection result normal? 

      YES: GO TO  7.

      NO: GO TO 4.

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

      APP sensor ECM Continuity
      Connector Terminal Connector Terminal
      E110 5 E16 87 Existed

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair open circuit.

  5. CHECK SENSOR POWER SUPPLY CIRCUIT

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

    ECM TERMINALS REFERENCE

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F8 72 Refrigerant pressure sensor E300 1
    76 CKP sensor (POS) F20 1
    E16 87 APP sensor E110 5
    91 EVAP control system pressure sensor B17 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 GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between APP sensor harness connector and ECM harness connector.
      TERMINAL CONTINUITY REFERENCE

      APP sensor ECM Continuity
      Connector Terminal Connector Terminal
      E110 2 E16 84 Existed
      1 100
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 8.

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

  8. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between APP sensor harness connector and ECM harness connector.
      TERMINAL CONTINUITY REFERENCE

      APP sensor ECM Continuity
      Connector Terminal Connector Terminal
      E110 3 E16 81 Existed
      6 82
    2. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 9.

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

  9. CHECK APP SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  11.

    NO: GO TO 10.

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

      INSPECTION END

  11. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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