FixVault

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground three screws on the body. Refer to "GROUND INSPECTION ".
      Fig 1: Locating Body Ground Screws
      G04895412Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO 2.

    NG: Repair or replace ground connections.

  2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT 
    1. Disconnect accelerator pedal position (APP) sensor harness connector.
      Fig 2: Identifying Accelerator Pedal Position (APP) Sensor Harness Connector
      G04911991Courtesy of NISSAN NORTH AMERICA, INC.
    2. Turn ignition switch ON.
    3. Check voltage between APP sensor terminal 2 and ground with CONSULT-II or tester.

      Voltage: Approximately 5V 

      Fig 3: Checking Voltage Between APP Sensor Terminal 2 And Ground
      G04894998Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 3.

  3. CHECK SENSOR POWER SUPPLY CIRCUITS 

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

    ECM TERMINAL REFERENCE CHART

    ECM terminal Sensor terminal Reference Wiring Diagram
    48 EVAP control system pressure sensor terminal 3 WIRING DIAGRAM
    49 Refrigerant pressure sensor terminal 3 WIRING DIAGRAM
    BATTERY CURRENT SENSOR TERMINAL 1  
    68 PSP sensor terminal 3 WIRING DIAGRAM 
    90 APP sensor terminal 2 WIRING DIAGRAM 

    OK or NG 

    OK: GO TO 4.

    NG: Repair short to ground or short to power in harness or connectors.

  4. CHECK COMPONENTS 

    Check the following.

    OK or NG 

    OK: GO TO 5.

    NG: Replace malfunctioning component.

  5. CHECK APP SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO  7.

    NG: GO TO 6.

  6. REPLACE ACCELERATOR PEDAL ASSEMBLY 
    1. Replace accelerator pedal assembly.
    2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
    3. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
    4. Perform "IDLE AIR VOLUME LEARNING ".

    INSPECTION END 

  7. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    INSPECTION END