Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See Figure .

   Refer to GROUND INSPECTION  .

OK or NG

1. OK: go to 2.
2. NG: Repair or replace ground connections.

1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 6 and ground with CONSULT-II or tester.
   1. Voltage: Approximately 5V 

OK or NG

1. OK: go to 5.
2. NG: go to 3.

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

Fig 1: Identifying Sensors Associated With ECM Terminals Likely To Have Shorts To Ground Or Power

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

1. OK: go to 4.
2. NG: Repair short to ground or short to power in harness or connectors.

Check the following.

• Mass air flow sensor. Refer to COMPONENT INSPECTION  .
• EVAP control pressure sensor. Refer to COMPONENT INSPECTION  .
• Refrigerant pressure sensor. Refer to REFRIGERANT PRESSURE SENSOR .
• Power steering pressure sensor.. Refer to COMPONENT INSPECTION  .

OK or NG

1. OK: go to 7.
2. NG: Replace malfunctioning component.

Refer to COMPONENT INSPECTION  .

OK or NG

1. OK: go to 7.
2. NG: go to 6.

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  .
   1. Inspection end 

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. Inspection end