Diagnostic Procedure

Check Ground Connections
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.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness connector.
  
  Fig 1: Locating Accelerator Pedal Position (APP) Sensor
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 6 and ground with CONSULT-II or tester.
  
  Fig 2: Testing APP 1 Reference Voltage
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Voltage: Approximately 5V
OK or NG
1. OK: Go to 4.
2. NG: Go to 3.
Detect Malfunctioning Part
Check the following.
- Harness connectors E211, M41
- Harness for open or short between ECM and accelerator pedal position sensor
1. Repair open circuit or short to ground or short to power in harness or connectors.
Check APP Sensor 1 Ground Circuit For Open And Short
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 3 and ECM terminal 82.
  Refer to wiring diagram. See WIRING DIAGRAM .
  1. Continuity should exist .
4. Also check harness for short to ground and short to power.
OK or NG
1. OK: Go to 6.
2. NG: Go to 5.
Detect Malfunctioning Part
Check the following.
- Harness connectors E211, M41
- Harness for open or short between ECM and accelerator pedal position sensor
1. Repair open circuit or short to ground or short to power in harness or connectors.
Check APP Sensor Input Signal Circuit For Open And Short
1. Check harness continuity between ECM terminal 106 and APP sensor terminal 5.
  Refer to wiring diagram. See Figure.
  1. Continuity should exist .
2. Also check harness for short to ground and short to power.
OK or NG
1. OK: Go to 8.
2. NG: Go to 7.
Detect Malfunctioning Part
Check the following.
- Harness connectors E211, M41
- Harness for open or short between ECM and accelerator pedal position sensor
1. Repair open circuit or short to ground or short to power in harness or connectors.
Check APP Sensor
Refer to COMPONENT INSPECTION .

OK or NG
1. OK: Go to 10.
2. NG: Go to 9.
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 .
1. Inspection end
Check Intermittent Incident
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .
1. Inspection end