Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body. Refer to "GROUND INSPECTION  ".
   Fig 1: Loosening And Retightening Ground Three Screws On The Body

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

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.
   Fig 2: Identifying Accelerator Pedal Position (APP) Sensor

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

Fig 3: Checking Voltage Between APP Sensor Terminal 6 And Ground

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

Check the following.

• Harness for short to power and short to ground, between the following terminals.
  ECM TERMINALS REFERENCE
  
  

  ECM terminal	Sensor terminal	Reference Wiring Diagram
  90	APP sensor terminal 6	WIRING DIAGRAM
  49	Refrigerant pressure sensor terminal 1	WIRING DIAGRAM
  68	PSP sensor terminal 1	WIRING DIAGRAM
  48	EVAP control system pressure sensor terminal 3	WIRING DIAGRAM

• ECM pin terminal.

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.

• Refrigerant pressure sensor (Refer to "COMPONENT INSPECTION ".)
• Power steering pressure sensor (Refer to "COMPONENT INSPECTION  ".)
• EVAP control system 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