Diagnosis Procedure

1. CHECK GROUND CONNECTIONS
   1. Turn ignition switch OFF.
   2. Loosen and retighten ground screws on the body.

   Refer to "GROUND INSPECTION ".

   Fig 1: Identifying Body Ground (E9 And E15) And Washer Tank With Fuse And Fusible Link Box

   Courtesy 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 (1) harness connector.
   2. Turn ignition switch ON.
      Fig 2: Identifying Accelerator Pedal Position (APP) Sensor

      Courtesy of NISSAN NORTH AMERICA, INC.
   3. Check voltage between APP sensor terminal 4 and ground with CONSULT or tester.

   Voltage: Approximately 5 V 

   Fig 3: Checking Accelerator Pedal Position Sensor 1 Power Supply Circuit

   Courtesy of NISSAN NORTH AMERICA, INC.

   OK or NG 

   OK: GO TO  7.

   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	Sensor terminal	Reference Wiring Diagram
   47	Throttle position sensor terminal 1	"WIRING DIAGRAM "
   59	Camshaft position sensor (PHASE) terminal 1	"WIRING DIAGRAM "
   83	APP sensor terminal 4	"WIRING DIAGRAM "

   OK or NG 

   OK: GO TO 4.

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

4. CHECK CAMSHAFT POSITION SENSOR (PHASE)

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO 5.

   NG: Replace camshaft position sensor (PHASE). Refer to , "REMOVAL AND INSTALLATION ".

5. CHECK THROTTLE POSITION SENSOR

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO  7.

   NG: GO TO 6.

6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

   Replace the electric throttle control actuator. Refer to , "REMOVAL AND INSTALLATION ".

   INSPECTION END 

7. CHECK APP SENSOR

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO  9.

   NG: GO TO 8.

8. REPLACE ACCELERATOR PEDAL ASSEMBLY

   Replace accelerator pedal assembly. Refer to , "REMOVAL AND INSTALLATION ".

   INSPECTION END 

9. CHECK INTERMITTENT INCIDENT

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

INSPECTION END