Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to , "GROUND INSPECTION ".
   Fig 1: Locating Body Ground Screws E24, E15, F9 And E133

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

OK or NG 

OK : GO TO 2.

NG : Repair or replace ground connections.

1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
   Fig 2: Locating Intake Air Temperature Sensor & Mass Air Flow Sensor

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between APP sensor terminal 7 and ground with CONSULT-II or tester.

   Voltage: Approximately 5V 

OK or NG 

OK : GO TO 3.

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

Fig 3: Checking Voltage Between APP Sensor Terminal 7 And Ground

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

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 82 and APP sensor terminal 1.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

4. Also check harness for short to ground and short to power.

OK or NG 

OK : GO TO 4.

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

1. Check harness continuity between ECM terminal 106 and APP sensor terminal 2.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

2. Also check harness for short to ground and short to power.

OK or NG 

OK : GO TO 5.

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

Refer to , "COMPONENT INSPECTION ".

OK or NG 

OK : GO TO  7.

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 ".

   : INSPECTION END 

Refer to , "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END