Diagnosis Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten engine screw on the body.

   Refer to "GROUND INSPECTION ".

   Fig 1: Identifying Ground Connections Components

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

   OK or NG 

   OK : GO TO 2.

   NG : Repair or replace ground connections.

1. Disconnect electric throttle control actuator (1) harness connector.
   • <== : Vehicle front
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.

   Refer to Wiring Diagram.

   CONTINUITY REFERENCE CHART
   
   

   Electric throttle control actuator terminal	ECM terminal	Continuity
   5	1	Should not exist.
   	4	Should exist.
   6	1	Should exist.
   	4	Should not exist.

   Fig 2: Identifying Electric Throttle Control Actuator Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Also check harness for short to ground and short to power.

   OK or NG 

   OK : GO TO 3.

   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 4.

NG : GO TO  5.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG 

OK : GO TO 5.

NG : Repair or replace harness or connectors.

1. Replace the electric throttle control actuator.
2. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
3. Perform "IDLE AIR VOLUME LEARNING ".

   INSPECTION END