Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. See Figure .

1. : GO TO 2.

1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
   Fig 1: Identifying Electric Throttle Control Actuator Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester.
   Fig 2: Checking Throttle Position Sensor 2 Power Supply Circuit

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

   OK or NG 

1. OK: GO TO 3.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Check harness continuity between electric throttle control actuator terminal 5 and engine ground.
3. Refer to Wiring Diagram.

   Continuity should exist. 

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

   OK or NG 

1. OK: GO TO  5 .
2. NG: GO TO 4.

Check the following.

• Joint connector-20
• Harness for open or short between electric throttle control actuator and ECM

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

1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 84 and electric throttle control actuator terminal 2.

   Refer to Wiring Diagram.

   Continuity should exist. 

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

   OK or NG 

1. OK: GO TO 6.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to COMPONENT INSPECTION  .

OK or NG 

1. OK: GO TO  8 .
2. NG: GO TO 7.

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

1. : INSPECTION END

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. : INSPECTION END