Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.

Refer to "GROUND INSPECTION ".

Fig 1: Identifying Multi-Remote Control Unit And Steering Member

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

OK or NG 

OK: GO TO 2.

NG: Repair or replace ground connections.

Check voltage between ECM terminal 3 and ground under the following conditions with CONSULT-II or tester.

Fig 2: Checking Voltage Between ECM Terminal 3 And Ground

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

OK or NG 

OK: GO TO  10.

NG: GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect throttle control motor relay.
   Fig 3: Identifying Throttle Control Motor Relay And Cooling Fan Relay

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between throttle control motor relay terminals 2, 5 and ground with CONSULT-II or tester.

Voltage: Battery voltage 

Fig 4: Checking Voltage Between Throttle Control Motor Relay Terminals 2, 5 And Ground

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

OK or NG 

OK: GO TO  5.

NG: GO TO 4.

Check the following.

• 15A fuse
• Harness for open or short between throttle control motor relay and battery

  Repair or replace harness or connectors.

1. Disconnect ECM harness connector.
2. Check harness continuity between throttle control motor relay terminal 3 and ECM terminal 3. Refer to WIRING DIAGRAM .

   Continuity should exist. 

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

OK or NG 

OK: GO TO  7.

NG: GO TO 6.

Check the following.

• Harness connectors E61, F38
• Harness for open or short between throttle control motor relay and ECM

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

1. Check continuity between throttle control motor relay terminal 1 and ECM terminal 104.

   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  9.

NG: GO TO 8.

Check the following.

• Harness connectors E125, M94 (2WD models)
• Harness connectors E116, M75 (AWD models)
• Harness for open or short between throttle control motor relay and ECM

  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  13.

NG: Replace throttle control motor relay.

1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Check harness continuity between the following terminals.

   Refer to WIRING DIAGRAM .

   CONTINUITY CHART
   
   

   Electric throttle control actuator terminal	ECM terminal	Continuity
   3	4	Should exist
   	5	Should not exist
   6	4	Should not exist
   	5	Should exist

   Fig 5: 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 11.

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

1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve and the housing.

Fig 6: Identifying Electric Throttle Control Actuator And Throttle Valve

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

OK or NG 

OK: GO TO 12.

NG: Remove the foreign matter and clean the electric throttle control actuator inside.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 13.

NG: GO TO  14.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

OK or NG 

OK: GO TO 14.

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