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

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

OK or NG 

1. OK : GO TO 2.
2. NG : Repair or replace ground connections.

1. Check voltage between ECM terminal 3 and ground under the following conditions with CONSULT-II or tester.
   THROTTLE CONTROL MOTOR RELAY VOLTAGE
   
   

   Ignition switch	Voltage
   OFF	Approximately 0V
   ON	Battery voltage (11 - 14V)

OK or NG 

1. OK : GO TO  9.
2. NG : GO TO 3.
   Fig 2: Identifying Voltage Between Terminal No. 3 & Ground

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

1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 104 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG 

1. OK : GO TO  6.
2. NG : GO TO 4.
   Fig 3: Identifying Voltage Between ECM Terminal 104 And Ground

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

1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E122.
3. Check harness continuity between ECM terminal 104 and IPDM E/R terminal 47. 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 : Repair open circuit or short to ground or short to power in harness or connectors.

1. Disconnect 20A fuse.
2. Check 20A fuse for blown.

OK or NG 

1. OK : GO TO  8.
2. NG : Replace 20A fuse.

1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E119.
3. Check harness continuity between ECM terminal 3 and IPDM E/R terminal 6. 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  8.
2. NG : GO TO 7.

Check the following.

• Harness connectors E2, F32
• Harness for open or short between ECM and IPDM E/R
  1. : Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

OK or NG 

1. OK : Replace IPDM E/R. Refer to "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) ".
2. NG : Repair or replace harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals. Refer to WIRING DIAGRAM .
   ELECTRIC THROTTLE CONTROL ACTUATOR AND ECM TERMINALS CONTINUITY
   
   

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

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

OK or NG 

1. OK : GO TO 10.
2. NG : Repair or replace.
   Fig 4: Identifying Electric Throttle Control Actuator Connector

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

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

OK or NG 

1. OK : GO TO 11.
2. NG : Remove the foreign matter and clean the electric throttle control actuator inside.
   Fig 5: Identifying Location Of Electric Throttle Control Actuator

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

Refer to "COMPONENT INSPECTION ".

OK or NG 

1. OK : GO TO 12.
2. NG : GO TO  13.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

OK or NG 

1. OK : GO TO 13.
2. 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 ".
   1. INSPECTION END