Diagnostic Procedure

Check Ground Connections
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See Figure .
  Refer to GROUND INSPECTION .
OK or NG
1. OK: go to 2 .
2. NG: Repair or replace ground connections.
Check Throttle Position Sensor 2 Power Supply Circuit-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
  
  Fig 1: Locating Electric TPS Motor & Throttle Control Actuator
  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 Voltage At Electric Throttle Control Actuator Terminal 1 (W/DVOM)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Voltage: Approximately 5V
OK or NG
1. OK: go to 7 .
2. NG: go to 3 .
Check Throttle Position Sensor 2 Power Supply Circuit-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47.
  Refer to wiring diagram. See Figure .
  1. Continuity should exist .
OK or NG
1. OK: go to 4 .
2. NG: Repair or replace open circuit.

Check Throttle Position Sensor 2 Power Supply Circuit-III

Check harness for short to power and short to ground, between the following terminals.

ECM TERMINAL 47 & 91 SPECIFICATIONS

ECM Terminal	Sensor Terminal	See
47	Electronic Throttle Control Actuator Terminal 1	Figure
91	APP Sensor Terminal 4	Figure

OK or NG

OK: go to 5 .
NG: Repair short to ground or short to power in harness or connectors.

Check APP Sensor
Refer to COMPONENT INSPECTION .

OK or NG
1. OK: go to 11 .
2. NG: go to 6 .
Replace Accelerator Pedal Assembly
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 .
  1. Inspection end
Check Throttle Position Sensor 2 Ground Circuit For Open And Short
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 5 and ECM terminal 66. Refer to wiring diagram. See Figure .
  1. 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: Repair open circuit or short to ground or short to power in harness or connectors.
Check Throttle Position Sensor 2 Input Signal Circuit For Open And Short
1. Check harness continuity between ECM terminal 69 and electric throttle control actuator terminal 2. Refer to wiring diagram. See Figure .
  1. Continuity should exist .
2. Also check harness for short to ground and short to power.
OK or NG
1. OK: go to 9 .
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
Check Throttle Position Sensor
Refer to COMPONENT INSPECTION .

OK or NG
1. OK: go to 11 .
2. NG: go to 10 .
Replace Electric Throttle Control Actuator
1. Replace the electric throttle control actuator.
2. Perform THROTTLE VALVE CLOSED POSITION LEARNING .
3. Perform IDLE AIR VOLUME LEARNING .
  1. Inspection end
Check Intermittent Incident
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .
1. Inspection end