Diagnostic Procedure

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
  Refer to , "GROUND INSPECTION ".
  
  Fig 1: Locating M57, M61 & F14 Body Ground Screws
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : GO TO 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 2: Disconnecting 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.
  Voltage: Approximately 5V
OK or NG

OK : GO TO 7.

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 .
  
  Continuity should exist.
OK or NG

OK : GO TO 4.

NG : Repair 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.

TERMINAL REFERENCE

ECM terminal	Sensor terminal	Reference Wiring Diagram
47	Electric throttle control actuator terminal 1	WIRING DIAGRAM
91	APP sensor terminal 1	WIRING DIAGRAM

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

OK : GO TO 11.

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 ".
  : 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 .
  
  Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG

OK : GO TO 8.

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 .
  
  Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG

OK : GO TO 9.

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

OK : GO TO 11.

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 ".
  : INSPECTION END
CHECK INTERMITTENT INCIDENT
Refer to , "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END