Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
  Refer to "GROUND INSPECTION ".
  
  Fig 1: Identifying Body Ground Screws
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  OK or NG
  
  OK: GO TO 2.
  
  NG: Repair or replace ground connections.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

Disconnect electric throttle control actuator harness connector.
- Illustration shows the view with intake air duct removed.
Disconnect ECM harness connector.

Check harness continuity between the following terminals.

Refer to WIRING DIAGRAM .

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

Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 3.

NG: Repair or replace.

Fig 2: Identifying Electric Throttle Control Actuator
Courtesy of NISSAN NORTH AMERICA, INC.

CHECK THROTTLE CONTROL MOTOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 4.

NG: GO TO 5.
CHECK INTERMITTENT INCIDENT
Refer to "HOW TO CHECK TERMINAL " and "INTERMITTENT INCIDENT ".

OK or NG

OK: GO TO 5.

NG: Repair or replace harness or connectors.
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