Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is caught between the throttle valve and the housing.
OK or NG
1. OK: GO TO 2.
2. NG: Remove the foreign matter and clean the electric throttle control actuator inside.
  
  Fig 1: Locating Throttle Valve And Electric Throttle Control Actuator
  Courtesy of NISSAN MOTOR CO., U.S.A.
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