Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. Check throttle body (throttle actuator) (see  THROTTLE BODY  ). 
   1. NG: Replace throttle body. 
   2. OK: Go To Next Step 
2. Check for open and short in wire harness between throttle actuator and ECM (see  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
   1. NG: Repair or replace harness and connector. 
   2. OK: Go To Next Step 
3. Inspect throttle body (Visually check throttle valve). 

   CHECK: 

   1. Check for foreign objects between the throttle valve and the housing.
   2. Also, check if the valve can open and close smoothly.
   1. NG: Remove foreign objects and clean throttle body. 
   2. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ).