Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
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.
- Check throttle body (throttle actuator) (see ON-VEHICLE INSPECTION
).
- NG : Replace throttle body.
- OK : Go to next step.
- Check for open and short in wire harness between throttle actuator and ECM (see HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
in INTRODUCTION article).
- NG : Repair or replace harness and connector.
- OK : Go to next step.
- Inspect throttle body (Visually check throttle valve).
CHECK:
- Check for foreign objects between the throttle valve and the housing.
- Also, check if the valve can open and close smoothly.
- NG : Remove foreign objects and clean throttle body.
- OK : Replace ECM (see COMPONENTS ).