Carbon Accumulation Check
- Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
- Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
- Check the REL TP SENSOR in the DATA LIST with the HDS. The reading should be below 2.4°. If it is not, clean the throttle body (see THROTTLE BODY CLEANING ).