Throttle Body: Testing and Inspection

Throttle Body Test

Carbon Accumulation Check




1. Connect the HDS to the data link connector (DLC) (A) located behind under the driver's side of the front console.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the ECM. If it doesn't, go to the DLC circuit troubleshooting.
4. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.
5. Check the REL TP SENSOR in the DATA LIST the HDS. The reading should be below 2.46 degree If it is not, clean the throttle body.

Throttle Position Learning Check




1. Connect the HDS to the data link connector (DLC) (A) located behind under the driver's side of the front console.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the ECM. If it doesn't, go to the DLC circuit troubleshooting.
4. Select the INSPECTION MENU with the HDS.
5. Do the TP LEARNING CHECK in the ETCS TEST. If needed, clean the throttle body.