Throttle Position (TP) Sensor
NOTE:
For further TP sensor diagnosis, see SYSTEM/COMPONENT TESTS
or appropriate TESTS W/CODES
article.
- Turn ignition off. Disconnect TP sensor harness connector. Using a DVOM, check resistance between TP sensor terminals No. 2 (ground) and No. 3 (power). See Fig 1 . Resistance should be 700-3000 ohms. If resistance is not as specified, replace TP sensor. If resistance is as specified, go to next step.
- Connect DVOM between TP sensor terminals No. 1 (output) and No. 3 (ground). Open throttle slowly from idle to wide-open throttle position. Resistance should change smoothly in proportion to the throttle valve opening. If resistance does not change smoothly, replace TP sensor.