Test NTC-7A: Checking Throttle Position Sensor Calibration
NOTE:
Perform TEST NTC-1A: NO TROUBLE CODES (NTC) TESTS before proceeding.
- Turn ignition on with engine off. Inspect Powertrain Control Module (PCM) connectors and Throttle Position (TP) sensor connector for loose or dirty connections. Using scan tool, read TP sensor voltage. Ensure throttle is closed against throttle stop. If voltage is .9 volts or less, go to next step. If voltage is more than .9 volts, replace TP sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .
- While observing voltage on scan tool, slowly open throttle to Wide Open Throttle (WOT). If voltage change was smooth, go to next step. If voltage change was not smooth, replace TP sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .
- If voltage was at least 3.4 volts at WOT, TP sensor is functioning properly. Test is complete. If voltage was not at least 3.4 volts at WOT, replace TP sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .