Throttle Position Sensor (TPS)
NOTE:
Digital voltmeter must be used to check TPS.
- Note location of TPS electrical connector. See Fig 1 . Turn ignition on. Using digital voltmeter, check output voltage at center terminal with throttle plate closed (idle position) and wide open (full throttle).
- With throttle plate closed (idle position), output voltage should be greater than 200 millivolts. With throttle plate wide open (full throttle), output voltage should be less than 4.8 volts.
- Ensure output voltage gradually increases as throttle plate is moved from closed to wide open throttle. If no voltage exists, check for defective wiring circuits or connections. Replace TPS if defective.