Throttle Position Sensor
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. See WIRING DIAGRAMS . Replace TPS if defective.