Throttle Position Sensor

Throttle Position (TP) sensor monitors opening angle of throttle blade. See Fig 1 or Fig 2 . TP sensor will vary output voltage from about 0.5 volt at minimum throttle opening (idle), to about 4.5 volts at Wide Open Throttle (WOT). Engine Control Module/Powertrain Control Module (ECM/PCM) uses this information and other sensor inputs to determine engine operation. In response, ECM/PCM will adjust fuel injection pulse width and ignition timing.

Fig 1: Locating Throttle Position Sensor (2.4L)

Courtesy of CHRYSLER CORP.

Fig 2: Locating Throttle Position Sensor (3.0L)

Courtesy of CHRYSLER CORP.