Circuit Description
WARNING: This page is about a different car, the 2002 Isuzu Trooper. However, it is still accessible from the selected car via links, so may be relevant.
Throttle Position Sensor 1 (TPS1) circuit provides a voltage signal relative to throttle valve position. Throttle valve angle will vary from about 8 percent at closed throttle to about 92 percent at wide open throttle. PCM detects a continuous short to ground or high resistance in either the circuit or sensor.
When DTC sets, PCM will store conditions present when DTC was set as freeze frame data in FAILURE RECORDS data.
PCM will turn MIL off on third consecutive trip cycle during which diagnostic runs and fault is no longer recognized. A history DTC will clear after 40 consecutive trip cycles during which diagnostic runs and fault is no longer recognized. DTC can be cleared with scan tool, or by disconnecting battery voltage feed to PCM.