Circuit Description
WARNING: This page is about a different car, the 2002 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
TP sensor is located on throttle body and has 2 variable resistors integral to TP sensor. TP sensor monitors throttle pedal position. ECM determines vehicle driving condition and adjusts throttle valve position accordingly. DTC is set when ECM detects voltage is out of range on VTA or VTA2 circuits. Possible causes are:
- TP sensor circuit is open or shorted.
- Defective TP sensor.
- Defective ECM.