Circuit Description
WARNING: This page is about a different car, the 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
TP sensor is a 2 variable resistor sensor that monitors throttle opening and TP sensor malfunction. Based on TP sensor signal, ECM determines vehicle driving condition and adjusts air/fuel mixture accordingly. DTC is set when TP sensor VTA and VTA2 circuit voltage is out of range for 2 seconds. Possible causes are:
- Faulty TP sensor.
- Faulty ECM.