Circuit Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The throttle position (TP) sensor 1 and the TP sensor 2 are potentiometer type sensors. Both sensor types have the following circuits:
- A 5-volt reference circuit
- A low reference circuit
- A signal circuit
The TP sensor provides the engine control module (ECM) with a signal voltage proportional to the throttle plate movement. The TP sensor 1 signal voltage at closed throttle is near the 5-volt reference and decreases as the throttle plate is opened. The TP sensor 2 signal voltage at closed throttle is near the low reference and increases as the throttle plate is opened. When the control module detects that the TP sensor 1 and the TP sensor 2 signal circuits are out of correlation with each other, DTC P2135 will set.