Circuit Description
WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
The throttle position (TP) sensor is used by the engine control module (ECM) to determine the throttle plate angle for various engine management systems. The TP sensor is a potentiometer type sensor with three circuits:
- A 5-volt reference circuit
- A low reference circuit
- A TP sensor signal circuit
The ECM provides the TP sensor with 5 volts on the 5-volt reference circuit, and a ground on the low reference circuit. Rotation of the TP sensor rotor from the closed throttle position to the wide open throttle (WOT) position provides the ECM with a signal voltage from below 1 volt to greater than 4 volts through the TP sensor signal circuit. If the ECM detects an intermittent excessively low signal voltage, DTC P1122 sets.