Throttle Position Sensor (TPS)

WARNING: This page is about a different car, the 2019 Jaguar XJ and 2018 Jaguar XJ. However, it is still accessible from the selected car via links, so may be relevant.

The Throttle Position Sensor (TPS) allows the ECM to determine the position and angular rate of change of the throttle blade.

There are two TPS located in the electric throttle. See below for details of the electric throttle.

If a TPS fails, the ECM:

Adopts a limp home mode where engine speed is limited to a maximum of approximately 2000 rev/min
Discontinues evaporative emissions control
Discontinues closed loop control of engine idle speed.

With a failed TPS, the engine will suffer from poor running and throttle response.