Throttle Position Sensors

The throttle position (TP) sensors allow the engine control module (ECM) to determine the position and angular rate of change of the throttle blade.

There are two throttle position (TP) sensors located in the electronic throttle. See below for details of the electronic throttle.

If a throttle position (TP) sensor fails, the engine control module (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 throttle position (TP) sensor, the engine will suffer from poor running and throttle response.