Q: How to service the Throttle Position Sensor on Scion xA?
A: In order to service Throttle Position Sensor, all we have to do is to disconnect the negative battery terminal and wait 90 seconds. Take out throttle body and unscrew sensor. Install the sensor using 2 screws at a torque of 2.0 N. m and reconnect throttle body and battery cable. Initialise where necessary.