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4.5 - Throttle Position Sensor Replacement ( )

Gain access to the throttle body, as described in 4.3 above, and locate the TPS. It is a square black plastic unit, mounted on the end of the throttle shaft with a three wire electrical multi-plug.

Disconnect the multi-plug, undo the securing screws starting with the one at the front of the engine, remove the retaining plate and then the sensor itself.

When refitting, ensure the sensor engages correctly on the spindle. The sensor is spring loaded and must be turned slightly to then refit the retaining plate and fit the securing screw towards the rear of the engine. Don't fully tighten. Fit the front securing screw, then tighten the rear screw. Refit the connector.

At this stage, the Jaguar workshop manual says that the ECU must be reset to work with the new sensor. This is probably to allow it to understand the characteristics of the sensor at idle and full throttle opening and therefore not required if replacing the same sensor.


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