Throttle Position Sensor, Checking

Throttle Position Sensor, Checking

Recommended Special Tools, Workshop Equipment, Testers, Measuring Instruments and Auxiliary Items
- V.A.G 1526 portable multimeter or V.A.G 1715 multimeter
- Adapter set V.A.G 1594
- Wiring diagram

Test Conditions
- The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK

Function
Both the Throttle Position (TP) Sensor -G79- and the Accelerator Pedal Position Sensor 2 -G185- are located at the accelerator pedal and communicate the drivers intentions to the ECM completely independently of each other. Both sensors are integrated into one housing.

Test Sequence

NOTE: When servicing terminals in the harness connector for the Throttle Position (TP) Sensor, use only gold-plated terminals.

- Remove cover in footwell (driver side).
- Disconnect 6-pin connector from Throttle Position (TP) Sensor.
- Switch ignition on.