Audi Workshop Service and Repair Manuals

The sensor for the throttle valve actuator (G127) informs the engine control unit of the position of the throttle valve actuator (V60).

• ‒ Read measured value block, Display Group 98, engine at idling speed

• ‒ Check readout in display zone 2.

• Specified result: 0.500...4.900 V

If specified result is not attained:

• ‒ Switch off ignition.

• ‒ → Disconnect the connector from the throttle valve control unit.
• ‒ Connect the V.A.G 1598/22 test box to the wiring harness for the engine control unit.
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The following wiring connections should be checked for open circuits and/or short to positive or negative.

• ‒ Rectify short circuit or open circuit if necessary.

If no fault is detected in the wiring:

• ‒ Renew the throttle valve control unit (J338).