RS 6 V8-4.2L Turbo (BCY) (2003)
Electronic Throttle Control Module: Component Tests and General Diagnostics
Throttle Valve Control Module -J338-, Checking
The following components are accommodated in the housing of the throttle valve control module:
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Throttle valve drive -G186- (this is an electric motor actuated by the engine control module which opens the throttle valve by overcoming a spring
force)
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Angle sensor 1 for throttle valve drive -G187-
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Angle sensor 2 for throttle valve drive -G188-
NOTE:
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The housing of the throttle valve control module is not to be opened.
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The angle sensors take the form of potentiometers (variable resistors). They provide the engine control module with an independent indication of
the throttle valve position.
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The potentiometers cannot be mechanically adjusted. Settings are made as part of basic setting (function 04) using the vehicle diagnostic, testing
and information system VAS 5051.