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Checking electronic engine power control (electronic throttle)
Checking throttle valve control unit
The following components are located in the housing of the throttle valve control unit.
(this housing must not be opened):
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‒ Throttle valve drive - G186 (This is an electric motor which is activated by the engine control unit. This electric motor opens the throttle valve against the force of a spring).
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‒ Angle sender for throttle valve drive -G187
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‒ Angle sender 2 for throttle valve drive -G188
Note:
The angle senders are in the form of potentiometers (variable resistances). They provide the position of the throttle valve to the engine control unit completely independently of one another (redundant system).
The potentiometers cannot be adjusted mechanically. The settings are performed as part of the basic setting (function 04) using the V.A.G 1551 or 1552 fault reader.
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