| Checking throttle valve module -J338- |
| The housing for the throttle valve module contains the following components: |
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| Throttle valve drive (electric power control) -G186- (this is an electric motor which is actuated by the engine control unit; it overcomes spring force to open the throttle valve). |
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| Throttle valve drive angle sender 1 (electric power control) -G187- |
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| Throttle valve drive angle sender 2 (electric power control) -G188- |
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| The housing for the throttle valve module must not be opened. |
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| The angle senders take the form of potentiometers (variable resistors). They inform the engine control unit of the position of the throttle valve and are completely independent of each other. |
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| The potentiometers cannot be mechanically adjusted. The settings are made in the Basic setting mode using vehicle diagnostic and service information system -VAS 5052-. |
| Perform adaption of throttle valve module → Chapter. |
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