Golf Mk4
Engine control unit
Adapting engine control unit to throttle valve control part
Adapting teaches the engine control unit (with ignition switched on and engine not running) the throttle valve control part stop positions and a comparison graph between throttle valve potentiometer and throttle valve positioner sender. Adapting sequence must be performed if:
Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
Test conditions
Work sequence
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→ Indicated on display: |
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→ Indicated on display: |
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→ Indicated on display: |
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After pressing the Q-key the throttle valve positioner is driven to Min., Max. and some intermediate positions and the relevant throttle valve angles are stored in non-volatile memory. This procedure takes max. 10 seconds. The throttle valve then remains in the start position for a brief period then closes. |
→ Indicated on display: |
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Matching has been performed successfully. To store the values:
Note: If the basic setting of the control unit is interrupted, the cause could be one of the following:
After an interruption the fault "17973" is stored in fault memory. When next switching on ignition the basic setting is automatically performed again.
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