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Home >> Volkswagen >> 1989 >> Vanagon GL Syncro, Van Passenger >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Theory/Operation >> Computerized Engine Controls >> Input Devices >> A/C Compressor Switch
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A/C Compressor Switch

This switch signals the ECU when there is a demand for air conditioning. The ECU then sends a voltage signal to the idle stabilization valve to increase idle speed to compensate for the extra engine load.

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