porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Ambient Temperature Sensor / Switch HVAC > < Diagram Information and Instructions|Page 1705
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Air Conditioning Switch: Description and Operation

PURPOSE

A/C switch provides fuel injection ECU with "A/C ON" information.  ECU uses this to calculate correct idle speed.

OPERATION

The A/C relay will send a signal to the ECU when the relay is engaged (A/C switch is turned on).  

Ambient Temperature Sensor / Switch HVAC > < Diagram Information and Instructions|Page 1705