200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
Vacuum Solenoid Valve HVAC: Testing and Inspection
CHECKING
^ Start engine and let idle.
^ Switch A/C On.
^ Push fresh air/recir (REC) button:
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both indicator lamps light.
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fresh air/recirculation flap closes.
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heater valve closes.
^ If not:
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check voltage supply to the Two Way Valve using current flow diagram.
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check vacuum hose routing and operation of vacuum servos.