A3 Quattro V6-3.2L (CBRA) (2009)
Control Assembly: Testing and Inspection
Fresh/Recirculating Air Door Motor and Fresh Air Button, Checking
Fresh/recirculating air button installed in Heater Control Module (J65)
‹› Recirculating air mode may result in windows fogging up (moisture in air increases in passenger compartment and then condenses on windows,
there is no air dehumidification as for vehicles with A/C system).
‹› The function "recirculating air mode" is cancelled by switching off ignition. After switching ignition on again, Fresh/Recirculating Air Door Motor
(V154) is activated by heater control module (J65) and heater switches from recirculating air mode to fresh air mode (when recirculating air mode
was selected beforehand).
‹› So that fogged windows are defogged as rapidly as possible, only restricted recirculating air mode is possible when rotary switch for air
distribution - B - is located in "air to front windshield"- D -. The Heater Control Module (J65) switches, for example, to fresh air mode after the
rotary switch is turned into this position (and the LED in the button goes out).
‹› Make sure the fresh/recirculating air button - F - and the Fresh/Recirculating Air Door Motor (V154) work correctly. Refer to => [
Fresh/Recirculating Air Door Motor, Checking ] See: Air Door/Air Door Actuator / Motor/Testing and Inspection.
Special tools, testers and auxiliary items required
‹› Voltage Tester (V.A.G 1527 B)
‹› Check the Fresh/Recirculating Air Door Motor (V154 ). Refer to=> [ Fresh/Recirculating Air Door Motor, Checking ] See: Air Door/Air Door
Actuator / Motor/Testing and Inspection
‹› Check the Heater Control Module (J65) and the Fresh/Recirculating Air Door Motor (V154). Refer to => [ Heater Control Module, Checking ]
See: Control Module HVAC/Testing and Inspection/Heater Control Module, Checking