A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Ambient Temperature Sensor / Switch HVAC: Service and Repair
Fresh Air Intake Duct Temperature Sensor
Fresh Air Intake Duct Temperature Sensor
Removing
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Switch off ignition.
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Remove the plenum chamber cover.
CAUTION!
Even when the engine is cold, both pump/valve unit valves can be hot.
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Remove the windshield wiper arm and cowl panel trim
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If necessary, remove the dome brace (not present in all vehicles).
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Remove the air intake unit upper cover => [ Air Intake Unit Upper Cover ] See: Air Duct/Service and Repair/Air Intake Unit Upper Cover.
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Disconnect connector - A - from temperature sensor - B -.
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Rotate temperature sensor - B - 90° in the direction of the arrow and remove it from the intake housing.
Installing
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Install the temperature sensor - B -.
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Connect the connector - A - on the temperature sensor - B -.
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Before installing the air intake unit upper cover, make sure the connector - A - is seated correctly and the cable is routed correctly.
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Install the removed components again in reverse order.
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Check DTC memory of A/C control head Climatronic Control Module (J255) and erase malfunctions displayed if necessary. => Vehicle diagnosis,
testing and information system VAS 5051