A6 Quattro Wagon V6-3.2L (BKH) (2006)
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Check the pump/valve unit, it may not make contact with other components (noises).
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After bleeding the coolant circuit, connect the connectors - D - to the Left Heat Regulation Valve (N175) and Right Heat Regulation Valve
(N176), and - E - to the coolant pump Coolant Pump (V50).
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Evacuate refrigerant circuit and refill it.
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After filling the refrigerant circuit, check the refrigerant line connection points in the plenum chamber and evaporator for leaks, e.g. using an
electronic leak detector.
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Clean coolant residue from the plenum chamber.
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Install the remaining removed components again in reverse order.
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Check the DTC memory for the Climatronic Control Module (J255) A/C control head and erase any faults displayed if necessary.
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Perform a basic setting and output diagnostic test mode on the A/C system.
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Operate the A/C system after filling the refrigerant circuit => [ A/C System, Operating after Filling Refrigerant Circuit ] See: Description and
Operation/A/C System, Operating after Filling Refrigerant Circuit