Plenum Chamber Refrigerant Line Pass-Through, Removing And Installing: Installing
Install in reverse order of removal and note the following:
-- Check the grommet -C- of the pass-through (-A- or -B-) for damage and correct seating on the pass-through and the opening in the body.
-- Replace all O-rings and coat them with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS and the Parts Information for the correct version.
-- Thoroughly clean the pass-through -D- and the refrigerant lines around the connection area and check for damage.
-- Check the routing of the refrigerant lines after attachment. They must be inserted in the provided brackets in a tension-free manner and must not come in contact with other components.
-- Reinstall the removed components in the reverse order and reattach detached components.
-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit (R134a) or Working with A/C Service Station (R1234ya) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .
-- Switch the ignition on.
-- On vehicles with a high-voltage system (Audi Q7 e-tron), initiate the basic setting of the A/C system through the Thermal Management Control Module -J1024- and activate the power-controlled valves using one of the routines stored there. "Charge/flush the refrigerant circuit stop routine" using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
-- Check the DTC memory for the Front A/C Display Control Head -E87- and, if necessary, delete any displayed errors using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
-- Start the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .