REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING, Vehicles with 2.0L Hybrid: Installing

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Installation is done is reverse order, observe the following:

NOTE:

Electrical connections and routing. Refer to the appropriate SYSTEM WIRING DIAGRAM.

-- Thoroughly clean all the connections in the expansion valve -B- and in the refrigerant line -D- with the inner heat exchanger.

Fig 1: Checking Connections In Expansion Valve -B- And On Refrigerant Line -D-

Courtesy of AUDI OF AMERICA, LLC

-- Check the connections in the expansion valve -B- and on the refrigerant line -D- for damage.

-- Replace the quick-coupling connections on the refrigerant line with inner heat exchanger. Refer to REFRIGERANT LINES, DISCONNECTING FROM QUICK-RELEASE COUPLINGS AND CONNECTING .

-- Replace the O-rings -A- and -C-. Allocate correct version.

NOTE:

Follow the instructions for installing the O-rings. Refer to REFRIGERANT CIRCUIT SEALS .

-- Coat the O-ring seals lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .

-- Make sure the O-rings fit properly in the grooves on the refrigerant line refrigerant line connections -D-.

-- Tighten the bolts -E- for the refrigerant line -D- with inner heat exchanger.

Tightening specification -E- : 10 Nm.

-- Tighten the nut -C- for the refrigerant line -B-.

Fig 2: Identifying Screws To Refrigerant Line -B- And Nut -C-

Courtesy of AUDI OF AMERICA, LLC

-- Install the plenum chamber front wall. Refer to OVERVIEW - BULKHEAD .

NOTE:

Install refrigerant line such that it is not strained.

Check installation position of refrigerant line to expansion valve (it should not come in contact with other components).

-- Install the refrigerant line on the quick-coupling connections. Refer to REFRIGERANT LINES, DISCONNECTING FROM QUICK-RELEASE COUPLINGS AND CONNECTING .

-- Install the remaining removed components.

-- Evacuate the refrigerant circuit and fill it. Refer to USING SERVICE STATION . For additional information, refer to OVERVIEW - REFRIGERANT CIRCUIT, NOT OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITH HIGH VOLTAGE SYSTEM and OVERVIEW - REFRIGERANT CIRCUIT, OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITH HIGH VOLTAGE SYSTEM (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

Visually inspect the high voltage components -D- and high voltage cables -E- after completing the work procedures and before installing the plenum chamber cover -B-. Refer to HIGH VOLTAGE SYSTEM GENERAL WARNINGS .

Fig 3: Inspecting High Voltage Components

Courtesy of AUDI OF AMERICA, LLC

-- Electrical connections and routing. Refer to the appropriate SYSTEM WIRING DIAGRAM.

-- Energize the power supply to the high voltage system. Refer to HIGH VOLTAGE SYSTEM, RE-ENERGIZING .

Restart the high voltage system

CAUTION:

Risk of electrocution

Death or serious bodily injury by electric shock

The high voltage system may only be restarted by qualified personal (Audi high voltage technicians).
Make sure the vehicle is energized using the "Guided Fault Finding " on the Vehicle Diagnostic Tester.
The qualified personal (Audi high voltage technician) restarts the vehicle.
The Audi high voltage technician should put a sign on the vehicle to identify it as a high voltage vehicle.

NOTE:

Restart the high voltage system:

Connect the vehicle diagnostic tester.

Select the Guided Fault Finding mode.

Using the GO TO button, select the following menu commands

Function/Component Selection

Body

Electrical Equipment

OBD-capable systems

8C - Battery Regulation Control Module -J840

8C - Battery Regulation Control Module, functions

51 - High voltage restart

-- Turn on the ignition.

-- Check the DTC memory for the Climatronic Control Module -- display and control head and erase any displayed malfunctions, if necessary using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.

-- Operate the A/C system after filling the refrigerant circuit. Refer to A/C SYSTEM, STARTING OPERATION AFTER FILLING REFRIGERANT CIRCUIT .

NOTE:

Observe the information regarding operating the A/C system after filling. Refer to A/C SYSTEM, OPERATING AFTER CHARGING , (Refrigerant R134a, Servicing; A/C System, General Information). After charging the A/C system before activating the A/C system.