A/C COMPRESSOR, REMOVING AND INSTALLING, ELECTRICALLY-DRIVEN A/C COMPRESSOR, Vehicles with 2.0L Hybrid: Installing

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Install in reverse order of removal. Note the following:

Before installing the A/C compressor. Refer to A/C SYSTEM, GENERAL INFORMATION (Refrigerant R134a, Servicing; A/C System, General Information).

NOTE:

There is a quantity of refrigerant oil in the removed A/C compressor, therefore observe the notes for replacing the A/C compressor. Refer to REFRIGERANT CIRCUIT COMPONENTS, REPLACING and A/C COMPRESSOR, REMOVING AND INSTALLING, ELECTRICALLY-DRIVEN A/C COMPRESSOR, Vehicles with 2.0L Hybrid (Refrigerant R134a, Servicing; Refrigerant Circuit Components, Replacing).

-- Install the A/C compressor on the bracket. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING ON BRACKET, ELECTRICALLY-DRIVEN A/C COMPRESSOR .

-- Attach the refrigerant lines to the A/C compressor. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING AT A/C COMPRESSOR .

NOTE:

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

After the installation of the electrically driven A/C compressor and the subsequent filling of the refrigerant circuit, start up the A/C compressor for the first time using the "compressor cut-in" function for the basic setting. The A/C compressor may otherwise become damaged if before installation, refrigerant oil was improperly stored in the A/C compressor compression chamber using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.

Only activate the electrically driven A/C compressor when the refrigerant circuits is filled. Damage to the A/C compressor may occur if the A/C compressor is running while the refrigerant circuit is empty using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

-- 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).

-- Insert and secure the connector for the high voltage system on the A/C compressor.

Fig 1: Installing High Voltage System Connector

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

Do not bend the high voltage cable.
Only insert the connector in the designated position (connector coding) on the A/C compressor. Never turn the connector.

-- Inspect the connector for debris and damage.

-- Plug the connector into the A/C compressor.

The marks -1- and -2- on the connector and A/C compressor must line up with each other.

-- Secure the locking mechanism in the direction of the -arrow-.

-- Install the remaining removed parts in the opposite order.

-- 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 Electrical A/C Compressor -V470- via the "compressor cut-in" function 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.