System Overview - Refrigerant Circuit With Electrically-Driven A/C Compressor (With Or Without Battery Cooling Module)

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The arrows indicate the refrigerant flow direction.

The following illustration shows a refrigerant circuit with an expansion valve and a second evaporator for cooling the battery and an inner heat exchanger as an example.

The layout of the refrigerant circuit is vehicle-specific. Refer to REFRIGERANT CIRCUIT .

HD = High Pressure Side

ND = Low Pressure Side

Fig 1: Exploded View Of Refrigerant Circuit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Electrically-Driven A/C Compressor
- With A/C Compressor Control Module -J842- and Electrical A/C Compressor -V470-. Refer to A/C COMPRESSOR .
Pressure Relief Valve
Condenser
- With receiver/dryer and dryer cartridge.
Receiver/Dryer
- Is a component of the condenser
Refrigerant Pressure Sensor
- Vehicle-specific versions. Refer to REFRIGERANT CIRCUIT , PRESSURE RELIEF VALVE , High Pressure Sensor -G65-, REMOVING AND INSTALLING .
Service Connection - High Pressure Side
- With closure cap.
Refrigerant Line with Inner Heat Exchanger
Refrigerant Shut-Off Valve
- Different names. Refer to REPAIR INFORMATION , REFRIGERANT CIRCUIT .
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Refrigerant Shut-Off Valve is for example activated, if the battery needs to be cooled and the vehicle interior is not already being cooled (open without activation).
Expansion Valve
- On the heater and A/C unit evaporator
Front Evaporator
- Heater and A/C unit evaporator
Expansion Valve with Shut-Off Valve:
- Different names. Refer to REFRIGERANT CIRCUIT .
- On the evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Expansion Valve with Shut-Off Valve is activated when it is necessary to cool the battery (closed without activation).
Evaporator
- Evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
Service Connection - Low Pressure Side
- With closure cap