Get Air conditioning system -> 1.1 System overview - refrigerant circuit Guide for Volkswagen Touran 4 Door Second Generation (2015-2022)

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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

87 – Air conditioning system

Refrigerant circuit

⇒ “1.1 System overview - refrigerant circuit”, page 30

⇒ “1.2 General description - components of refrigerant circuit”,

page 36

⇒ “1.3 Possible complaints”, page 64

⇒ “1.4 Investigating leaks”, page 68

⇒ “1.5 Renewing components”, page 79

⇒ “1.6 Cleaning refrigerant circuit”, page 92

⇒ “1.7 Checking pressures with pressure gauge”, page 126

1.1

System overview - refrigerant circuit

⇒ “1.1.1 System overview - refrigerant circuit with expansion valve

and receiver”, page 30

⇒ “1.1.2 System overview - refrigerant circuit with restrictor and

reservoir”, page 32

⇒ “1.1.3 System overview - refrigerant circuit with electrically driv‐

en air conditioner compressor (with and without battery cooling

module)”, page 33

1.1.1

System overview - refrigerant circuit

with expansion valve and receiver

Note

♦ The arrows indicate the direction of coolant flow.

♦ The following diagram shows an example of a refrigerant cir‐

cuit with 2 evaporators and one internal heat exchanger.

♦ The layout of the refrigerant circuit is specific to the vehicle ⇒

Heating, air conditioning system; Rep. gr. 87 ; Refrigerant cir‐

cuit (vehicle-specific workshop manual).

HD = High-pressure side

ND = Low-pressure side

Rep. gr.87 - Air conditioning system

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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

1 - Air conditioner compressor

regulating valve - N280-

2 - Air conditioner compressor

3 - Pulley

❑ Depending on the ver‐

sion, an air conditioning

system magnetic clutch

- N25- is installed in the

belt pulley ⇒ Heating,

air conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

❑ Depending on the ver‐

sion there may be a

drive unit instead of the

belt pulley ⇒ Heating,

air conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

4 - High-pressure safety valve

5 - Refrigerant pressure send‐

❑ Vehicle-specific ver‐

sions ⇒ Heating, air

conditioning system;

Rep. gr. 87 ; Refrigerant

circuit .

6 - Condenser (with receiver)

7 - Receiver

❑ Installed on, at or in the

condenser ⇒ Heating,

air conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific workshop manual).

❑ With desiccant cartridge

8 - Service connection, high-pressure side

❑ With sealing cap

9 - Refrigerant line with internal heat exchanger

10 - Front expansion valve

11 - Front evaporator

❑ Evaporator in front heater and air conditioning unit (installed under dash panel)

12 - Service connection, low-pressure side

❑ With sealing cap

13 - Rear expansion valve

❑ Only on vehicles with rear air conditioning unit (extra equipment)

14 - Rear evaporator

❑ Only on vehicles with rear air conditioning unit (extra equipment)

1. Refrigerant circuit

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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

1.1.2

System overview - refrigerant circuit

with restrictor and reservoir

Note

♦ The arrows indicate the direction of coolant flow.

♦ The following diagram shows an example of a refrigerant cir‐

cuit with one evaporator.

♦ This refrigerant circuit layout is currently not planned for VW/

Audi vehicles.

♦ The layout of the refrigerant circuit is specific to the vehicle ⇒

Heating, air conditioning system; Rep. gr. 87 ; Refrigerant cir‐

cuit (vehicle-specific workshop manual).

HD = High-pressure side

ND = Low-pressure side

1 - Air conditioner compressor

regulating valve - N280-

2 - Air conditioner compressor

3 - Pulley

❑ Depending on the ver‐

sion, an air conditioning

system magnetic clutch

- N25- is installed in the

belt pulley ⇒ Heating,

air conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

❑ Depending on the ver‐

sion there may be a

drive unit instead of the

belt pulley ⇒ Heating,

air conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

4 - High-pressure safety valve

5 - Condenser

6 - Refrigerant pressure send‐

❑ Vehicle-specific ver‐

sions ⇒ Heating, air

conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

7 - Service connection, high-

pressure side

❑ With sealing cap

8 - Restrictor

9 - Evaporator

❑ Evaporator in front heater and air conditioning unit (installed under dash panel)

Rep. gr.87 - Air conditioning system

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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

10 - Service connection, low-pressure side

❑ With sealing cap

11 - Reservoir

❑ With desiccant cartridge

1.1.3

System overview - refrigerant circuit

with electrically driven air conditioner

compressor (with and without battery

cooling module)

Note

♦ The arrows indicate the direction of coolant flow.

♦ The following diagram shows an example of a refrigerant cir‐

cuit with expansion valve and second evaporator for battery

cooling and one internal heat exchanger.

♦ The layout of the refrigerant circuit is specific to the vehicle ⇒

Heating, air conditioning system; Rep. gr. 87 ; Refrigerant cir‐

cuit (vehicle-specific workshop manual).

HD = High-pressure side

ND = Low-pressure side

1. Refrigerant circuit

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Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

1 - Electrical air conditioner

compressor

❑ With control unit for air

conditioner compressor

- J842- and electrical air

conditioner compressor

- V470- ⇒ Heating, air

conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

2 - High-pressure safety valve

3 - Condenser

❑ With receiver and desic‐

cant cartridge.

4 - Receiver

❑ Part of condenser in this

case.

5 - Refrigerant pressure send‐

❑ Vehicle-specific ver‐

sions ⇒ Heating, air

conditioning system;

Rep. gr. 87 ; Refrigerant

circuit (vehicle-specific

workshop manual).

6 - Service connection, high-

pressure side

❑ With sealing cap.

7 - Refrigerant line with internal

heat exchanger

8 - Refrigerant shut-off valve

❑ Different designations

⇒ Heating, air condi‐

tioning system; Rep. gr. 87 ; Refrigerant circuit (vehicle-specific workshop manual).

❑ Only on vehicles with battery cooling module for hybrid battery unit - AX1-

Note

The refrigerant shut-off valve is ac‐

tuated e.g. if battery cooling is nec‐

essary and no cooling of the pas‐

senger compartment is required

(open when not actuated).

9 - Expansion valve

❑ On evaporator in heater and air conditioning unit

10 - Front evaporator

❑ Evaporator in heater and air conditioning unit

11 - -Expansion valve with shut-off valve-

❑ Different designations ⇒ Heating, air conditioning system; Rep. gr. 87 ; Refrigerant circuit (vehicle-

specific workshop manual).

❑ On evaporator in battery cooling module

❑ Only on vehicles with battery cooling module for hybrid battery unit - AX1-

Rep. gr.87 - Air conditioning system

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Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

Note

The -expansion valve with shut-off

valve- is actuated if battery cooling

is necessary (closed when not actu‐

ated).

12 - Evaporator

❑ Evaporator in battery cooling module

❑ Only on vehicles with battery cooling module for hybrid battery unit - AX1-

13 - Service connection, low-pressure side

❑ With sealing cap

1. Refrigerant circuit

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Air conditioning system -> 1.1 System overview - refrigerant circuit for Your Volkswagen Touran 4 Door Second Generation (2015-2022)

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