Audi A4: Pressures, Checking
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Pressures, Checking
- General Information
- Refrigerant Circuit, Checking Pressure with Service Station
- Checking Pressures for Vehicles with Restrictor and Reservoir (with Internally Regulated Compressor)
- Checking Pressures on Vehicles with Expansion Valve and Receiver/Dryer (with Internally Regulated Compressor)
- Vehicles with Restrictor, Reservoir and A/C Compressor Regulator Valve -N280- (Externally Regulated A/C Compressor), Checking Pressures
- Vehicles with Restrictor, Receiver/Dryer and A/C Compressor Regulator Valve -N280-, Checking Pressures, Externally Regulated Compressor
- Checking Pressures on Vehicles with Electrically Driven A/C Compressor (Vehicles with Hybrid Drive)
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General Information
Vehicles with a High Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- I
Refrigerant Circuit, Checking Pressure with Service Station
General Information
Note
All test conditions marked * are vehicle-specific and are
described in the Repair Manual for the relevant vehicle.
Check cooling performance.
Connections with val
Checking Pressures for Vehicles with Restrictor and Reservoir (with
Internally Regulated Compressor)
General Information
Note
Connect the A/C service station. Refer to
→ Chapter "A/C Service Station, Connecting".
Observe the test requirements. Refer to
→ Chapter "Pressures,
SEE MORE:
Special Tools
Special tools and workshop equipment required
Engine/Gearbox Jack Adapter - Wheel Hub Support -T10149-
Hydraulic Press - Bushing Assembly Tool Kit -T10230-
Gearbox Support -T40173-
Puller - Differential Bearing -T40032-
Rear Bushing Tool -T40033-
Torque Wrench 1331 5-50Nm -VAG1
Fiber-Optic Cables, Repairing
Caution
Do not bend the fiber-optic cable too much. The
bending radius must be no less than 25 mm.
Fiber optic cables must not be routed over sharp
edges.
The fiber-optic cable must not be dirty or touched
with bare fingers.
Fiber optic cables may not be heated.
It is not permitted to tw
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