- Running gear
- Body
- Power unit
- Power transmission
- Vehicle electrics
- Heating, ventilation, air conditioning system
- Auxiliary heater
- Heating
- Air conditioner with refrigerant R134a
- Air conditioning
- Self diagnosis, V.A.G Inspection Service
- Air conditioner self-diagnosis
- Self-diagnosis procedure
- Interrogating fault memory
- Final control diagnosis
- Basic setting
- Erasing fault memory, end of output
- Encoding operating and display unit, Climatronic control unit J255
- Reading measured value block
- Adaption of operating and display unit, Climatronic control unit J255
- Checking convenience data bus system
- Electrical checks on air conditioner
- Wiring and component check using test box V.A.G 1598A
- Special tools, testers and other items required
- Connecting test box V.A.G 1598A to connectors to operating and display unit, Climatronic control unit J255
- Pin assignment of test box V.A.G 1598A with adapter cable V.A.G 1598/11
- Checking
- List of electrical checks at the operating and display unit, Climatronic control unit J255
- Test steps "1” to "4”
- Test steps "5” to "9”
- Electrical checks on components actuated by operating and display unit, Climatronic control unit J255
- Heated windscreen
- Electrical checking of solar roof
- Mode of operation of air quality sensor G238
- Air conditioner