Running gear
Body
Power unit
Power transmission
Vehicle electrics
Heating, ventilation, air conditioning system
Auxiliary heater
Self diagnosis, V.A.G Inspection Service
Auxiliary heater self-diagnosis
Self-diagnosis procedure
Interrogating fault memory
Auxiliary heater fault table
Auxiliary heater final control diagnosis
Basic setting of auxiliary heater
Erasing fault memory, end of output
Encoding auxiliary heater
Reading measured value block
Adaption of auxiliary heater
Auxiliary heater electrical checks
Preparation for electrical checks
Measuring instruments and test equipment required
Test requirements
Preparation
Electrical checks at vehicle electrical system connector
Electrical checks at connector to auxiliary heater components
Functional description of auxiliary heater
Checking convenience data bus system
Aux. heater/heater booster
Heating
Air conditioner with refrigerant R134a
Air conditioning