Audi Workshop Service and Repair Manuals > A4 Mk2 > Heating, ventilation, air conditioning system | Auxiliary heater | Self diagnosis, V.A.G Inspection Service | Auxiliary heater electrical checks | Electrical checks at connector to auxiliary heater components | List of electrical checks to be performed at connector C (to auxiliary heater components)

List of electrical checks to be performed at connector C (to auxiliary heater components)

List of electrical checks to be performed at connector -C- (to auxiliary heater components)

Test step

Component checked

Page

Glow plug for heater -Q9-

–	with corresponding wiring

Combustion air blower -V6-

–	with corresponding wiring

Circulation pump -V55-

–	with corresponding wiring

Heater overheating fuse -S24-

–	with corresponding wiring

Temperature sensor -G18-

–	with corresponding wiring

Flame monitor -G64-

–	with corresponding wiring