AIR CONDITIONING – Audi A8 Quattro 1999 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Audi A8 Quattro 1999

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Audi A8 Quattro 1999:

• (behind lower left center of dash, on hvac assembly)
• (behind lower left center of dash, on hvac assembly) left footwell flap motor/position sensor
• (behind lower right center of dash, on hvac assembly) right footwell flap motor/position sensor
• (behind right center of dash, on hvac assembly) flap motor temperature regulator/position sensor
• (left rear of engine compt)
• (left rear of engine compt) recirculation flap motor/ position sensor
• A/c control head
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• A23
• A24
• Air flow flap motor/ back pressure flap motor position sensor
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• B21
• B22
• Center vent adjusting motor/position sensor
• Fresh air blower (center rear of engine compt)
• Fresh air blower control module (right rear of engine compt)
• G43 (above right kick panel)
• Interior monitoring sensors control module
• Left center vent motor/position sensor (behind upper left center of dash, on hvac assembly)
• Rear footwell vent motor/position sensor (behind lower left center of dash, on hvac assembly)
• Red
• Right center vent motor/position sensor (behind upper right center of dash, on hvac assembly)
• Solid state

Automatic A/C Wiring Diagram (2 of 3) for Audi A8 Quattro 1999

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Audi A8 Quattro 1999:

• (above left kick panel) g44
• (above right kick panel) g43
• (behind left center of dash) left vent temperature sensor
• (behind left center of dash, on hvac assembly) defroster flap motor/ position sensor
• (behind right center of dash) right vent temperature sensor
• (left rear of engine compt) fresh air intake duct temperature sensor
• (on right front footwell e-box relay panel) solar cell separation relay
• 40a
• 60a
• Air quality sensor
• Blower fan fuse
• Central electric panel
• Coolant fan
• Coolant fan control relay (on relay panel)
• Coolant fan control series resistance (lower left front of engine compt)
• Coolant fan control thermal switch (lower right side of radiator)
• Coolant fan fuse
• Fuse 4 (st2) 5a
• Fuse panel (right front foot- well)
• G43 (above right kick panel)
• Hot at all times
• Hot w/ load reduction relay energized
• Left center vent switch (behind upper left center of dash, on vent)
• Nca
• Red
• Second speed coolant fan control relay (on relay panel)
• Solar cells
• Solar operation control module
• Solid state
• Third speed coolant fan control relay (below left side of dash)

Automatic A/C Wiring Diagram (3 of 3) for Audi A8 Quattro 1999

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Audi A8 Quattro 1999:

• (above a/c controls, in center console) instrument panel interior temperature sensor
• (above left kick panel) g43
• (behind center of lower radiator grill) outside air temperature sensor
• (in plenum chamber e-box) motronic engine control module
• (integral with coolant pump)
• (on top
• 1/+
• 2/-
• A/c clutch
• A/c clutch relay (on right front footwell e-box relay panel)
• A/c control head
• A/c refrigerant high pressure switch (below left headlight)
• A/c refrigerant low pressure switch (left rear of engine compt)
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• Center of
• Center vent position sensor (behind upper center of dash, on hvac assembly)
• Computer data lines system
• Coolant pump (left rear of engine compt)
• D10
• D11
• D12
• E10
• E11
• E12
• Fuse 4 (st3) 10a
• Fuse 5 (st3) 15a
• Fuse 7 (st3) 15a
• Fuse panel (right front foot- well)
• G43 (above left kick panel)
• Hot at all times
• Hot in run and start
• Instrument cluster combination processor
• Interior lights system
• Interior temperature sensor fan
• Left heat regulating valve
• Middle defrost vent) sunlight photo sensor
• Nca
• Protection diode
• Right center vent switch (behind upper right center of dash, on vent)
• Right heat regulating valve
• Solid state
• T16a
• T26
• T26b
• Wiper/washer system