Electrical Components Of A/C Unit

-- Remove A/C unit. Refer to A/C UNIT .

1. A/C System Wiring Harness
   • Different versions, for example, with or without voltage supply to the auxiliary heater heating element -Z35-)
   • Mark the allocation before disconnecting the connectors (danger of interchange, connectors of same shape for different control motors and temperature sensor).
   • Secure wiring harness to mounting points provided on housing (using cable ties, or on mounts) so that it does not come into contact with moving components.
2. Air Conditioner Unit
   • Removing and installing, refer to A/C UNIT .
   • Heating and A/C unit, disassembling and assembling, refer to A/C UNIT .
   • Disassembling and assembling evaporator housing, refer to EVAPORATOR HOUSING .
3. Auxiliary Air Heater Heating Element -Z35-
   • Only intended for vehicles with Diesel engine.
4. Cover For Coolant Pipes and Heater Core
   • This illustration shows version for vehicles with Auxiliary Air Heater Heating Element -Z35-.
   • Different versions for vehicles with or without Auxiliary Air Heater Heating Element -Z35- (opening for Auxiliary Air Heater Heating Element -Z35- is sealed by this cover in vehicles without Auxiliary Air Heater Heating Element -Z35-).
5. Screw
6. Central Air Door Motor -V70-
   • With Central Door Motor Position Sensor -G112-.
   • Removing and installing, refer to CENTRAL AIR DOOR MOTOR -V70- / -V145- .
     NOTE:

     Depending on the version of the Climatronic control module -J255-, the Central Air Door Motor (with Central Door Motor Position Sensor -G112-) may be designated as Front Air Distribution Motor -V145- (with Front Air Distribution Motor Position Sensor -G470-) in On Board Diagnostic (OBD).

7. Left Temperature Door Motor -V158-
   • With Left Temperature Door Potentiometer/Actuator -G220-.
   • Lever color identification: white.
   • Removing and installing, refer to LEFT TEMPERATURE DOOR MOTOR -V158- .
     NOTE:

     On the Audi TT, both positioning motors for left and right temperature doors are controlled via one characteristics curve, depending on the programmed end stops (only one temperature setting on the Climatronic control module -J255-).

     Depending on the measured temperatures, the calculated sunlight intensity and setting on Climatronic control module, the calculated specified outflow temperature may be different for the left and right side.

8. Connecting Rod to Left Temperature Door Motor -V158-
   • Color identification: black (longer than connecting rod to Right Temperature Door Motor -V159-).
9. Defroster Door Motor -V107-
   • Wth Defroster Door Motor Position Sensor -G135-.
   • Lever color identification: blue.
   • Removing and installing, refer to DEFROSTER DOOR MOTOR -V107- .
     NOTE:

     This motor is fastened on the right on air distributor housing in vehicles with right-side steering.

10. Connecting Rod to Defroster Door Motor -V107-
    • Color identification: blue.
11. Left Footwell Vent Temperature Sensor -G261-
    • Removing and installing, refer to LEFT FOOTWELL VENT TEMPERATURE SENSOR -G261- .
12. Right Footwell Vent Temperature Sensor -G262-
    • Removing and installing, refer to RIGHT FOOTWELL VENT TEMPERATURE SENSOR -G262- .
13. Cover and Bracket for Air Flow Door Motor -V71- and Recirculation Door Motor -V113-
    • Removing and installing, refer to RECIRCULATION DOOR MOTOR -V113- .
    • After installing, check both control motors which must be held in position by this bracket, if they are not installed free of play, use some foam to rectify play if necessary, attaching it to inside of mounting points of bracket. Refer to AIR FLOW DOOR MOTOR -V71-, FUNCTION .
14. Recirculation Door Motor -V113-
    • With Recirculation Door Motor Position Sensor -G143-.
    • Removing and installing, refer to RECIRCULATION DOOR MOTOR -V113- .
15. Airflow Door Motor -V71-
    • With Back Pressure Door Motor Position Sensor -G113-.
    • Removing and installing, refer to AIR FLOW DOOR MOTOR -V71- .
16. Foam Seal
    • For sealing air intake housing of heating & A/C unit to vehicle.
17. Intake Housing With Recirculating Air and Air Flow/Fresh Air Door
    • Do not disassemble further.
    • Removing and installing, refer to AIR INTAKE HOUSING WITH RECIRCULATING AND AIR FLOW/FRESH AIR DOOR .
    • Can be obtained as a replacement part in various versions. Refer to AIR INTAKE HOUSING WITH RECIRCULATING AND AIR FLOW/FRESH AIR DOOR .
18. Temperature Sensor (Component Not Installed)
    • Depending on version of air intake shroud, there may be an opening here for installing the temperature sensor, the temperature sensor pictured is not installed on the Audi TT, if there is an opening in the air intake shroud, it is seal with a grommet if necessary.
19. Fresh Air Blower Control Module -J126- and Fresh Air Blower -V2-
    • Removing and installing, refer to FRESH AIR BLOWER CONTROL MODULE -J126- AND FRESH AIR BLOWER -V2- .
    • Different versions. At the start of production, a Fresh Air Blower on which the Fresh Air Blower Control Module is cast with the blower -V2- (cannot be replaced individually) was installed. In model year 2007, Fresh Air Blower Control Module and Fresh Air Blower that are bolted together (each can be replaced separately) will be introduced as a running change. Refer to FRESH AIR BLOWER CONTROL MODULE -J126- AND FRESH AIR BLOWER -V2- .
    • The Fresh Air Blower Control Module is installed in the Fresh Air Blower. Depending on the version, both of these components can be either replaced separately or only together.
20. Insulation Mat
21. Screw Clips
22. Right Temperature Door Motor -V159-
    • With Right Temperature Door Potentiometer/Actuator -G221-.
    • Lever color identification: black.
    • Removing and installing, refer to RIGHT TEMPERATURE DOOR MOTOR -V159- .
    • For this positioning motor, observe note on Left Temperature Door Motor -V158- A/C UNIT .
23. Connecting Rod to Right Temperature Door Motor -V159-
    • Color identification: black (shorter than connecting rod to Left Temperature Door Motor, left -V158-).
24. Evaporator Vent Temperature Sensor -G263-
    • Removing and installing, refer to EVAPORATOR VENT TEMPERATURE SENSOR -G263- .
25. Cable Ties
26. Wiring Harness Bracket