Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Heating, ventilation, air conditioning | Heating, air conditioning | Air conditioner | Climatronic air conditioning system with automatic regulation, vehicles 10.99 ? | Connectors on Climatronic control unit J255 | Pin assignment for multi-pin connectors A, B, C and D on back of Climatronic control unit

Climatronic - passenger compartment > < Connectors on Climatronic control unit J255

Pin assignment for multi-pin connectors A, B, C and D on back of Climatronic control unit

Pin assignment for multi-pin connectors A, B, C and D on back of Climatronic control unit

12-pin connector, connector housing -A-

1 -	K line, diagnosis

5 -	Dim voltage 58 d

7 -	Fresh air intake duct temperature sensor -G89-

8 -	Ambient temperature sensor -G17-

9 -	Sunlight penetration photosensor -G107-

12 -	Signal earth, control motors

N87-0629

20-pin connector, connector housing -B-

1 -	Ambient temperature for estate

5 -	Footwell vent temperature sender -G192-

6 -	Centre vent temperature sender -G191-

7 -	Evaporator output temperature sender -G263-

8 -	Temperature flap control motor potentiometer -G92-

9 -	Central flap control motor potentiometer -G112-

10 -	Footwell/defroster flap control motor potentiometer -G114-

14 -	Temperature increase off/ PTC off

17 -	Air flow flap control motor potentiometer -G113-

N87-0629

16-pin connector, connector housing -C-

2 -	Diagnosis 2/32 bar (high-pressure side)

4 -	Speed signal

6 -	Engine speed

8 -	+ 5V 10 mA for control motors

11 -	Fresh air blower -V2- (-)

12 -	Engine electronics, bidirectional

14 -	Fresh air blower -V2- (+)

15 -	Wiring harness control for VW (internal)

16 -	Fresh air blower control unit -J126-, activation

N87-0629

16-pin connector, connector housing -D-

1 -	Auxiliary heating

2 -	Temperature flap control motor -V68-

3 -	Footwell and defroster flap control motor -V85-

4 -	Central flap control motor -V70-

5 -	Air flow flap control motor -V71-

6 -	Air conditioning system compressor regulating valve -N280-, externally regulated air conditioner compressor

7 -	Terminal 30 (optional)

8 -	Magnetic coupling/ fan speed 2

9 -	Terminal 15 for 2-way valve relay for coolant shut-off valve -J585-

10 -	Temperature flap control motor -V68-

11 -	Footwell and defroster flap control motor -V85-

12 -	Central flap control motor -V70-

13 -	Air flow flap control motor -V71-

14 -	Terminal 31

15 -	Radiator fan control unit -J293-

N87-0629

Heating, ventilation, air conditioning
Heating, air conditioning
Air conditioner
Climatronic air conditioning system with automatic regulation, vehicles 10.99 ? / nnectors_on__climatronic_control_unit_j255/">Connectors on Climatronic control unit J255
Pin assignment for multi-pin connectors A, B, C and D on back of Climatronic control unit

Climatronic - passenger compartment > < Connectors on Climatronic control unit J255