SEAT Workshop Service and Repair Manuals > Leon Mk1 > Heating, ventilation, air conditioning system | Heating and air conditioning | Heating | Heating control : operation, removing and fitting | Control unit for heating and fresh air connectors

Pin allocation for the multi-connectors on the rear of the control unit for heating and fresh air

16-pin connector free.

5-pin connector, T5

1 -	3ª Turbine speed

2 -	2ª Turbine speed

3 -	1ª Turbine speed

4 -	4ª Turbine speed

5 -	Terminal X

20-pin connector, T20 c

3 -	Servomotor for fresh air and recycled air flap -V154-

6 -	Servomotor for fresh air and recycled air flap -V154-

8 -	Rear window

11 -	Knurled knob to control the driver's seat heating -E94- (optional)

15 -	Knurled knob to control the front passenger's seat heating -E95- (optional)

16 -	Heating power/control switch -E16-

18 -	Terminal 30

19 -	Terminal 15

20 -	Terminal 31

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