A11 Heating and A/C control module

Connector location views

Number	X-pin, colour	Description
X610	26-pin, blue	Plug connector Heating and A/C control module
X4714	18-pin, blue	Plug connector Heating and A/C control module

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	Terminal 30	Fuse F39

2	E	Terminal 15	Fuse F22

3	E	Terminal 58g	Light switching centre control unit

4	M	Ground	Ground connector

5		Not used

6		Not used

7		Not used

8		Not used

9	E/A	K-bus signal	K-bus connector

10		Not used

11		Not used

12		Not used

13	A	Signal, rear window defogger	Rear defogger relay

14	A	Signal, rear window defogger	Rear window defogger relay

15		Not used

16		Not used

17		Not used

18		Not used

19		Not used

20		Not used

21		Not used

22		Not used

23		Not used

24		Not used

25		Not used

26		Not used

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Supply, MI-bus motors	Stepper motors

2	E	Ground, MI-bus motors	Stepper motors

3	E/A	MI-bus	Stepper motors

4	A	Blower control voltage	Blower output stage

5		Not used

6		Not used

7	E	Signal inputs	Microswitch, air distribution

8	M	Sensor ground, air conditioning system	Microswitch, air distribution

9		Not used

10		Not used

11		Not used

12		Not used

13	A	Signal, fresh air/recirculating air flap actuator	Fresh air/air recirculation flap motor

14	M	Ground signal, fresh air/recirculating air flap actuator	Fresh air/air recirculation flap motor

15	A	Signal, fresh air/recirculating air flap actuator	Fresh air/air recirculation flap motor

16	M	Ground signal, fresh air/recirculating air flap actuator	Fresh air/air recirculation flap motor

17		Not used

18		Not used