A12a Crash safety module

Plug connector overview

Number	X-pin, colour	Description
X10179	40-pin, grey	Component connector Crash safety module
X18069	40-pin, black	Component connector Crash safety module

Pin assignments at plug connector X10179

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Positive activation, airbag	Inflator assemblies, passenger's airbag

2	A	Positive activation, airbag	Inflator assemblies, passenger's airbag

3	A	Positive activation, airbag	Side airbag inflator assembly, passenger

4		Not used

5	A	Positive activation, airbag	Inflator assembly, side airbag, rear passenger's side

6	A	Positive activation, active head restraint	Generator for active head restraint, passenger's seat

7	A	Positive activation, seat belt tensioner	Belt tensioner, passenger

8	A	Positive activation, seat belt tensioner	Generator, seat belt pretensioner, rear driver's side

9	A	Positive activation, airbag	Inflator assembly, passenger's side head airbag

10	A	Positive control, generator for safety battery terminal	Generator, safety battery terminal

11	A	Negative activation, airbag	Inflator assemblies, passenger's airbag

12	A	Negative activation, airbag	Inflator assemblies, passenger's airbag

13	A	Negative activation, airbag	Side airbag inflator assembly, passenger

14		Not used

15	A	Negative activation, airbag	Inflator assembly, side airbag, rear passenger's side

16	A	Negative activation, active head restraint	Generator for active head restraint, passenger's seat

17	A	Negative activation, seat belt tensioner	Belt tensioner, passenger

18	A	Negative activation, seat belt tensioner	Generator, seat belt pretensioner, rear driver's side

19	A	Negative activation, airbag	Inflator assembly, passenger's side head airbag

20	A	Negative control, generator for safety battery terminal	Generator, safety battery terminal

21		Not used

22		Not used

23		Not used

24	E	Signal, airbag deactivation +	Switch, passenger airbag deactivation

25		Not used

26	E	Signal Passenger's seat belt buckle contact	Passenger's seat belt buckle contact

27	E	Signal Airbag sensor, B-pillar, passenger's side	Airbag sensor, B-pillar, passenger's side

28	E	Signal Airbag sensor, B-pillar, passenger's side	Airbag sensor, B-pillar, passenger's side

29	E	Signal Airbag sensor, front passenger's side door	Airbag sensor, front passenger's side door

30		Not used

31		Not used

32		Not used

33		Not used

34	E	Signal, airbag deactivation -	Switch, passenger airbag deactivation

35		Not used

36		Not used

37	E	Signal Airbag sensor, B-pillar, passenger's side	Airbag sensor, B-pillar, passenger's side

38	E	Signal Airbag sensor, B-pillar, passenger's side	Airbag sensor, B-pillar, passenger's side

39	E	Signal Airbag sensor, front passenger's side door	Airbag sensor, front passenger's side door

40		Not used

Pin assignments at plug connector X18069

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Positive activation Generator for end fitting pretensioner, driver's seat	Generator for end fitting pretensioner, driver's seat

2	A	Positive activation, airbag	Inflator assembly, driver's side head airbag

3	A	Positive activation, seat belt tensioner	Generator, seat belt pretensioner, rear passenger's side

4	A	Positive activation, seat belt tensioner	Belt tensioner, driver

5	A	Positive activation, active head restraint	Generator for active head restraint, driver's seat

6	A	Positive activation, airbag	Inflator assembly, side airbag, rear driver's side

7		Not used

8	A	Positive activation, airbag	Side airbag inflator assembly, driver

9	A	Positive activation, airbag	Steering column switch cluster

10	A	Positive activation, airbag	Steering column switch cluster

11	A	Negative activation Generator for end fitting pretensioner, driver's seat	Generator for end fitting pretensioner, driver's seat

12	A	Negative activation, airbag	Inflator assembly, driver's side head airbag

13	A	Negative activation, seat belt tensioner	Generator, seat belt pretensioner, rear passenger's side

14	A	Negative activation, seat belt tensioner	Belt tensioner, driver

15	A	Negative activation, active head restraint	Generator for active head restraint, driver's seat

16	A	Negative activation, airbag	Inflator assembly, side airbag, rear driver's side

17		Not used

18	A	Negative activation, airbag	Side airbag inflator assembly, driver

19	A	Negative activation, airbag	Steering column switch cluster

20	A	Negative activation, airbag	Steering column switch cluster

21	E	Supply Terminal R	Car access system

22		Not used

23	E	Shield	battery lead monitoring

24	A	Signal, automatic emergency call	TCU

25	A/E	CAN bus high	CAN-bus connector

26	E	Signal, seat belt contact	Driver's seat belt buckle contact

27	E	Signal Airbag sensor, B-pillar, driver's side	Airbag sensor, B-pillar, driver's side

28	E	Signal Airbag sensor, B-pillar, driver's side	Airbag sensor, B-pillar, driver's side

29	E	Signal Airbag sensor, front passenger's side door	Airbag sensor, front passenger's side door

30		Not used

31	M	Ground	Ground point

32		Not used

33	E	Shield	battery lead monitoring

34	A	Signal Airbag indicator light	Airbag indicator light

35	A/E	CAN bus low	CAN-bus connector

36		Not used

37	E	Signal Airbag sensor, B-pillar, driver's side	Airbag sensor, B-pillar, driver's side

38	E	Signal Airbag sensor, B-pillar, driver's side	Airbag sensor, B-pillar, driver's side

39	E	Signal Airbag sensor, front passenger's side door	Airbag sensor, front passenger's side door

40		Not used