A12a Crash safety module

Connector overview

Number	X-pin, color	Description
X18069	40-pin, black	Component connector Crash safety module
X10179	40-pin, gray	Component connector Crash safety module

Pin assignments at plug connector X18069

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	USA Signal, up-front sensor	Front airbag sensor, driver's side

2	E	Signal Airbag sensor, front driver's side door	Airbag sensor, front driver's side door

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

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

5		Not occupied

6	A/E	CAN bus low	CAN-bus connector

7	A	Signal Airbag indicator light	Airbag indicator light

8	M	Shielding	battery lead monitoring

9		Not occupied

10	M	Ground	Ground point

11	E	USA Signal, up-front sensor	Front airbag sensor, driver's side

12	E	Signal Airbag sensor, front driver's side door	Airbag sensor, front driver's side door

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

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

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

16	A/E	CAN bus high	CAN-bus connector

17	A	Signal, automatic emergency call	TCU

18	M	Shielding	battery lead monitoring

19		Not occupied

20	E	Supply Terminal R	Car access system

21	A	Negative activation, airbag	Steering column switch cluster

22	A	Negative activation, airbag	Steering column switch cluster

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

24		Not occupied

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

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

27	A	Negative activation, seat belt tensioner	Generator, driver's seat belt tensioner

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

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

30	A	Negative activation, seat belt tensioner	Generator for end fitting pretensioner, driver's seat

31	A	Positive activation, airbag	Steering column switch cluster

32	A	Positive activation, airbag	Steering column switch cluster

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

34		Not occupied

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

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

37	A	Positive activation, seat belt tensioner	Generator, driver's seat belt tensioner

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

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

40	A	Positive activation, seat belt tensioner	Generator for end fitting pretensioner, driver's seat

Pin assignments at plug connector X10179

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	USA Signal, up-front sensor	Front airbag sensor, passenger's side

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

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

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

5		Not occupied

6		Not occupied

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

8		Not occupied

9		Not occupied

10		Not occupied

11	E	USA Signal, up-front sensor	Front airbag sensor, passenger's side

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

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

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

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

16		Not occupied

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

18		Not occupied

19		Not occupied

20		Not occupied

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

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

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

24	A	Negative activation, seat belt tensioner	Generator, passenger's seat belt tensioner

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

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

27		Not occupied

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

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

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

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

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

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

34	A	Positive activation, seat belt tensioner	Generator, passenger's seat belt tensioner

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

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

37		Not occupied

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

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

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