A12 Multiple restraint system control unit

Plug connector overview

NumberX-pin, colourDescription
X1017926-pin, blackComponent connector Multiple restraint system control unit
X1806954-pin, blackComponent connector Multiple restraint system control unit

Pin assignments at plug connector X10179

PinTypeDescription / Signal typeConnection /
Measuring notes
1ANegative activation, airbagSteering column switch cluster
   
2APositive activation, airbagSteering column switch cluster
   
3APositive activation, airbagInflator assemblies, passenger's airbag
   
4ANegative activation, airbagInflator assemblies, passenger's airbag
   
5ANegative activation, airbagSteering column switch cluster
   
6APositive activation, airbagSteering column switch cluster
   
7APositive activation, airbagInflator assemblies, passenger's airbag
   
8ANegative activation, airbagInflator assemblies, passenger's airbag
   
9 Not used 
   
10 Not used 
   
11 Not used 
   
12 Not used 
   
13 Not used 
   
14 Not used 
   
15 Not used 
   
16ESignal, airbag deactivation -Switch, passenger airbag deactivation
   
17ESignal, airbag deactivation +Switch, passenger airbag deactivation
   
18A/ESignal, CAN-busJunction box, electronics
   
19A/ESignal, CAN-busJunction box, electronics
   
20 Not used 
   
21 Not used 
   
22 Not used 
   
23 Not used 
   
24 Not used 
   
25 Not used 
   
26 Not used 
   

Pin assignments at plug connector X18069

PinTypeDescription / Signal typeConnection /
Measuring notes
1ANegative activation, seat belt tensionerBelt tensioner, driver
   
2APositive activation, seat belt tensionerBelt tensioner, driver
   
3APositive activation, seat belt tensionerBelt tensioner, passenger
   
4ANegative activation, seat belt tensionerBelt tensioner, passenger
   
5ANegative control, generator for safety battery terminalGenerator, safety battery terminal
   
6APositive control, generator for safety battery terminalGenerator, safety battery terminal
   
7APositive activation, airbagHead airbag inflator assembly, left
   
8ANegative activation, airbagHead airbag inflator assembly, left
   
9ANegative activation, airbagHead airbag inflator assembly, right
   
10APositive activation, airbagHead airbag inflator assembly, right
   
11APositive activation, airbagSide airbag inflator assembly, driver
   
12ANegative activation, airbagSide airbag inflator assembly, driver
   
13ANegative activation, airbagSide airbag inflator assembly, passenger
   
14APositive activation, airbagSide airbag inflator assembly, passenger
   
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 
   
25ESensor signalAirbag sensor, left B-pillar
   
26ESensor signalAirbag sensor, left B-pillar
   
27ESensor signalAirbag sensor, left B-pillar
   
28 Not used 
   
29 Not used 
   
30 Not used 
   
31 Not used 
   
32ESensor signalAirbag sensor, right B-pillar
   
33ESensor signalAirbag sensor, right B-pillar
   
34ESensor signalAirbag sensor, right B-pillar
   
35 Not used 
   
36 Not used 
   
37ESignal, seat belt contactDriver's seat belt buckle contact
   
38ESignal, seat belt contactPassenger's seat belt buckle contact
   
39 Not used 
   
40 Not used 
   
41 Not used 
   
42ETerminal RCar access system
   
43MGroundGround point
   
44ASignal, front passenger airbag deactivatedFunction control centre, roof
   
45ESensor signalAirbag sensor, left B-pillar
   
46 Not used 
   
47ESignal, seat occupancySeat occupancy recognition
   
48 Not used 
   
49 Not used 
   
50 Not used 
   
51 Not used 
   
52ESensor signalAirbag sensor, right B-pillar
   
53 Not used 
   
54ACrash signalTelephone transceiver