Supplemental restraint system control unit, component description - GF91.60-P-4080FL
MODEL 212
Location
The Supplemental Restraint System control unit is located on the center tunnel.
Task
The Supplemental Restraint System control unit has the following tasks:
- Reading in of sensors and signals
- Evaluation of input factors
- Actuation of components
Reading in of sensors and signals
The input factors are read in via the following connections:
- Direct line
- Chassis CAN (CAN E) (up to 28.2.13 with code (U10) Front passenger seat with weight sensing)
- Seat occupied LIN (LIN E2) (as of 1.3.13 with code (U10) Front passenger seat with weight sensing or code (U18) Automatic child seat recognition (ACSR))
Direct line
The signals from the following components are read via a direct line:
- Engine hood switch pedestrian protection + ATA Hall sensor (A38/1) (with code (U60) Pedestrian protection)
- Left sidebag sensor (A53)
- Right sidebag sensor (A54)
- Front passenger seat occupied recognition (B41/1) (without code (U18) Automatic child seat recognition (ACSR) and without code (U10) Front passenger seat with weight sensing)
- Seat occupied recognition and front passenger seat ACSR (B48) (with code (U18) Automatic child seat recognition (ACSR) up to 28.2.13)
- Left frontal acceleration sensor (B48/1)
- Right frontal acceleration sensor (B48/2)
- Left front door pressure sensor (B48/7)
- Right front door pressure sensor (B48/8)
- Left rear door pressure sensor (B48/9) (with code (293) Sidebag in left and right rear)
- Right rear door pressure sensor (B48/10) (with code (293) Sidebag in left or right rear)
- Pedestrian protection Hall sensor (B100) (with code (U60) Pedestrian protection)
- Left front bumper pedestrian protection sensor (B151/1) (with code (U60) Pedestrian protection)
- Center front bumper pedestrian protection sensor (B151/2) (with code (U60) Pedestrian protection up to 28.2.13)
- Right front bumper pedestrian protection sensor (B151/3) (with code (U60) Pedestrian protection)
- Driver seat belt buckle restraint system switch (S68/3)
- Front passenger seat belt buckle restraint system switch (S68/4)
- Front passenger seat position detection switch (S68/20) (with code (U10) Front passenger seat with weight sensing as of 1.3.13)
The rear SAM control unit with fuse and relay module (N10/2) reads in the status of the left rear seat belt buckle switch (S68/5), the right rear seat belt buckle switch (S68/6) as well as the center rear seat belt buckle switch (S68/14) and transmits these via the interior CAN (CAN B), the front SAM control unit with fuse and relay module (N10/1) and the chassis CAN (up to 28.2.13) or chassis CAN 1 (CAN E1) (as of 1.3.13) to the Supplemental Restraint System control unit.
Chassis CAN (up to 28.2.13 with code (U10) Front passenger seat with weight sensing)
The status of the seat occupied recognition is sent by the Weight Sensing System (WSS) control unit (N110) via the interior CAN, the front SAM control unit and the chassis CAN to the Supplemental Restraint System control unit.
Seat occupied LIN (as of 1.3.13 with code (U10) Front passenger seat with weight sensing or code (U18) Automatic child seat recognition (ACSR))
The WSS control unit or the seat occupied recognition and front passenger seat ACSR transmits the status of the seat occupied recognition via the seat occupied LIN to the Supplemental Restraint System control unit.
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Actuation of components
The actuation of the components takes place via the following connections:
- Direct line
- Chassis CAN (up to 28.2.13)
- Chassis CAN 1 (as of 1.3.13)
Direct line
The following components are actuated via a direct line:
- Pyrofuse 150 (F32f150)
- Pyrofuse (F63) (in model 212.095/098/298)
- Driver emergency tensioning retractor squib (R12/1)
- Passenger emergency tensioning retractor squib (R12/2)
- Front passenger airbag squib 1 (R12/4)
- Front passenger airbag squib 2 (R12/5)
- Left rear emergency tensioning retractor squib (R12/6)
- Right rear emergency tensioning retractor squib (R12/7)
- Driver sidebag squib (R12/9)
- Front passenger sidebag squib (R12/10)
- Left rear sidebag squib (R12/11) (with code (293) Sidebag in left and right rear)
- Right rear sidebag squib (R12/12) (with code (293) Sidebag in left and right rear)
- Driver airbag squib 1 (R12/13)
- Driver airbag squib 2 (R12/14)
- Left window bag squib (R12/22)
- Right window bag squib (R12/23)
- Driver kneebag squib (R1225) (with code (294) Kneebag)
- Driver pelvis airbag squib (R12/41) (with code (291) Pelvis airbag (PELVISBAG)
- Front passenger pelvis airbag squib (R12/42) (with code (291) Pelvis airbag (PELVISBAG)
- Front passenger airbag vent valve squib (R12/44) (with code (U10) Front passenger seat with weight sensing as of 1.3.13)
- Left active engine hood squib (R12/49) (with code (U60) Pedestrian protection as of 1.3.13)
- Right active engine hood squib (R12/50) (with code (U60) Pedestrian protection as of 1.3.13)
- Driver seat NECK-PRO head restraint solenoid (Y24/12)
- Front passenger seat NECK-PRO head restraint solenoid (Y24/13)
- Left rear engine hood lifter (Y127/1) (with code (U60) Pedestrian protection up to 28.2.13)
- Right rear engine hood lifter (Y127/2) (with code (U60) Pedestrian protection up to 28.2.13)
- Analog crash output to CDI control unit (N3/9) (with diesel engine) or the ME-SFI [ME] control unit (N3/10) (with gasoline engine) or the battery management system control unit (N82/2) (in model 212.095/098/298)
Chassis CAN (up to 28.2.13)
The signals are sent by the Supplemental Restraint System control unit over the chassis CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN 1 (as of 1.3.13)
The signals are sent by the supplemental restraint system control unit via chassis CAN 1. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
| Wiring diagram for airbag control unit | PE91.60-P-2105-97DAA PE91.60-P-2105-97DAB |