Component description for supplemental restraint system control unit - GF91.60-P-4068CE
MODEL 204.0/2 as of model year 2009
MODEL 204.3
MODEL 204.9
Shows model 204.0
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
On model 204.9 with code (494) USA version, an accident data recorder is integrated in the supplemental restraint system control unit. This works in principle like the "black box" known from aviation. The data stored can be used to trace back the course of the accident.
Reading in of sensors and signals
The input factors are read in via the following connections:
- Direct line
- Chassis CAN (CAN E)
- Seat occupancy LIN (LIN E2) (on model 204.0/2 as of 1.3.11, model 204.9 as of 1.6.11)
Direct line
The signals from the following components are read via direct lines:
- Pedestrian protection Hall sensor + engine hood ATA switch (A38/1) (on model 204.3 with code (U60) Pedestrian protection)
- Left sidebag sensor (A53)
- Right sidebag sensor (A54)
- Front passenger seat occupied recognition (B41/1) (on model 204.0/2 up to 28.2.11, model 204.9 up to 31.5.11, model 204.3 without code (U18) Automatic child seat recognition (ACSR [AKSE]) and without code (U10) Front passenger seat with weight detection)
- Front passenger seat occupied recognition and ACSR [AKSE] (B48) (on model 204.0/2 up to 28.2.11, model 204.9 up to 31.5.11, model 204.3 with code (U18) Automatic child seat recognition (ACSR [AKSE]))
- 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) (on model 204.0/2/9 with code (293) Left and right rear sidebag)
- Right rear door pressure sensor (B48/10) (on model 204.0/2/9 with code (293) Left and right rear sidebag)
- Pedestrian protection Hall sensor (B100) (on model 204.3 with code (U60) Pedestrian protection)
- Left front bumper pedestrian protection sensor (B151/1) (on model 204.3 with code (U60) Pedestrian protection)
- Center front bumper pedestrian protection sensor (B151/2) (on model 204.3 with code (U60) Pedestrian protection)
- Right front bumper pedestrian protection sensor (B151/3) (on model 204.3 with code (U60) Pedestrian protection)
- Driver belt buckle restraint system switch (S68/3)
- Front passenger belt buckle restraint system switch (S68/4)
Chassis CAN
The following signal is read in via chassis CAN on model 204.0 up to 28.2.11, model 204.9 up to 31.5.11, model 204.3 with code (U10) Front passenger seat with weight detection:
- Status of seat occupied recognition from weight sensing system (WSS) control unit (N110) (sent by front SAM control unit with fuse and relay module (N10/1))
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Seat occupancy LIN (on model 204.0/2 as of 1.3.11, model 204.9 as of 1.6.11)
The signals from the following components are read in via seat occupancy LIN:
- Front passenger seat occupied recognition (without code (U18) Automatic child seat recognition (ACSR) and without code (U10) Front passenger seat with weight sensing))
- Front passenger seat occupied recognition and ACSR (with code (U18) Automatic child seat recognition (ACSR))
- Weight sensing system (WSS) control unit (in model 204.0/9 with code (U10) Front passenger seat with weight detection)
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
Direct line
The following components are actuated via direct lines:
- Pyrofuse 88 (F32f88) (without code (B03) ECO start/stop function)
- Pyrofuse (F63) (with code (B03) ECO start/stop function)
- 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) Left and right rear sidebag)
- Right rear sidebag squib (R12/12) (with code (293) Left and right rear sidebag)
- Driver airbag squib 1 (R12/13)
- Driver airbag squib 2 (R12/14)
- Left windowbag squib (R12/22)
- Right windowbag squib (R12/23)
- Driver kneebag squib (R12/25) (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))
- Driver seat NECK-PRO head restraint solenoid (Y24/12) (except model 204.077/277/377)
- Front passenger seat NECK-PRO head restraint solenoid (Y24/13) (except model 204.077/277/377)
- Left rear engine hood lifter (Y127/1) (on model 204.3 with code (U60) Pedestrian protection)
- Right rear engine hood lifter (Y127/2) (on model 204.3 with code (U60) Pedestrian protection)
- Analog crash output to the CDI control unit (N3/9) (with diesel engine) or to the ME-SFI [ME] control unit (N3/10) (with gasoline engine)
- Analog crash output to emergency call system control unit (N123/4) (on model 204.0/3/9 with code (359) TELEAID emergency call system or code (348) Emergency call/assist system)
Chassis CAN
The following signals are sent via chassis CAN, for example:
- Crash signal
- Display fault message request
- Driver belt buckle restraint system switch status
- Front passenger belt buckle restraint system switch status
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 | MODEL 204.0/2 as of model year 2009 Specification 1MODEL 204.3 Specification 1MODEL 204.9 Specification 1 | PE91.60-P-2105-97FAA | |
| MODEL 204.0/2 as of model year 2009 Specification 2MODEL 204.3 Specification 2MODEL 204.9 Specification 2 | PE91.60-P-2105-97FAB |