Supplemental restraint system control unit, component description - GF91.60-P-4080CAM

MODEL 207.3/4 

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 31.5.13) 
• Seat occupancy LIN (LIN E2) (as of 1.6.13) 

Direct line 

The signals from the following components are read via direct lines:

• 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 [AKSE]) and without code (U10) Front passenger seat with weight sensing)
• Front passenger seat occupied recognition and ACSR [AKSE] (B48) (with code (U18) Automatic child seat recognition (ACSR [AKSE]) up to 31.5.13)
• 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)
• 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 31.5.13)
• Right front bumper pedestrian protection sensor (B151/3) (with code (U60) Pedestrian protection)
• Driver belt buckle restraint system switch (S68/3)
• Front passenger belt buckle restraint system switch (S68/4)

Chassis CAN (up to 31.5.13) 

The weight sensing system (WSS) control unit (N110) sends the status of the seat occupied recognition via interior CAN (CAN B), front SAM control unit with fuse and relay module (N10/1) and chassis CAN to the supplemental restraint system control unit.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Seat occupancy LIN (as of 1.6.13) 

The signals of the following components are read in by the supplemental restraint system control unit via seat occupancy LIN:

• Weight Sensing System (WSS) control unit (with code (U10) Front passenger seat with weight sensing)
• Front passenger seat occupied recognition and ACSR (with code (U18) Automatic child seat recognition (ACSR))

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 31.5.13) or chassis CAN 1 (as of 1.6.13) 

Direct line 

The following components are actuated via direct lines:

• Pyrofuse 150 (F32f150) (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) (model 207.3)
• Front passenger sidebag squib (R12/10) (model 207.3)
• 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 window bag squib (R12/22) (model 207.3)
• Right window bag squib (R12/23) (model 207.3)
• Driver kneebag squib (R12/25)
• Left head/thorax bag squib (R12/39) (model 207.4)
• Right head/thorax bag squib (R12/40) (model 207.4)
• 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))
• Left roll bar airbag squib (R12/45) (model 207.4)
• Right roll bar airbag squib (R12/46) (model 207.4)
• Left active engine hood squib (R12/49) (with code (U60) Pedestrian protection as of 1.6.13)
• Right active engine hood squib (R12/50) (with code (U60) Pedestrian protection as of 1.6.13)
• 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 31.5.13)
• Right rear engine hood lifter (Y127/2) (with code (U60) Pedestrian protection up to 31.5.13)
• 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)
• Digital crash output to emergency call system control unit (N123/4) (with code (359) TELEAID emergency call system)

Chassis CAN (up to 31.5.13) or chassis CAN 1 (as of 1.6.13) 

The following signals are sent via chassis CAN or chassis CAN 1:

• 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 207.3/4Specification 1	PE91.60-P-2105-97EAA
		MODEL 207.3/4Specification 2	PE91.60-P-2105-97EAB