System Overview: Signals
The table below summarizes the input signals to and output signals from the supplemental restraint system module (SRS). The signal types are divided into directly connected signals and CAN communication. The illustration below displays the same information with the Volvo component designations.
| Input signals |
Output signals |
| Directly connected: |
Directly connected: |
- Side impact sensors left C-post (7/108)
- Side impact sensors right C-post (7/109)
- Side impact sensor left B-post (7/115)
- Side impact sensor right B-post (7/116)
- Frontal collision sensor left front (7/179)
- Frontal collision sensor right front (7/178)
- Seat belt buckle passenger (3/94)
- Seat belt buckle driver (3/93)
- Seat belt (inertia) reel sensor driver (7/194) (USA/CDN only)
- Seat belt (inertia) reel sensor passenger (7/195) (USA/CDN only)
- Switch on/off, front passenger airbag (3/157) (not USA/CDN)
- Seat position sensor passenger (3/256) (USA/CDN only)
- Seat position sensor driver (3/255) (USA/CDN only).
|
- Central electronic module (CEM) (4/56), collision output signal
- Phone Module (PHM) (16/60), collision output signal
- Seat belt tensioner passenger (8/34)
- Seat belt tensioner driver (8/33)
- Seat belt tensioners waist driver (8/92) (only certain markets)
- Seat belt tensioner left rear (8/55)
- Seat belt tensioner right rear (8/56)
- Adaptive steering column (8/99) (USA/CDN only)
- Airbag passenger front stage 1 (8/31)
- Airbag passenger front stage 2 (8/32)
- Airbag driver front stage 1 (8/30)
- Airbag driver front stage 2 (8/61)
- Side impact protection (SIPS) bag left front (8/51)
- Side impact protection (SIPS) bag right front (8/52)
- Left inflatable curtain (8/66)
- Right inflatable curtain (8/67)
- Adaptive seatbelt force limiter driver (8/128) (USA/CDN only)
- Adaptive seatbelt force limiter passenger front (8/129) (USA/CDN only).
|
| Via local CAN communication (USA/CDN only): |
Via local CAN communication (USA/CDN only): |
- Occupant weight sensor (OWS) (7/93).
|
- Occupant weight sensor (OWS) (7/93).
|
| Via Controller Area Network (CAN) communication: |
Via Controller Area Network (CAN) communication: |
- Central electronic module (CEM) (4/56)
- Driver information module (DIM) (5/1).
|
- Central electronic module (CEM) (4/56)
- Driver information module (DIM) (5/1).
- Phone module (PHM) (16/60).
|
Courtesy of VOLVO CARS OF NORTH AMERICA.