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, LIN 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 sensor left C-post (7/108)
- Side impact sensor right C-post (7/109)
- Side impact sensor left B-post (7/115)
- Side impact sensor right B-post (7/116)
- Front impact sensor, front left (7/179) (certain markets and models only)
- Front impact sensor, front right (7/178) (certain markets and models only)
- Seat belt buckle left front (3/93)
- Seat belt buckle right front (3/94)
- Switch on/off, front passenger airbag (3/157) (not USA/CDN).
|
- Central electronic module (CEM) (4/56), collision output signal
- Phone Module (PHM) (16/60), collision output signal
- Seat belt tensioner left front (8/33)
- Seat belt tensioner right front (8/34)
- Seat belt tensioner left rear (8/55)
- Seat belt tensioner right rear (8/56)
- Seat belt tensioner center rear (8/62)
- Seat belt tensioner third row left (8/94) (XC90 7 seater only)
- Seat belt tensioner third row right (8/95) (XC90 7 seater only)
- Adaptive steering column (8/99) (XC90 USA/CDN only)
- Airbag passenger front stage 1 (8/31)
- Airbag passenger front stage 2 (8/32)
- Passenger airbag front stage 3 (8/124) (XC90 USA/CDN only)
- Airbag driver front stage 1 (8/30)
- Airbag driver front stage 2 (8/61)
- Driver airbag front stage 3 (8/123) (XC90 USA/CDN only)
- 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)
- Inflatable curtain left rear (8/96) (XC90 7 seater only)
- Inflatable curtain right rear (8/97) (XC90 7 seater only).
|
| Via LIN communication (certain markets and models only): |
Via LIN communication (certain markets and models 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)
- Upper electronic module (UEM) (4/70)
- Rear electronic module (REM) (4/58).
|
- Central electronic module (CEM) (4/56)
- Driver information module (DIM) (5/1)
- Phone module (PHM) (16/60)
- Upper electronic module (UEM) (4/70)
|
Courtesy of VOLVO CARS CORPORATION