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 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)
- Side impact sensor (pressure sensor) left front door (7/208)
- Side impact sensor (pressure sensor) right front door (7/209)
- Seat belt buckle driver (3/93)
- Seat belt buckle passenger (3/94)
- Belt buckle, rear left (certain markets only) (3/217)
- Belt buckle, rear centre (certain markets only) (3/218)
- Belt buckle, rear right (certain markets only) (3/219)
- switch, front passenger airbag (3/157) (not USA/CAN)
- Front passenger seat position sensor (3/256) (USA/CAN only)
- Driver's seat position sensor (3/255) (USA/CAN only)
- Roll-over sensor (installed in Supplemental Restraint System Module (SRS) (4/9)
|
- Central electronic module (CEM) (4/56), collision output signal
- Phone Module (PHM) (16/60), collision output signal
- Seat belt tensioner driver (8/33)
- Belt tensioner passenger front (8/34)
- Belt tensioner, waist, driver (8/92) (only certain markets)
- Belt tensioner, waist, passenger (8/93) (only certain markets)
- Seat belt tensioner left rear (8/55)
- Belt tensioner center rear (8/62)
- Seat belt tensioner right rear (8/56)
- Adaptive steering column (8/99) (USA/CAN only)
- Front passenger airbag (8/124)
- Driver airbag (8/123)
- 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)
- Adaptive seatbelt force limiter passenger front (8/129)
- Warning lamp, front passenger airbag (PAD) (10/22)
- Warning light activated airbag passenger (PAE) (10/22) (not USA/CAN)
|
| 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)
|
| Via sensor-CAN communication: |
Via sensor-CAN communication: |
- occupant weight sensor (OWS) (7/93) (USA/CAN only)
- Closing velocity module (CVM) (4/125)
- Forward Sensing Module (FSM) (4/80)
|
- occupant weight sensor (OWS) (7/93) (USA/CAN only)
- Forward Sensing Module (FSM) (4/80)
- Brake control module (BCM) (4/16)
|
 Courtesy of VOLVO CARS CORPORATION
|