System Overview: Signals
The table below summarizes the input signals to and output signals from the suspension module (SUM). The signals 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: |
- Height sensor, suspension (7/118, 7/119, 7/120, 7/121):
- measures the vertical position of the suspension, individually for each wheel.
- Acceleration sensor, body (7/87, 7/88, 7/89):
- measures the body's vertical speed change.
- Switch (3/225):
- driving mode
"COMFORT", "SPORT"
or
"ADVANCED"
can be selected.
|
- Valve deployment, shock absorber (8/20, 8/21, 8/22, 8/23):
- solenoids in the shock absorbers.
- Switch (3/225):
- selected driving mode indicated.
|
| Via Controller Area Network (CAN) communication: |
Via Controller Area Network (CAN) communication: |
 Courtesy of VOLVO CARS CORPORATION
|
- the vehicle speed
- actual brake mode (ABS, DSTC/ESC, EBA)
- brake pressure
- actual and required yaw rate
- lateral acceleration.
 Courtesy of VOLVO CARS CORPORATION
|
- required and actual engine torque
- engine speed
 Courtesy of VOLVO CARS CORPORATION
|
- steering wheel angle and steering wheel angle speed.
 Courtesy of VOLVO CARS CORPORATION
|
- back-up gear status
- global parameters
- intensity of the lighting in the switch from the light switch module (LSM).
 Courtesy of VOLVO CARS CORPORATION
|
- the intensity of the lighting in the switch via the twilight sensor.
|
 Courtesy of VOLVO CARS CORPORATION
|
- a text message indicating that Four-C (Continuously Controlled Chassis Concept) is not working.
 Courtesy of VOLVO CARS CORPORATION
|
- from height sensor, used for headlamp range adjustment.
|