2013 Volvo XC70 T-6FACTORY OEM SERVICE PROCEDURE

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:
  • -
    GLL160349
    • the vehicle speed
    • actual brake mode (ABS, DSTC/ESC, EBA)
    • brake pressure
    • actual and required yaw rate
    • lateral acceleration.
  • -
    GLL175104
    • required and actual engine torque
    • engine speed
  • -
    GLL179272
    • steering wheel angle and steering wheel angle speed.
  • -
    GLL175395
    • back-up gear status
    • global parameters
    • intensity of the lighting in the switch from the light switch module (LSM).
  • -
    GLL178454
    • the intensity of the lighting in the switch via the twilight sensor.
  • -
    GLL153113
    • a text message indicating that Four-C (Continuously Controlled Chassis Concept) is not working.
  • -
    GLL175022
    • from height sensor, used for headlamp range adjustment.
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