2003 Volvo XC90 T-6FACTORY OEM SERVICE PROCEDURE

System Overview: Signals

The table below summarizes input and output signals to and from the steering wheel angle sensor module (SAS). The signal types are divided into directly connected signals, serial communication and controller area network (CAN) communication.

Input signals Output signals
Directly connected:Β  Directly connected:Β 
  • The steering wheel angle sensorΒ  (7/91). Provides the steering wheel angle sensor module (SAS) with relevant information about the steering wheel angle from the straight ahead position, the speed of the steering wheel movements and about which direction the steering wheel is turned.
-
Via Controller Area Network (CAN) communication:Β  Via Controller Area Network (CAN) communication:Β 
-
  • Brake control module (BCM)Β  (4/16). The steering wheel angle sensor module (SAS) provides the brake control module (BCM) with information about the steering wheel angle from the straight ahead position, the speed of the steering wheel movements and about which direction the steering wheel is turned
  • Suspension module (SUM)Β  (4/84). The steering wheel angle sensor module (SAS) provides the suspension module (SUM) with information about the position of the steering wheel and the speed at which it is turned.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.