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XC90 2.5T AWD L5-2.5L Turbo VIN 59 B5254T2 (2003)

Relays and Modules > Relays and Modules - Steering and Suspension > Relays and Modules - Steering > Steering Mounted Controls Communication Module > Component Information > Description and Operation > Diagnostic Functions > Page 1145

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Steering Mounted Controls Communication Module: Description and Operation
Design

Design

Steering wheel buttons

The steering wheel buttons control functions and menu selection for:

-

Traffic information (option)

-

Audio (option)

-

Carphone (option)

-

Cruise control (option).

The signals from the steering wheel buttons are transmitted via serial communication.
The steering wheel buttons are connected in series to the steering wheel module (SWM) via contact reel in the steering wheel hub. The steering wheel
buttons are connected in the following order, counted from the contact reel:

1. Cruise control
2. Audio /carphone
3. Traffic information.

There are diagnostics for the steering wheel buttons.

Relays and Modules > Relays and Modules - Steering and Suspension > Relays and Modules - Steering > Steering Mounted Controls Communication Module > Component Information > Description and Operation > Diagnostic Functions > Page 1145

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