9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
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The SID unit uses the information to activate the horn and send bus information for the audio functions.
On cars without steering wheel controls (cars without audio system), only the steering wheel switch for the horn is used.
Diagnostics
There is an open circuit/short circuit for more than 5 minutes, diagnostic trouble code B2371 is generated. Applies only to cars with Saab Audio System
