9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
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Connect a jumper lead between pins 1 and 2 of the relay holder.
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The horn should sound.
Is the function correct?
NO
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See: Horn Failure / Steering Wheel Controls Partly Inoperative/Checking the Ground Lead
YES ^
See: Horn Failure / Steering Wheel Controls Partly Inoperative/Changing Components - I
Checking the Ground Lead
Checking The Ground Lead