9-3 Hatchback (9400) L4-2.0L Turbo (B205) (2000)
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The lamp should light.
Checking the wiring harness
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness.
Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO
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See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Horn Switch/Rectifying the Lead - II
YES -
See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Horn Switch/Changing Components - II
Changing Components - II
Changing Components
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Change - Horn
After performing this procedure See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Horn Switch/Final Check
Rectifying the Lead - I
Rectifying the Lead