9-3 Hatchback (9400) L4-2.0L Turbo (B205) (2000)
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Horn Failure/Steering Wheel Switch Unit Failure
Fault symptoms
The horn does not work and there is no diagnostic trouble code.
Some of the steering wheel control buttons do not work, no diagnostic trouble code.
Diagnostic help
The horn button can be read with the diagnostics tool.
The horn output can be activated with the diagnostics tool.
Check wiring harness.
