9-3 SE Hatchback (9400) L4-2.0L Turbo (B205) HO (2000)
The reading should be 0 V - 0.35 V
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
-
See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Radio Control Buttons/Rectifying the Lead - I
YES -
See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Radio Control Buttons/Changing Components
Changing Components
Changing Components
-
Change - Steering wheel switch unit
After performing this procedure See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Radio Control Buttons/Final Check
Rectifying the Lead - I
Rectifying The Lead