9-3 Hatchback (9400) L4-2.0L Turbo (B205) (2000)
Checking The Control Module's Sensor Input
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Contact SID.
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Turn the Ignition switch to the ON position.
Reading: Steering Wheel Control
The reading should be 4.6 V - 5 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
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See: Horn Failure/Steering Wheel Switch Unit Failure/NO/Horn Switch/Rectifying the Lead - III
YES -
Continue With Checking The Control Module's Sensor Input