Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Steering Mounted Controls Assembly: Testing and Inspection
STEERING SWITCHINSPECTION 1.
Remove the airbag module from the steering wheel.
2.
Connect the tester as shown in the figure, then check resistance between terminals when each switch is pressed.
3.
If internal resistance is out of specification shown in the above table, replace the steering switch.