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Test the low pressure warning signal:
A.  Once a month.
B.  Once a week.
C.  Twice a week.
D.  Before every trip.
It is essential that your low pressure warning light function properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.
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