Q
60. How can you test the low pressure warning signal?
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AWhile the engine is running, step on and off the brake pedal.
BShut off the engine and see if the air pressure leaks down.
CShut off the engine with enough air pressure, turn on the electrical power and step on and off the brake pedal until the low air pressure warning signal comes on.
Detailed Explanation
The correct answer is "Shut off the engine with enough air pressure, turn on the electrical power and step on and off the brake pedal until the low air pressure warning signal comes on.". This is based on federal CDL regulations and safety standards.
Correct Answer: Shut off the engine with enough air pressure, turn on the electrical power and step on and off the brake pedal until the low air pressure warning signal comes on.
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