Vehicle Systems and Malfunctions Flashcards

During a pre-trip inspection, you notice an oil leak forming a puddle under the engine. What should you do?

Answer: Do not operate the vehicle until it is repaired

A leak that could affect safe operation must be corrected before the vehicle is driven.

The low air pressure warning device on a truck with air brakes must activate at or before what pressure?

Answer: 60 psi

The low air pressure warning must come on at 60 psi or higher to alert the driver in time.

What does an ABS malfunction lamp staying lit while driving indicate?

Answer: The ABS is not working but normal brakes still function

An illuminated ABS lamp means anti-lock braking is disabled, but standard braking still works.

A steering wheel that has excessive play (more than about 10 degrees) most likely indicates a problem with what system?

Answer: The steering system

More than roughly 10 degrees of free play signals worn steering components that need repair.

Why should you check the color and level of engine coolant during inspection?

Answer: To prevent engine overheating

Proper coolant level and condition keep the engine from overheating.

If your dash temperature gauge climbs into the red zone while driving, what is the safest response?

Answer: Pull over safely and shut down to prevent damage

An overheating engine should be stopped safely to avoid severe damage.

A cracked or broken leaf spring found during inspection is considered what?

Answer: An out-of-service defect

Broken suspension components like leaf springs are out-of-service defects.