What should you check if your air pressure warning light is activated?

Prepare for the North Carolina CDL Air Brakes Test. Study with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

When the air pressure warning light is activated, it is crucial to check the air compressor function because the air compressor is responsible for generating the air pressure needed in the braking system. If the air compressor is not functioning properly, it may fail to build sufficient air pressure, which can compromise the effectiveness of the air brakes and pose a serious safety risk.

Maintaining adequate air pressure is essential for the operation of air brakes, as insufficient pressure can lead to brake failure. Monitoring the air compressor will help ensure that it is working efficiently to maintain the necessary pressure for safe braking.

The other options do not directly address the issue of air pressure in the braking system; brake fluid levels are relevant to hydraulic brake systems rather than air brakes, battery voltage does not impact air compressor operation directly, and speedometer readings provide no insight into air pressure issues.

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