Heavy Duty Equipment Technician Red Seal Exam Prep · Question
An ABS (Anti-lock Braking System) continuously monitors what specific parameter to detect impending wheel lock-up?
ABS systems primarily use wheel speed sensors to constantly monitor the rotational speed of each wheel. When a significant difference in wheel speeds or rapid d
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Question: An ABS (Anti-lock Braking System) continuously monitors what specific parameter to detect impending wheel lock-up?
Answer options:
- Brake pedal position
- Vehicle speed sensor input
- Hydraulic pressure at each wheel ✅ Wheel speed sensor input
Correct answer: Wheel speed sensor input
Explanation: ABS systems primarily use wheel speed sensors to constantly monitor the rotational speed of each wheel. When a significant difference in wheel speeds or rapid deceleration of a single wheel is detected, the ABS module modulates brake pressure to prevent lock-up.
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