[Answer] Tech A says that all 3-channel ABS systems use only 3 wheel speed sensors. Tech B says that a 4-channel ABS system means that fluid pressure is independently regulated to each of the wheels during an ABS stop. Who is right?A. Tech AB. Tech BC. BothD. Neither

Answer: B. The number of wheel speed sensors used on an ABS system does not necessarily indicate the number of channels the system has. A channel is an independently controlled fluid path from the hydraulic modulator to the wheel. Therefore a 3-channel system on a car can have a wheel speed sensor at each wheel even though there are only 3 individually controlled hydraulic circuits: two in the front and one in the rear.
Tech A says that all 3-channel ABS systems use only 3 wheel speed sensors. Tech B says that a 4-channel ABS system means that fluid …

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