Technician A says in a full-time AWD transmission/transfer case, the hydraulic clutch that controls slippage in the 4WD system is controlled by inputs from the ABS wheel speed sensors. Technician B says some full-time AWD transfer cases can lock the differential so that the front and rear driveshafts must turn at the same speed. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because in many full-time AWD systems, the hydraulic clutch that manages power distribution (and thus controls slippage) between the front and rear axles indeed receives input from the ABS wheel speed sensors. This helps the system to dynamically adjust the power distribution based on the traction conditions detected by the wheel speeds. Technician B is also correct because some full-time AWD systems have the capability to lock the center differential (or equivalent mechanism), ensuring that the front and rear driveshafts rotate at the same speed, which is particularly useful in low-traction situations to ensure equal power distribution to all wheels.

Technician a Says in a Full-Time AWD Transmission/transfer Case, the Hydraulic