AWD

📖 YOUCANIC Automotive Glossary

AWD (All-Wheel Drive) distributes power to all four wheels automatically and continuously using a center differential or clutch pack. Full-time AWD sends power to all wheels at all times; on-demand AWD is primarily FWD until slip is detected, then engages the rear wheels. Systems vary in front/rear torque split capability — from 50/50 fixed to fully variable (0-100% to either axle).

AWD system diagnostics involve the transfer case control module, coupling actuator, and differential sensors. Common issues include coupling fluid degradation, actuator motor failure, and speed sensor faults causing AWD warning lights. The YOUCANIC UCAN-II reads AWD module codes on supported vehicles.