Control System

The SH-AWD control system consists of a SH-AWD control unit, the PCM, the VSA modulator-control unit, and various sensors and switches that detect the steering angle, the lateral G force, the yaw, and the vehicle speed. An oil temperature sensor and a speed sensor are located on in the rear differential. The control units exchange information via the CAN communication lines. The SH-AWD control unit has a self-diagnostic function. If a malfunction is detected, the SH-AWD control unit turns on the SH-AWD indicator in the gauge assembly and the system goes into fail-safe mode. When in fail-safe mode, the vehicle disable the SH-AWD differential. The vehicle defaults to front wheel drive, and the PCM reduces available engine output.