Drive Axles, Bearings and Joints: Description and Operation

Fig. 5 Cross-sectional View Of AWD Transaxle Case. Corolla Model Transaxle A241H w/Mechanical Lock Mechanism:

This system is identical to the one used on models equipped with the viscous coupling. The A241H automatic transaxle, Fig. 5, uses a mechanical locking type center differential, which enables the vehicle to get out of trouble spots more easily.