Front Axle Lock / Unlock Control
WARNING: This page is about a different car, the 2006 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
The 4WD control module actuates the axle lock actuator motor on the front differential assembly. It causes the axle lock clutch and the free axle hub in the differential case assembly to be engaged (locked) detecting the 4H/4L position of the transfer or disengaged (unlocked) detecting the 2H/N position of the transfer.