Differential Left Case
WARNING: This page is about a different car, the 2003 Suzuki XL-7 and 2003 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Check clutch for smooth movement by pushing plate of axle lock clutch fitted to differential left case. Also, check return spring (1) for settling.
Check teeth of axle lock clutch (2) fitted to differential right case for wear, damage and any other faulty condition.