4WD Control System Check
WARNING: This page is about a different car, the 2003 Suzuki Vitara, 2002 Suzuki Vitara, 2001 Suzuki Vitara, 2000 Suzuki Vitara, and 1999 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Before performing the trouble diagnosis, check that the transfer and front differential are in good condition and there is no air leakage from air hoses and the actuator. See 4WD CONTROL SYSTEM INSPECTION and AIR PUMP ASSEMBLY INSPECTION .