"2WD <--> 4WD" switch
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.
Measure resistance between "b" and "c" terminals of 2WD/4WD switch.
If measured resistance is out of specification below, replace 2WD/4WD switch.
"2WD" <--> "4WD" switch resistance
"2WD" <--> "4WD" switch released: 950 - 1050 Ω
"2WD" <--> "4WD" switch kept pushing: 0 - 1 Ω