Turn Signal Light Switch (In Lighting Switch) Inspection
WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Reference: TURN SIGNAL LIGHT SWITCH (IN LIGHTING SWITCH) REMOVAL AND INSTALLATION
Check for continuity between terminals at each switch position. If check result is not as specified, replace switch.