Rear Wiper and Washer Switch Inspection
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.
Reference: REAR WIPER AND WASHER SWITCH REMOVAL AND INSTALLATION
Check for continuity between terminals at each switch position as shown in the following figure. If check result is not as specified, replace.