Back Up Light Switch Inspection
WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara, 2007 Suzuki Grand Vitara, and 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Reference: BACK UP LIGHT SWITCH REMOVAL AND INSTALLATION
Check back up light switch for function using ohmmeter.
If resistance is not as specified below, replace back up light switch.
Back up lamp switch specification
Switch ON (Push): Continuity
Switch OFF (Release): No continuity