Without Using SUZUKI Scan Tool

WARNING: This page is about a different car, the 2004 Suzuki XL-7 and 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Check that "Clock/Temp. display" (1) comes ON when ignition switch is turned to ON position.
Using service wire (2), ground diagnosis switch terminal in monitor coupler (3).
With the ignition switch ON position and leaving engine OFF, read DTC from "Clock/Temp. display". Refer to DTC Table .
After completing the check, turn the ignition switch OFF position and disconnect service wire from monitor coupler.

Fig 1: Checking DTC (Without Using SUZUKI Scan Tool)
Courtesy of SUZUKI OF AMERICA CORP.