Using SUZUKI Scan Tool

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.

Prepare SUZUKI scan tool.
With ignition switch turned OFF, connect it to data link connector (1) (DLC) located on underside of instrument panel of driver's side.
Special Tool
1. SUZUKI scan tool
  
  Fig 1: Locating Data Link Connector
  Courtesy of SUZUKI OF AMERICA CORP.
Turn ignition switch ON.
Read DTC according to instructions displayed on SUZUKI scan tool and print it or write it down.
Refer to SUZUKI Scan Tool Operator's Manual.

If communication between SUZUKI scan tool and BCM is not possible, check if SUZUKI scan tool is communicable by connecting it to BCM in another vehicle. If communication is possible in this case, SUZUKI scan tool is in good condition. Then check data link connector and serial data line (circuit) in the vehicle with which communication was not possible.
After completing the check, turn ignition switch off and disconnect SUZUKI scan tool from data link connector.