DTC Check

WARNING: This page is about a different variant/trim than selected.

NOTE: The MIL is turned on when the ECM and/or TCM detect malfunction(s). Each ECU stores diagnostic information as the diagnostic trouble code (DTC) in its memory and outputs the DTC to the scan tool. Therefore, check both of the ECUs for any DTC with the scan tool because the DTC stored in ECU and TCM is not read and displayed at a time. However, each of the ECUs needs not to be checked with the generic scan tool because the DTC stored in ECM and TCM is read and displayed at a time.

Turn ignition switch OFF.
Connect SUZUKI scan tool to data link connector (DLC).
Special Tool
1. SUZUKI scan tool
  
  Fig 1: Connecting Suzuki Scan Tool To Data Link Connector
  Courtesy of SUZUKI OF AMERICA CORP.
Read DTC according to instructions displayed on SUZUKI scan tool and write it down. Refer to SUZUKI scan tool operator's manual for further details.
After completing the check, turn ignition switch OFF and disconnect SUZUKI scan tool from data link connector (DLC).