Reading and Clearing Diagnostic Trouble Codes

DTC Check

NOTE: The MIL is turned on when the ECUs 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.
2. Connect SUZUKI scan tool to data link connector (DLC).





3. 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.
4. After completing the check, turn ignition switch OFF and disconnect SUZUKI scan tool from data link connector (DLC).

DTC Clearance

NOTE:
DTC and freeze frame data stored in TCM memory are also cleared in following cases. Be careful not to clear them before keeping their record.
^ When power to TCM is cut off (by disconnecting battery cable, removing fuse or disconnecting TCM connector).
^ When the same malfunction (DTC) is not detected again during 40 engine warm-up cycles.

1. Turn ignition switch OFF.
2. Connect SUZUKI scan tool to data link connector (DLC) (1).





3. Clear DTC according to instructions displayed on SUZUKI scan tool. Refer to SUZUKI scan tool operator's manual for further details.
4. Clear DTC according to instructions displayed on SUZUKI scan tool. Refer to SUZUKI scan tool operator's manual for further details.