Suzuki Baleno Manual page 1361

ENGINE GENERAL INFORMATION AND DIAGNOSIS (J18 ENGINE WITH WU TWC) 6-2-13
MALFUNCTION INDICATOR LAMP (MIL)
CHECK
1) Turn ON ignition switch (but the engine at stop) and check that
or
MIL lights.
If MIL does not light up (or MIL dims), go to "Diagnostic Flow
Table A-1" for troubleshooting.
2) Start engine and check that MIL turns OFF.
If MIL remains ON and no DTC is stored in ECM, go to "Diagnos-
tic Flow Table A-2" for troubleshooting.
DIAGNOSTIC TROUBLE CODE (DTC) CHECK
1) Prepare generic scan tool or SUZUKI scan tool.
2) With ignition switch OFF, connect it to data link connector (DLC)
(1) located on underside of instrument panel at driver's seat side.
Special Tools:
(A): SUZUKI scan tool
(B): Mass storage cartridge
(C): 16/14 pin DLC cable
3) Turn ignition switch ON and confirm that MIL lights.
4) Read DTC, pending DTC and freeze frame data according to
instructions displayed on scan tool and print it or write it down.
Refer to scan tool operator's manual for further details.
If communication between scan tool and ECM is not possible,
check if scan tool is communicable by connecting it to ECM in
another vehicle. If communication is possible in this case, scan
tool is in good condition. Then check data link connector and se-
rial data line (circuit) in the vehicle with which communication
was not possible.
5) After completing the check, turn ignition switch off and discon-
nect scan tool from data link connector.