Suzuki WagonR+ RB310 Service Manual page 2373

6-14 ENGINE DIAGNOSIS
MALFUNCTION INDICATOR LAMP (MIL)
CHECK
1) Turn ON ignition switch (but the engine at stop) and check that
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
[Using SUZUKI scan tool]
1) Prepare SUZUKI scan tool (Tech-1).
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 Tool:
(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.
[Not using SUZUKI scan tool] (Vehicle without EGR valve)
1) Check malfunction indicator lamp referring to "Malfunction Indi-
cator Lamp Check" in this section.
2) With the ignition switch OFF position, disconnect SUZUKI scan
tool if connected and using service wire (1), ground diagnosis
switch terminal (2) in monitor coupler (3).
3) With the ignition switch ON position and leaving engine OFF,
read DTC from flashing pattern of malfunction indicator lamp.
Refer to "Diagnostic Trouble Code Table".
If lamp remains ON, go to "Diagnostic Flow Table A-1".
NOTE:
D If abnormality or malfunction lies in two or more areas, mal-
function indicator lamp indicates applicable codes three
times each.
And flashing of these codes is repeated as long as diagno-
sis terminal is grounded and ignition switch is held at ON
position.
D Take a note of diagnostic trouble code indicated first.
4) After completing the check, turn the ignition switch OFF position
and disconnect service wire from monitor coupler.