Suzuki GA413 Service Manual page 423

MALFUNCTION INDICATOR LAMP
("CHECK ENGINE" LIGHT) CHECK
1) Turn ignition switch ON position, leaving engine OFF and check
that malfunction indicator lamp ("CHECK ENGINE" light) lights.
If lamp does not light up, go to "A-1 MIL Circuit Check" in this
section. If lamp flushes, go to "A-2 MIL Circuit Check" in this sec-
tion.
2) Start engine and check that malfunction indicator lamp
("CHECK ENGINE" light) turns OFF.
If lamp remains ON, go to "Diagnostic Trouble Code Check" in
this section.
DIAGNOSTIC TROUBLE CODE (DTC) CHECK
[Using SUZUKI scan tool]
1) Check malfunction indicator lamp ("CHECK ENGINE" light).
Refer to "Malfunction Indicator Lamp ("CHECK ENGINE" light)
Check" in this section.
2) Turn ignition switch OFF position.
3) After setting cartridge to SUZUKI scan tool, connect it to data
link connector (DLC) located on underside of instrument panel
1. DLC
at driver's seat side.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16/14 pin DLC cable)
4) Turn ignition switch ON position, leaving engine OFF.
5) Read DTC according to instructions displayed on SUZUKI scan
tool and print it or write it down. Refer to SUZUKI scan tool oper-
ator's manual for further details.
If communication between SUZUKI scan tool and ECM is not
possible, check if SUZUKI scan tool is communicable by con-
necting it to ECM in another vehicle. If communication is pos-
sible in this case, SUZUKI scan tool is in good condition. Then
check data link connector and serial data line (circuit) in vehicle
with which communication was not possible.
6) After completing the check, turn ignition switch OFF position
and disconnect SUZUKI scan tool from data link connector
(DLC).
ENGINE AND EMISSION CONTROL SYSTEM 6E-13