Suzuki Wagon R Plus RB310, Service Manual

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6-2-14 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Malfunction Indicator Lamp (MIL) Check
1) Turn ON ignition switch (but the engine at stop) and check
that MIL (1) lights.
If MIL does not light up (or MIL dims), go to “Malfunction Indi-
cator Lamp Does Not Come “ON” at Ignition Switch ON (But
Engine Stops)” for troubleshooting.
2) Start engine and check that MIL turns OFF.
If MIL remains ON and no DTC is stored in ECM, go to “Mal-
function Indicator Lamp Remains “ON” after Engine Starts”
for troubleshooting.
Diagnostic Trouble Code (DTC) Check
1) Prepare OBD 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 tool
(A): SUZUKI scan tool
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 possi-
ble, 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 serial data line (circuit) in the vehicle with
which communication was not possible.
5) After completing the check, turn ignition switch off and dis-
connect scan tool from data link connector.
Diagnostic Trouble Code (DTC) Clearance
1) Connect OBD generic scan tool or SUZUKI scan tool to data
link connector in the same manner as when making this con-
nection for DTC check.
2) Turn ignition switch OFF and then ON.
3) Erase DTC and pending DTC according to instructions dis-
played on scan tool. Refer to scan tool operator’s manual for
further details.
4) After completing the clearance, turn ignition switch off and
disconnect scan tool from data link connector.
1
1
(A)