Dtc Check - Suzuki Swift Sport 2004 Service & Repair Manual

1A-26 Engine General Information and Diagnosis:

DTC Check

NOTE
• There are two types of OBD system
depending on the vehicle specification.
For details, refer to "Precaution on On-
Board Diagnostic (OBD) System".
• The MIL is turned on when the ECM and/or
TCM detect malfunction(s). Each ECM and
TCM 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 ECM and TCM
for any DTC with the SUZUKI scan tool
because the DTC stored in ECM and TCM
is not read and displayed at a time.
However, each of the ECM and TCM 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.
Using Scan Tool
1) Prepare OBD generic scan tool or SUZUKI scan
tool.
2) With ignition switch turned OFF, connect it to DLC
(1) located on underside of instrument panel at
driver's seat side.
Special tool
(A): SUZUKI scan tool
(A)
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 them or write them 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 serial data line (circuit) in the vehicle with which
communication was not possible. If connector and
circuit are OK, check that power supply and ground
circuits of ECM and DLC are in good condition
referring to "ECM Power and Ground Circuit Check".
5) After completing the check, turn ignition switch OFF
S7RS0B1104003
Without Using Scan Tool (Hong Kong Model)
1) Turn ignition switch to OFF position.
2) Using service wire, ground diagnosis switch terminal
3) Turn ON ignition switch and check DTC displayed on
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I4RS0B110026-01
4) After completing the check, turn ignition switch to
and disconnect scan tool from data link connector.
(1) of diagnosis connector (2).
odometer (3) of combination meter.
When more than 2 DTCs are stored in memory,
blinking for each DTC starts with the smallest DTC
number in increasing order. Also, DTC is indicated
repeatedly until the ignition switch is turned OFF or
disconnect service wire.
2
NOTE
When no DTC is detected, display on
odometer of combination meter is "0000".
OFF position and disconnect service wire from
diagnosis connector.
3
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I5RS0C110009-01