Dtc Check; Dtc Clearance - Suzuki GRAND VITARA 2005 Service Manual

1A-16 Engine General Information and Diagnosis:
Step 2: Visual Inspection
As a preliminary step, be sure to perform visual check of
the items that support proper function of the engine
referring to "Visual Inspection: ".
Step 3: DTC Check, Record and Clearance
First, check DTC, referring to "DTC Check: ". If DTC is
indicated, record and clear DTC by referring to "DTC
Clearance: ".
Attempt to diagnose a trouble based on DTC in this step
only or failure to clear the DTC in this step will lead to
incorrect diagnosis, trouble diagnosis of a normal circuit
or difficulty in troubleshooting.
Step 4: Engine Basic Inspection and Fault Finding-
Customer Complaints
Perform basic engine check according to "Engine Basic
Inspection: " first. When the end of the flow table has
been reached, check the parts of the system suspected
as a possible cause referring to "Fault Finding-Customer
Complaints: " and based on symptoms appearing on the
vehicle (symptoms obtained through steps of customer
complaint analysis, trouble symptom confirmation and/or
basic engine check) and repair or replace faulty parts, if
any.
Step 5: Recheck DTC
Refer to "DTC Check: " for checking procedure.
Step 6: Troubleshooting for DTC (See each DTC
Diag. Flow)
Based on the DTC indicated in Step 5 and referring to
the applicable DTC diag. flow, locate the cause of the
trouble, namely in a sensor, switch, wire harness,
connector, actuator, ECM or other part and repair or
replace faulty parts.
Step 7: Intermittent Problems Check
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, connector, etc.), referring to
"Intermittent and Poor Connection Inspection: in Section
00 in related manual" and related circuit of DTC
recorded in Step 2.
Step 8: Final Confirmation Test
Confirm that the problem symptom has gone and the
engine is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once
and then recheck DTC and confirm that no DTC is
indicated.

DTC Check

1) Prepare SUZUKI scan tool or OBD generic scan
tool.
2) 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
(A)
3) Turn ignition switch ON.
4) Read DTC, 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.
5) After completing the check, turn ignition switch OFF
and disconnect scan tool from data link connector.

DTC Clearance

1) Connect SUZUKI scan tool to data link connector in
the same manner as when making this connection
for DTC check.
2) Turn ignition switch OFF and then ON (but engine at
stop).
3) Erase DTC according to instructions displayed 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.
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