Suzuki GRAND VITARA Owner's Manual page 206

1A-151 Engine General Information and Diagnosis:
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester.
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Warm up engine to normal operating temperature.
4) Drive vehicle at 4000 rpm (engine speed) with 3rd gear (for M/T vehicle) or "3" range (for A/T vehicle).
5) Release accelerator pedal and with engine brake applied, keep vehicle coasting for 6 sec. or more (fuel cut
condition for 5 sec. or more) and stop vehicle.
6) For A/T model, drive vehicle at more than 3700 rpm for 10 sec.
7) Check pending DTC and DTC.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: ".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Vehicle speed signal check
Is vehicle speed displayed on scan tool in Step 4) and 5) of
"DTC Confirmation Procedure"?
3 DTC check in ABS hydraulic unit / control module
assembly
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ABS hydraulic unit / control module assembly for
DTC.
Is there any DTDC(s) in ABS hydraulic unit / control module
assembly?
Action Yes
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection: in Section
00".
Go to applicable DTC
diag. flow.
No
Go to "Engine and
Emission Control
System Check: ".
Go to Step 3.
Substitute a known-
good ECM and recheck.