Suzuki Swift Sport 2004 Service & Repair Manual page 127

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 tester, on a level road.
NOTE
Check to make sure that following conditions are satisfied when using this "DTC Confirmation
Procedure".
• Intake air temperature at engine start: –10 °C (14 °F) to 80 °C (176 °F)
• Intake air temperature: –10 °C (14 °F) to 70 °C (158 °F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch, clear DTC.
3) Start engine.
4) Drive vehicle at 40 mph (60 km/h) or higher for 20 min. or more.
5) Stop vehicle.
6) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to "Inspection of ECM and Its Circuits".
• Upon completion of inspection and repair work, perform "DTC Confirmation Procedure" and
confirm that the trouble has been corrected.
Step
1 Was "Engine and Emission Control System Check"
performed?
2 DTC check
1) With ignition switch turned OFF, install scan tool to DLC.
2) Turn ON ignition switch and check DTC with scan tool.
Is DTC P0118 displayed?
3 Engine coolant temp. check
1) Turn ON ignition switch and check engine coolant temp.
displayed on scan tool.
2) Warm up engine to normal operating temp. and check
engine coolant temp. displayed on scan tool.
Does engine coolant temp. vary more than 1
rise higher than 70
4 Thermostat check
Is there a symptom due to thermostat remaining open (it
takes a long time before vehicle heater becomes effective or
before engine is warmed to normal operating temp., etc.)?
Action
° °
C (158 F)?
Engine General Information and Diagnosis:
Go to Step 2.
Go to "DTC P0118:
Engine Coolant
Temperature Circuit
High".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
° °
C (1 F) and
Check thermostat
referring to "Thermostat
Inspection in Section
1F".
Yes
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Go to Step 4.
Go to Step 5.
1A-77
No