Suzuki 2006 SX4 Service Manual page 120

1A-76 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, on a level road.
NOTE
Check to make sure that the 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)
• Engine coolant temperature: 70 °C (158 °F) to 150 °C (302 °F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
• The following DTCs are not detected: DTCs related to MAF sensor, ECT sensor, IAT sensor,
barometric pressure sensor and VSS
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Drive vehicle at 40 mph (65 km/h) or higher.
5) Keep above vehicle speed for 6 min. or more.
6) Stop vehicle.
7) Check whether O2 sensor readiness/monitoring test has completed or not by using scan tool.
If O2 sensor readiness/monitoring test has not completed, check vehicle conditions (environmental) and repeat
Steps 3) through 6).
8) Check DTC and pending DTC.
DTC Troubleshooting
Step
1 Was "Engine and Emission Control System Check"
performed?
2 DTC check
Is there DTC(s) other than P0133?
3 A/F sensor circuit check
1) Disconnect connector from A/F sensor with ignition
switch turned OFF.
2) Check for proper terminal connection to A/F sensor
connector.
3) If connections are OK, check that A/F sensor circuit is as
follows.
• Wiring harness resistance of each "Signal (+) circuit of
A/F sensor" and "Signal (–) circuit of A/F sensor" is
less than 1 Ω.
Is it in good condition?
Action Yes
Go to Step 2.
Go to applicable DTC
diagnosis flow.
Replace A/F sensor.
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Repair or replace
defective wiring harness
/ connector.