Suzuki Jimny Service Manual page 446

DTC DETECTING CONDITION
• While vehicle running at constant speed under other than
high load.
• Time from rich or lean switching command is output till HO2S-
2 output voltage crosses 0.45 V less than specified value.
✱ ✱ ✱ ✱ 2 driving cycle detection logic, monitoring once / 1 driving.
DTC CONFIRMATION PROCEDURE
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Turn ignition switch OFF.
Clear DTC with ignition switch ON, check vehicle and environmental condition for :
– Altitude (barometric pressure) : 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
– Ambient temp. : –10 °C, 14 °F or higher
– Intake air temp. : 70 °C, 158 °F or lower
– Engine coolant temp. : 70 – 110 °C, 158 – 230 °F
2) Start engine and drive vehicle at 35 – 45 mph, 55 – 65 km/h for 8 min. or longer.
While this driving, if "Catalyst Monitoring TEST COMPLETED" is displayed in "READINESS TESTS" mode
and DTC is not displayed in "DTC" mode, confirmation test is completed.
If "TEST NOT COMPLTD" is still being displayed, continue test driving.
3) Decrease vehicle speed at 30 – 40 mph, 50 – 60 km/h, and hold throttle valve at that opening position for 2
min. and confirm that short term fuel trim vary within – 20% – +20% range.
4) Stop vehicle (do not turn ignition switch OFF) and confirm test results according to following "Test Result
Confirmation Flow Table".
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-89
POSSIBLE CAUSE
• Exhaust gas leak
• Three way catalytic converter malfunction
• Fuel system malfunction
• HO2S-2 malfunction
• HO2S-1 malfunction