Suzuki GA413 Service Manual page 827

DTC P0130 HEATED OXYGEN SENSOR (HO2S) CIRCUIT MALFUNCTION
(SENSOR-1)
CIRCUIT DESCRIPTION
1. Heated oxygen sensor-1 (HO2S-1)
DTC DETECTING CONDITION
D When running at idle speed after engine warmed up
and running at specified vehicle speed, HO2S-1
output voltage does not go below 0.3 V or over
0.6 V.
: 2 driving cycle detection logic, Monitoring once/1
driving.
DTC CONFIRMATION PROCEDURE
WARNING:
D 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.
D Road test should be carried out with 2 persons, a driver and a tester.
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.: –105C, 145F or higher
– Intake air temp.: 705C, 1585F or lower
2) Warm up engine to normal operating temperature.
3) Drive vehicle at 30 – 40 mph, 50 – 60 km/h for 2 min.
4) Stop vehicle and run engine at idle for 2 min.
5) Check DTC in "DTC" mode and pending DTC in "PENDING DTC" mode.
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-51
POSSIBLE CAUSE
D Heated oxygen sensor-1 malfunction
D "BLU/YEL", "BLU" or "RED" circuit open (poor con-
nection) or short