Suzuki WagonR+ RB310 Service Manual page 2415

6-56 ENGINE DIAGNOSIS
DTC P0130 HEATED OXYGEN SENSOR (HO2S) CIRCUIT
(DTC No.14) MALFUNCTION (SENSOR-1)
CIRCUIT DESCRIPTION
Fuse box
Ignition
switch
Main
fuse
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 accident
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:
– Indication of fuel level meter in combination meter: 1/4 or more
– 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
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 "ON BOARD TEST" or "PENDING DTC" mode.
To HO2S-2 heater
E21-7
E21-13 E21-10
To other sensor
Heater
POSSIBLE CAUSE
D Heated oxygen sensor-1 malfunction
D "Br/W" or "R" circuit open (poor connection) or short