Suzuki Liana RH413, Service Manual

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1A-59 Engine General Information and Diagnosis:
1) Turn ignition switch OFF. Clear DTC with ignition
switch ON.
2) Warm up engine to normal operating temperature.
3) Drive vehicle at 50 – 60 km/h, 30 – 40 mph for 2 min.
4) Stop vehicle and run engine at idle for 2 min.
5) Check DTC and pending DTC.
DTC Troubleshooting
DTC P0134: Heated Oxygen Sensor (HO2S) Circuit No Activity Detected (Sensor-1)
S3RH0A1104031
Wiring Diagram
DTC Detecting Condition and Possible Cause
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a
place where there is no traffic or
possibility of a traffic accident and very
careful during testing to avoid occurrence
of an accident.
• Road test should be carried out with 2
persons, a driver and tester, on a level
road.
NOTE
Check to make sure that the following
conditions are satisfied when using this DTC
confirmation procedure.
• 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
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Is there DTC(s) other than HO2S-1 (DTC P0133)? Go to applicable DTC
diag. flow. Replace HO2S-1.
ECM
WHT BLU
WHT ORN
C41-10
1
C41-13
C41 (31P) G04 (24P) G03 (17P)
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 31
5 6 1 2 3 4 5 6 7
11 12 9 10 11 13 12 14 15 16
16 17
1 2
7 8
13 14
3 4
9 10
15 17 18
8
19 20 21 22 23 24
ORN
I3RH0A110015-01
1. From other sensors
DTC detecting condition Possible cause
• Engine warmed up.
• While running under other than high load and high engine
speed conditions or at specified idle speed (engine is in
closed loop condition), HO2S-1 output voltage is high or low
continuously.
*2 driving cycle detection logic, Continuous monitoring
• “WHT” or “ORN” circuit open or short
• Heated oxygen sensor malfunction
• Fuel system malfunction
• Exhaust gas leakage