Suzuki Liana RH418, Supplementary Service Manual

Page: 68 / 371

1A-55 Engine General Information and Diagnosis:
DTC Troubleshooting
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 P0130)? Go to applicable DTC
diag. flow. Go to Step 3.
3 Check HO2S-1 signal
1) Connect scan tool to DLC with ignition switch OFF.
2) Warm up engine to normal operating temperature and
keep it at 2000 r/min. for 60 sec.
3) Repeat racing engine (Repeat depressing accelerator
pedal 5 to 6 times continuously and take foot off from
pedal to enrich and enlean A/F mixture).
Does HO2S-1 output voltage deflect between 0.3 V and over
0.6 V repeatedly?
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section 00
in related manual”. Check “WHT” and
“ORN” wires for open
and short, and
connections for poor
connection.
If wires and connections
are OK, replace HO2S-
1.
I3RH0B110024-01