Suzuki Baleno Manual page 1287

INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Is there DTC(s) other than HO2S-1 (DTC P0130)?
3 Check HO2S-1 signal.
1) Connect scan tool to DLC with ignition switch
OFF.
2) Warm up engine to normal operating tempera-
ture and keep it at 2000 r / min. for 60 sec.
3) Repeat racing engine (Repeat depressing ac-
celerator pedal 5 to 6 times continuously and
take foot off from pedal to enrich and enlean
A/ F mixture). See Fig. 1 and 2.
Does HO2S-1 output voltage deflect between 0.3
V and over 0.6 V repeatedly?
Fig.1 for Step 3
ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC) 6-1-57
ACTION
Fig.2 for Step 3
Normal
YES
Go to Step 2.
Go to applicable DTC
Diag. Flow Table.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 3.
Check "W" and "G / R" or
"Or" wires for open and
short, and connections
for poor connection.
If wires and connections
are OK, replace
HO2S-1.