Suzuki Swift User Manual page 211

INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Is there DTC(s) other than HO2S-1
(DTC P0130)?
3 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). 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 (SFI FOR G13) 6-1-55
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 "R" and "G"
wires for open and
short, and connections
for poor connection.
If wires and connections
are OK, replace
HO2S-1.