Suzuki Swift User Manual page 218

6-1-62 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check exhaust system for leakage, loose
connection and damage.
Is it good condition?
3 Check HO2S-2 and Its Circuit.
Was HO2S-2 output voltage indicated on scan
tool in step 3) of DTC confirmation test less
than 1.275 V?
4 Check Short Term Fuel Trim.
Did short term fuel trim very within –20 – +20%
range in step 3) of DTC confirmation test?
ACTION YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
Check "R" and "G" wire
for open and short, and
connection for poor
connection. If wire and
connection are OK,
replace HO2S-2.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Repair or replace.
"G" or "R" circuit open or
HO2S-2 malfunction.
Check fuel system. Go
to DTC P0171/P0172
Diag. Flow Table.