Suzuki Baleno Manual page 1294

6-1-64 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC)
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 "Bl" and "P" wire
for open and short, and
connection for poor
connection. If wire and
connection are OK, re-
place HO2S-2.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Repair or replace.
"P" or "Bl" circuit open
or HO2S-2 malfunction.
Check fuel system. Go
to DTC P0171 / P0172
Diag. Flow Table.