Suzuki Wagon R Manual page 402

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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 "Br/W"
wire for open and short,
and connection for poor
connection. If wire and
connection are OK,
replace HO2S-2.
ENGINE DIAGNOSIS 6-63
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Repair or replace.
"Br/W" or "Bl" circuit
open or HO2S-2
malfunction.
Check fuel system. Go
to DTC P0171/P0172
Diag. Flow Table.

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