Suzuki SWIFT RS415 2017, Руководство по обслуживанию

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Engine General Information and Diagnosis: 1A-93
5 Wire circuit check
1) Turn OFF ignition switch.
2) Remove ECM from its bracket with ECM connectors
connected.
3) Measure resistance between “WHT” wire terminal of
HO2S-1 connector and “C37-10” terminal of ECM
connector.
Is resistance less than 5
:
?
Go to Step 6. “WHT” wire is high
resistance circuit or
open circuit. Poor “C37-
10” terminal connection.
Faulty ECM ground. If
they are OK, substitute
a known-good ECM and
recheck.
6 Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turn OFF.
2) Measure resistance between “WHT” wire terminal of
HO2S-1 connector and vehicle body ground.
Is resistance infinity?
Go to Step 7. “WHT” wire is shorted to
ground circuit.
7 HO2S-1 signal circuit check
1) Measure voltage between “WHT” wire terminal of HO2S-
1 connector and vehicle body ground.
Is voltage 0 V?
Go to Step 8. “WHT” wire is shorted to
other circuits.
8 HO2S-1 heater circuit check
1) Check HO2S-1 heater circuit referring to “DTC P0031 /
P0032: HO2S Heater Control Circuit Low / High
(Sensor-1): ”.
Is circuit in good condition?
Go to Step 9. Repair HO2S-1 circuit.
9 Exhaust system check
1) Check exhaust system for exhaust gas leakage.
Is it OK?
Go to Step 4 in “DTC
P0171 / P0172: Fuel
System Too Lean / Rich:
”.
If it is in good condition,
go to Step 10. Repair leakage of
exhaust system for
leakage.
10 Air intake system check
1) Check air intake system for clog or leak.
Is it OK?
Check HO2S-1 referring
to “Heated Oxygen
Sensor (HO2S-1 and
HO2S-2) Heater On-
Vehicle Inspection: in
Section 1C”.
If it is in good condition,
substitute a known-
good ECM and recheck. Repair or replace air
intake system.
Step Action Yes No