Suzuki Liana RH413, Service Manual

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1A-89 Engine General Information and Diagnosis:
Test Result Confirmation Flow
DTC Troubleshooting
DTC P0443: Purge Control Valve Circuit Malfunction
S3RH0A1104044
Wiring Diagram
DTC Detecting Condition and Possible Cause
DTC Confirmation Procedure
1) Clear DTC with ignition switch ON.
2) Select “DTC” mode on scan tool and check DTC.
Step Action Yes No
1 1) Check DTC and pending DTC in “DTC” mode.
Is DTC or pending DTC displayed?
Proceed to applicable
DTC flow. Go to Step 2.
2 1) Set scan tool to “READINESS TESTS” mode and check
if testing has been completed.
Is test completed?
No DTC is detected.
(Confirmation test is
completed) Repeat DTC
confirmation procedure.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Short term fuel trim check
Did short term fuel trim vary within –20% – +20% range in
Step 3) of “DTC Confirmation Procedure”?
Go to Step 3. Check fuel system.
Go to “DTC P0171 /
P0172: Fuel System
Too Lean / Rich”.
3 HO2S-2 output voltage check
1) Perform steps 1) through 9) of “DTC Confirmation
Procedure” for DTC P0136 (HO2S-2 malfunction) and
check output voltage of HO2S-2.
Is over 0.6 V and below 0.3 V indicated?
Replace three way
catalytic converter. Check “WHT” and
“ORN” wires for open
and short, and
connections for poor
connection.
If wires and connections
are OK, replace HO2S-
2.
ECM
+B
BLK/RED
BLU/BLK
BLK/ORN
BLK
C41-4
C41-1
C41-3
1
I2RH0B110060-01
1. EVAP canister purge valve
DTC detecting condition Possible cause
Canister purge control valve circuit is opened or shorted. • “BLU/BLK” circuit open or short
• “BLK/RED” circuit open or short
• Canister purge valve malfunction