DTC P0443: Evaporative Emission System Purge Control Valve Circuit - Suzuki Jimny Workshop Manual
1A
DTC P0443: Evaporative Emission System Purge Control Valve Circuit
Wiring Diagram
| 1. | EVAP canister purge valve | 3. | “IG” fuse | 5. | Ignition switch | 7. | “FI” fuse |
| 2. | Main relay | 4. | Relay box | 6. | ECM | 8. | “IGN1” fuse |
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
Monitor signal of EVAP canister purge valve is different from command signal. (Circuit open or short)
(2 driving cycle detection logic) |
•
EVAP canister purge valve
• EVAP canister purge valve circuit • ECM |
DTC Confirmation Procedure
WARNING:
•
When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1)
With ignition switch OFF, connect scan tool to DLC.
2)
Turn ON ignition switch and clear DTC using scan tool.
3)
Start engine and warm up normal operating temperature.
4)
Drive vehicle at more than 40 km/h, 25 mph for 5 min. or more.
5)
Check DTC and pending DTC.
DTC Troubleshooting
WARNING:
In order to reduce risk of fire and personal injury, this work must be performed in a well ventilated area and away from any open flames such as gas hot water.
| Step | Action | YES | NO |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
EVAP canister purge power supply circuit check
1)
Turn OFF ignition switch, disconnect connector from EVAP canister purge valve.
2)
Measure voltage between engine ground and “BLU/BLK” wire terminal of EVAP canister purge valve connector with ignition switch turned ON.
Is it voltage 10 – 14 V?
|
Go to Step 3.
|
“BLU/BLK” wire open circuit.
|
| 3 |
Wire circuit check
1)
Disconnect connectors from ECM with ignition switch turned OFF.
2)
Measure resistance between “E117-13” terminal of ECM connector and vehicle body ground.
Is resistance infinity?
|
Go to Step 4.
|
“BLU/RED” wire shorted to ground circuit.
|
| 4 |
Wire circuit check
1)
Measure voltage between “E117-13” terminal of ECM connector and vehicle body ground with ignition switch turned ON.
Is voltage 0 V?
|
Go to Step 5.
|
“BLU/RED” wire shorted to other circuits.
|
| 5 |
Wire circuit check
1)
Connect connector to purge control valve with ignition switch turned OFF.
2)
Turn ON ignition switch, measure voltage between “E117-13” terminal of ECM connector and vehicle body ground.
Is it voltage 10 – 14 V?
|
Go to Step 6.
|
“BLU/RED” wire open circuit.
|
| 6 |
EVAP canister purge control valve check
1)
Check EVAP canister purge control valve referring to
EVAP Canister Purge Valve Inspection:M13A
.
Is it in good condition?
|
Go to Step 7.
|
Faulty EVAP canister purge control valve.
|
| 7 |
EVAP canister purge control circuit check
1)
With ignition switch turn OFF, measure resistance between “E118-5/6” terminal and “E117-13” terminal of ECM connector.
Is resistance below 40 Ω at 20 °C, 68 °F?
|
Faulty ECM, substitute a known-good ECM and recheck.
|
“BLU/BLK” and/or “BLU/RED” wire in high resistance circuit.
|
NOTE:
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.