DTC P0443:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0102h4704500

DTC P0443:00

Purge solenoid valve circuit problem
DETECTION CONDITION
•  The purge control voltage at the PCM terminal 1AI exceeds the specification or the purge control voltage is less than the specification relative to the PCM control condition.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
•  PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
Not applicable
POSSIBLE CAUSE
•  Purge solenoid valve connector or terminals malfunction
•  Short to ground or open circuit in purge solenoid valve power supply circuit
―  Short to ground in wiring harness between ENGINE2 15 A fuse and purge solenoid valve terminal B
―  ENGINE2 15 A fuse malfunction
―  Open circuit in wiring harness between main relay terminal C and purge solenoid valve terminal B
•  PCM connector or terminals malfunction
•  Short to ground in wiring harness between purge solenoid valve terminal A and PCM terminal 1AI
•  Short to power supply in wiring harness between purge solenoid valve terminal A and PCM terminal 1AI
•  Open circuit in wiring harness between purge solenoid valve terminal A and PCM terminal 1AI
•  Purge solenoid valve malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT PURGE SOLENOID VALVE CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the purge solenoid valve connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
4
INSPECT PURGE SOLENOID VALVE POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
•  Verify that the purge solenoid valve connector is disconnected.
•  Switch the ignition ON (engine off).
•  Measure the voltage at the purge solenoid valve terminal B (wiring harness-side).
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ENGINE2 15 A fuse.
•  If the fuse is blown:
―  Repair or replace the wiring harness for a possible short to ground.
―  Replace the fuse.
•  If the fuse is deteriorated:
―  Replace the fuse.
•  If the fuse is normal:
―  Repair or replace the wiring harness for a possible open circuit.
Go to Step 10.
5
INSPECT PCM CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
6
INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND
•  Verify that the purge solenoid valve and PCM connectors are disconnected.
•  Inspect for continuity between purge solenoid valve terminal A (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 10.
No
Go to the next step.
7
INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the purge solenoid valve and PCM connectors are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the purge solenoid valve terminal A (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible short to power supply, then go to Step 10.
8
INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT
•  Verify that the purge solenoid valve and PCM connectors are disconnected.
•  Switch the ignition off.
•  Inspect for continuity between purge solenoid valve terminal A (wiring harness-side) and PCM terminal 1AI (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 10.
9
INSPECT PURGE SOLENOID VALVE
•  Inspect the purge solenoid valve.
•  Is there any malfunction?
Yes
Replace the purge solenoid valve, then go to the next step.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
Go to the next step.
10
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Perform the KOER self test.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
DTC troubleshooting completed.