DTC P0443 [G6]

id010295807600

DTC P0443

Purge solenoid valve circuit malfunction
DETECTION CONDITION
•  Open or short circuit is observed in the purge solenoid valve system when the ignition switch is turned on.
POSSIBLE CAUSE
•  Purge solenoid valve malfunction
•  Poor connection of connectors at purge solenoid valve and/or PCM
•  Short to power supply circuit in wiring from purge solenoid valve B to PCM terminal 2X
•  Short to ground in wiring from purge solenoid valve terminal B to PCM terminal 2X
•  Open circuit in wiring from PCM terminal 2B and/or 2C to engine ground
•  Open circuit in wiring from purge solenoid valve terminal B to PCM terminal 2X
•  Open circuit in wiring from purge solenoid valve terminal A to main relay terminal D

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Check for related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
•  If vehicle is not repaired, go to the next step.
No
Go to the next step.
2
•  Verify stored DTC.
•  Have DTCs P0100, P0340, P0505 and/or P1250 been stored?
Yes
Inspect for open circuit in following wiring harnesses, then go to Step 9.
•  Main relay terminal D—PRC solenoid valve, IAC valve, MAF sensor, CMP sensor
•  Between PCM terminal 2C and engine ground
No
Go to the next step.
3
•  Does purge solenoid valve connector or PCM connector have poor connection?
Yes
Repair or replace connector, then go to Step 9.
No
Go to the next step.
4
•  Disconnect purge solenoid valve connector.
•  Turn ignition switch to the ON position.
•  Is there battery positive voltage at purge solenoid valve harness side connector terminal A?
Yes
Go to the next step.
No
Inspect for open or short circuit in wiring harness (between main relay terminal D and purge solenoid valve terminal A), then go to Step 9.
5
•  Disconnect PCM connector.
•  Purge solenoid valve is disconnected.
•  Is there continuity between purge solenoid valve harness side connector terminal B and PCM harness side connector terminal 2X?
Yes
Go to the next step.
No
Repair open circuit, then go to Step 9.
6
•  Is there continuity from PCM harness side connector terminal 2X to 1B?
Yes
Repair short to power supply circuit, then go to Step 9.
No
Go to the next step.
7
•  Is there continuity from PCM harness side connector terminal 2X to body ground?
Yes
Repair short to ground circuit, then go to Step 9.
No
Go to the next step.
8
•  Is purge solenoid valve normal?
Yes
Go to the next step.
No
Replace the purge solenoid valve, then go to the next step.
9
VERIFY TROUBLESHOOTING OF DTC P0443 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear DTC from memory using the M-MDS.
•  Start engine.
•  Retrieve the DTCs using the M-MDS.
•  Is same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform “AFTER REPAIR PROCEDURE”.
•  Is there any DTC present?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [G6].)
No
Troubleshooting completed.