DTC P2425:00 [MZ-CD 1.6]

id0102g8353500

DTC P2425:00

EGR cooler bypass valve solenoid valve control circuit open
DETECTION CONDITION
•  The PCM monitors the load on the EGR cooler bypass valve solenoid valve control circuit. If the load does not change when the PCM duty-controls the EGR cooler bypass valve solenoid valve, the PCM determines that there is an open circuit in the EGR cooler bypass valve solenoid valve control circuit.
POSSIBLE CAUSE
•  EGR cooler bypass valve solenoid valve connector or terminal malfunction
•  Open circuit in the wiring harness between main relay and EGR cooler bypass valve solenoid valve terminal B
•  Short to ground in wiring harness between ENG INJ and EGR cooler bypass valve solenoid valve terminal B
•  PCM connector or terminal malfunction
•  Open circuit in the wiring harness between EGR cooler bypass valve solenoid valve terminal A and PCM terminal 2Z
•  EGR cooler bypass valve solenoid valve malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT EGR COOLER BYPASS VALVE SOLENOID VALVE CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the EGR cooler bypass valve 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 8.
No
Go to the next step.
4
VERIFY WHETHER MALFUNCTION IS EGR COOLER BYPASS VALVE SOLENOID VALVE POWER SUPPLY CIRCUIT OR ELSEWHERE
•  EGR cooler bypass valve solenoid valve connector is connected.
•  Switch the ignition to ON (engine off).
•  Measure the voltage between EGR cooler bypass valve solenoid valve harness side connector terminal B and body ground.
•  Is the voltage B+?
Yes
Go to Step 6.
No
Go to the next step.
5
CLASSIFY OPEN CIRCUIT OR SHORT TO GROUND CIRCUIT
•  Verify the ENG INJ condition.
•  Is the ENG INJ normal?
Yes
Repair or replace for a possible open circuit between main relay and EGR cooler bypass valve solenoid valve terminal B, then go to Step 8.
No
If the fuse is blown;
•  Repair for a possible short to ground between ENG INJ and EGR cooler bypass valve solenoid valve terminal B.
If the fuse is deterioration;
•  Replace the fuse.
Then go to Step 8.
6
INSPECT PCM CONNECTOR CONDITION
•  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 8.
No
Go to the next step.
7
INSPECT EGR COOLER BYPASS VALVE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT
•  EGR cooler bypass valve solenoid valve and PCM connectors are disconnected.
•  Inspect for continuity between EGR cooler bypass valve solenoid valve terminal A (wiring harness-side) and PCM terminal 2Z (wiring harness-side).
•  Is there continuity?
Yes
Replace the EGR cooler bypass valve solenoid valve, then go to the next step.
(EGR cooler bypass valve solenoid valve internal circuit open)
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8
VERIFY THAT DTC P2425:00 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same 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.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
DTC troubleshooting completed.