|
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
|
VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition to ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Is the other PENDING CODE/DTC also present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
Go to the next step.
|
|
4
|
INSPECT DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR CONNECTOR CONDITION
• Switch the ignition to off.
• Disconnect the diesel particulate filter differential pressure sensor 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 9.
|
|
No
|
Go to the next step.
|
|
5
|
INSPECT DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Disconnect the diesel particulate filter differential pressure sensor connector.
• Switch the ignition to ON (engine off).
• Measure the voltage at the diesel particulate filter differential pressure sensor terminal C (wiring harness-side).
• Is the voltage B+?
|
Yes
|
Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
|
|
No
|
Go to the next step.
|
|
6
|
INSPECT DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR
• Inspect the diesel particulate filter differential pressure sensor.
• Is there any malfunction?
|
Yes
|
Replace the diesel particulate filter differential pressure sensor, then go to Step 9.
|
|
No
|
Go to the next step.
|
|
7
|
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 9.
|
|
No
|
Go to the next step.
|
|
8
|
INSPECT DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR CIRCUIT FOR OPEN
• Switch the ignition to ON (engine off).
• Inspect for continuity between diesel particulate filter differential pressure sensor terminal B (wiring harness-side) and PCM terminal 3O (wiring harness-side)
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the wiring harness for a possible open circuit, go to the next step.
|
|
9
|
VERIFY THAT DTC P2455:00 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.
|
|
10
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
