Troubleshooting

Recommended Actions
Note: The procedures have been listed in order of
probability. Complete the procedures in order.
Table 16
Troubleshooting Test Steps
Values Results
1. Diagnostic Codes
A. Establish communication between the electronic service tool
and the Electronic Control Module (ECM).
B. Check for active diagnostic codes.
Codes Result: A diagnostic trouble code is active or logged.
Troubleshoot any diagnostic codes that could have caused
an unsuccessful regeneration before continuing with this
procedure.
Result: A diagnostic trouble code is not active or logged.
Proceed to Test Step 2.
2. Insulation on the Exhaust Duct (If Equipped)
A. Check the insulation on the exhaust duct between the engine
and the Clean Emissions Module (CEM). Make sure that insulation
is not missing or damaged.
Insulation Result: The insulation is missing or damaged.
Repair or replace the insulation on the exhaust duct.
Result: The insulation is OK.
Proceed to Test Step 3.
3. Exhaust Leaks
A. Thoroughly inspect the exhaust duct between the engine and
the CEM for leaks. Ensure that all connections are secure and no
leaks are present.
Exhaust leaks Result: There are exhaust leaks.
Make the necessary repairs, Verify that the repair has elim-
inated the fault.
Result: The exhaust duct is OK.
Proceed to Test Step 4.
4. Manual Regeneration
A. Use one of the following methods to perform a manual
regeneration:
· The “Force Regeneration” switch on the application (if equipped)
· The “Particulate Filter Forced Regeneration” on the electronic
service tool
B. Use the electronic service tool to clear all logged diagnostic
codes.
Complete
regeneration
Result: The regeneration completed successfully and
there are no active diagnostic codes.
Return the engine to service.
Result: The regeneration did not complete successfully.
Contact the Dealer Solution Network (DSN).
i06091309
Diesel Particulate Filter
Collects Excessive Soot
This procedure covers the following diagnostic code:
Note: This procedure is applicable to engines
equipped with a wall flow DPF only.
50 UENR0612-07
Symptom Troubleshooting
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