(Table 90, contd)
Troubleshooting Test Steps
Values Results
6. Check the Aftertreatment System for Oil
A. Remove excess oil from piping with a clean cloth.
B. Remove the Clean Emissions Module (CEM). Refer to Disas-
sembly and Assembly, “Clean Emissions Module - Remove and
Install”.
C. Support the CEM over a suitable container with the exhaust in-
let downwards. Leave the CEM to drain for 8 hours.
D. Check the quantity of drained oil in the container.
CEM Result The volume of drained oil is greater than 1.0 L
(1.05669 qt).
Repair: Install a replacement CEM. Refer to Disassembly
and Assembly, “Clean Emissions Module - Remove and
Install”.
Return the unit to service.
Result The volume of drained oil is less than 1.0 L
(1.05669 qt).
Proceed to Test Step 7.
7. Recover the Aftertreatment System
A. Clean any remaining oil from the piping and the CEM inlet with
a clean cloth.
B. Install the Clean Emissions Module (CEM). Refer to Disassem-
bly and Assembly, “Clean Emissions Module - Remove and
Install”.
C. Run the engine at high idle with no load for a minimum of 20
minutes.
Note: During the following step, there are two versions of the
“Aftertreatment Recovery Procedure” . One version is for engines
with a DPF. The other version is for engines without a DPF. The
correct procedure is automatically selected.
Note: Engine RPM Override may be necessary to complete the
Aftertreatment Recovery Procedure.
D. Use the electronic service tool to perform the “Aftertreatment
Recovery Procedure” . While the procedure is progressing, check
for smoke from the exhaust. Some smoke will be evident during
the procedure. The smoke must dissipate before the procedure is
completed.
CEM Result: The “Aftertreatment Recovery Procedure” com-
pletes with a soot load of less than 80% and no smoke from
the exhaust.
Return the unit to service.
Result The “Aftertreatment Recovery Procedure” com-
pletes with a soot load of more than 80% or smoke from the
exhaust.
Contact the Dealer Solutions Network (DSN).
i06061494
Exhaust Temperature Is High
The Electronic Control Module (ECM) monitors the
temperature sensor in the outlet from the low-
pressure turbocharger.
Certain operating conditions may cause the exhaust
temperature to increase to a level that may damage
engine components. If a high exhaust temperature
occurs, the ECM derates the engine in order to
reduce the exhaust temperature. The engine is
derated only to a level that allows the exhaust
temperature to return to an acceptable level.
Probable Causes
• Inlet system leak
• Engine operating conditions
• Failed exhaust back pressure valve
• High altitude
• Obstructed Air-to-Air Aftercooler (ATAAC)
UENR4469-36 183
Symptom Troubleshooting
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