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5.3 Troubleshooting with the EES Service Tool
During troubleshooting, individual EES components such as the fuel pump and doser can be activated individually
using the ECM Service Tool. The engine must be off and only one component can be energized at a time. Refer to
for complete procedures.
Air Control Valve (ACV) - Press button once to activate ACV. It will go through one cycle. You should be able to
hear the motor indicating that it is working.
Injector (Doser) - Press button once to activate and once more to shut off. You should hear a clicking noise
indicating that it is working.
Fuel Pump - Press button once to activate and once more to shut off. You should be able to hear the pump motor
indicating that it is working.
NOTE
Do not activate both the Doser and Fuel Pump at the same time. This will result in raw fuel being
sprayed into the exhaust system.
5.4 Operation with 250 Hour Service Mode Alarm Active
If the unit has been operating with an active “250 Hour Service Mode” alarm, it means that the 250 hour window of
continued operation has started and the timer is currently counting down. When the 250 hours is over, the
generator set will shut down.
During this period, automatic regeneration, initiated by either BP or the regeneration timer will not be initiated, and
BP will continue to rise. In cases where BP is below 120 in/H2O (30kPa), a manual regeneration through the EES
Diagnostic Tool will still be possible. If BP reaches 120 in/H2O (30kPa), manual regeneration is no longer possible;
the DPF will have to be removed and manually cleaned. Refer to the DPF Manual Cleaning procedure in
CAUTION
!
When back pressure is between 60 in/H2O and 120 in/H2O (15kPa and 30kPa), manual regener
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ation should only be initiated when the unit is running, and will continue to run in a Steady
State (either high speed or low speed) for the entire regeneration process.
This may cause the unit to shut down and restart several times until the back pressure has
reduced to 44 in/H2O (11kPa). The alarm “EES System Overtemp” may display and self-clear
after the unit is back to normal operation. It is recommend that as part of a repair after a pro
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longed “EES Service Required” event that the DPF be removed and manually cleaned.
