3 DIAGNOSTIC SOFTWARE OPERATION 77
Figure 72 Glow Plug/Inlet Air Heater Output
State test
2. Select Diagnostics from the menu bar.
3. Select Key-On Engine-Off Tests from the drop
down menu.
NOTE: When using the EST to do KOE O or KOER
diagnostic tests, Standard test is always selected
and run first. If th e ignition switch is not cycled, the
Standard test does not have to be run again.
4. From the KOEO Diagnostics menu, select Glow
Plug/Inlet Air Heater and Run to start the test.
NOTE: This test can o nly be run twice for each ignition
switch cycle. Earlie r ca libration may no t allo w the test
to be run, contact International® Technical Services.
Figure 73 Close session
5. When finished with this test, selec t Session from
menu bar, then Close.
Key-On Engine-Running Tests
Standard Test
NOTE: The KOER Standard test can only be
done with th e EST; MasterDiag nostics® software
is required.
During the KOER Standard test, the ECM commands
the IPR through a step test to determine if the ICP
system is performing as expected. The ECM monitors
signal values from the ICP sensor and compares
those values to the expected values. When the
Standard test is done, the ECM returns the engine to
normal operation and transmits DTCs set during the
test.
NOTE: Before doing t his test, confirm the following
conditions:
• Problems causing active DTCs were corrected,
and active DTCs were cleared.
• Engine coolant temperature must be at least 70
°C (158 °F).
• Battery voltage must be higher than 10.5 volts.
• No signal from Vehicle Speed Sensor (VSS)
• Transmission in park or neutral
Figure 74 KOER Standard session
1. With the engine running, select
D_KOER_Standard.ssn from the open
session file window.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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