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78
Figure 75
Standard test
2. Select Diagnostics from the menu bar.
3. Select Key-On Engine-Running Tests from the
drop down menu.
4. From the KOER Diagnostics menu, select
Standard and select Run to start the test.
The ECM increases engine idle to a predetermined
value and commands the IPR valve to set ICP to rated
speed pressure. If the performance of the ICP system
is acceptable, the ECM will control the IPR valve
and reduce the pressure in steps, while continuing to
monitor the ICP system.
When the test is done, the ECM restores normal
engine operation, and the Diagnostic Trouble Code
window will display DTCs, if there are problems.
5. Correct problem causing active DTCs.
6. Clear DTCs.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
3 DIAGNOSTIC SOFTWARE OPERATION
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Figure 76 Close session
7. When finished with this test, select Session from
menu bar, then Close.
NOTE: When using the EST to do KOEO or KOER
diagnostic tests, Standard test is always selected
and run first. If the ignition switch is not cycled, the
Standard test does not have to be run again.
Continuous Monitor Test
NOTE: This test can only be done with the EST;
MasterDiagnostics® software is required.
The
Continuous
Monitor
intermittent connections at sensors and actuators.
The engine can be off or running.
The EST monitors the following circuits:
•
Accelerator Position Sensor (APS)
•
Barometric Absolute Pressure (BAP)
•
Battery Voltage (V
Batt
•
Brake Control Pressure (BCP) (optional)
•
EGR Valve Position (EGRP)
•
Exhaust Back Pressure (EBP)
•
Engine Coolant Level (ECL)
•
Engine Fuel Pressure (EFP) (optional)
•
Engine Oil Pressure (EOP)
•
Engine Oil Temperature (EOT)
•
Intake Air Temperature (IAT)
•
Injection Control Pressure (ICP)
•
Manifold Air Temperature (MAT)
•
Manifold Absolute Pressure (MAP)
test
troubleshoots
)
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