Air Management Test - Navistar International DT 466 Diagnostic/Troubleshooting Manual

Figure 77 Continuous Monitor session
1. With the engine
D_ContinuousMonitor.ssn
session file window.
Figure 78 Continuous Monitor test
2. Select Diagnostics from the menu bar.
3. Select Key-On Engine-Running Tests from the
drop down menu.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
3 DIAGNOSTIC SOFTWARE OPERATION
running, select
from the open
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
4. From the KOER Diagnostics menu, select
Continuous Monitor and select Run to start
the test.
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or
vehicle, be careful to avoid rotating parts (belts
and fan) and hot engine surfaces.
5. Wiggle connectors and wires at all suspected
problem locations.
interrupted, the EST will display DTCs related to
the condition.
6. Correct problem causing active DTCs.
7. Clear DTCs.
Figure 79 Close session
8. When finished with this test, select Session from
menu bar, then Close.

Air Management Test

NOTE: Before doing
Diagnostics tests 1 through 12 should be completed.
Problems with other systems (injectors, fuel supply,
etc.) can affect Air Management test results.
NOTE: The Air Management test can only be
done with the EST; MasterDiagnostics® software
is required. The Standard test must be done before
doing the Air Management test.
The Air Management test checks the operation of the
Air Management System and the following:
• EVRT® electronically controlled turbocharger -
International's version of a Variable Geometry
Turbocharger (VGT)
• Exhaust Gas Recirculation (EGR) valve
During the Air Management test, the ECM commands
the VGT control actuator and EGR actuator through
a step test sequence to determine if actuators and
the Air Management System are performing as
79
If circuit continuity is
this test, Performance