Glow Plug/Inlet Air Heater Output State Test - Navistar International DT 466 Diagnostic/Troubleshooting Manual

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1. Select D_OutputStateTest.ssn from the open
session file window.
Figure 69 Output State High 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 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.
4. From the KOEO Diagnostics menu, select Output
State Test High and Run to start the test.
5. Toggle between the Output State Test Low and
the Output State Test High. Listen and observe
actuator control or circuit operation.
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 70 Close session
6. When finished with this test, select Session from
menu bar, then Close.

Glow Plug/Inlet Air Heater Output State Test

NOTE: This test can only be done with the EST;
MasterDiagnostics® software is required.
The Glow Plug/Inlet Air Heater Output State test
allows the technician to determine if the Inlet Air
Heater System is operating correctly.
The inlet air heater relay operation is activated for
30 seconds. A DMM and current clamp are used to
measure the time the relay is on and the amperage
that is drawn for the inlet air heater.
Figure 71 Output State Test Session
1. Select D_OutputStateTest.ssn from the open
session file window.