234 6 PERFORMANCE DIAGNOSTICS
9. KOER Standard Test
Figure 304
Purpose
To verify that the engine sensors and IPR are
operating correctly within specified operating ranges
The ECM will actuate the IPR and monitor ICP sensor
feedback signals. If an ICP system problem exists,
the ECM will transmit DTCs to the EST.
Tools
• EST with MasterDiagnostics® software
• EZ-Tech® interface cable
Procedure
WARNING: To avoid serious personal injury,
possible death or damage to the engine or
vehicle, read all safety instructions in the “Safety
Information” section of this manual.
NOTE: The KOER Standard test can only be
done with the EST; MasterDiag nostics® software
is required.
Figure 305 KOER Standard.ssn
1. Open D_KOER_Standard.ssn to monitor engine
operation.
WARNING: To avoid serious personal injur
y,
possible death or damage to the engine or
vehicle
– comply with the following:
When running the engine in the servi
ce bay, make
suretheparkingbrakeisset,thetr
ansmission is
in neutra l, and the wheels are bloc
ked.
2. Start and run engine t o reach minim
um operating
temperature 70 °C (158 °F) or hi
gher.
NOTE: Engine coolant temperatu
re must reach
70 °C (158 °F) minimum for the EC
M to accurately
test engine actuators and sen
sors. If engine
coolant temperature is below
self test range, the
EST will display – Coolant te
mperature is out of
range.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any proced ures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.
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