478 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Do KOER Continuous Monitor Test. When engine is running, enable test, wiggle wires on ICP sensor,
IPR v alve, and all pass through connectors. If DTC is set, or
engine dies, check codes and inspect wires at connection point.
Do ICP pressure test. Test will verify if oil is aerated at high idle. See “Performance
Diagnostics” – Section 6 (page 205).
Test ICP system for leaks. See “Hard Start and No Start Diagnostics” – Section 5 (page 143).
Do IPR Pin-Point Diagnostics.
See “IPR” (page 494).
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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