7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 319
The ECM monitors the BCP signal to determine the
oil pressure in the brake gallery of the high-pressure
oil rail. D uring engine brake ope rat ion , if the ECM
recognizes that the BCP signal is greater than desired
brake control pressure or less than the ICP signal, the
ECM will set a DTC and illuminate the am b er E NGINE
lamp.
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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