7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 347
Brake S witch Circuit
Figure 403 Function diagram for the Brake Switch
Brake Switch Operation
The service brake circuit signals the ECM when
the brakes are applied. The information is used to
disengage the Cruise control and Power Takeoff
(PTO) function. The brake signal will interrupt the
Cold Ambient Protection (CAP) featu re and will reset
the time interval for the Idle Shutdown Timer (IST)
feature.
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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