ENGINE ELECTRICAL 321
Figure 488 Connecting brake shutoff valve
6. Connect the brake shutoff valve connector to the
valve cover gasket connection.
NOTE: When removing, disconnecting, or installing
the brake shutoff valve, ICP and BCP sensors, the
valve cover must be removed.
ECM, IDM, EGR Drive Module, and Intake Air
Heater
WARNING: To prevent serious personal
injury, possible death, or damage to the engine or
vehicle, disconnect the main negative battery
terminal before removing or i nstalling any
electrical components.
CAUTION: To prevent engine damage, make sure
the key is in the OFF position before unplugging the
connector or relay for the ECM, IDM, and EGR drive
module. Failure to turn the key to the OFF position
will cause a voltage spike and damage the electrical
components.
CAUTION: To prevent engine damage, do not tug on
any wiring harnesses while trying to remove them. If
resistance is felt, find the source of resistance and
free up any connectors or clips that are caught before
proceeding.
NOTE: The ECM, IDM, and EGR drive modules can
be assembled as a single unit on a workbench or
they can be installed individually on the crankcase. It
will be assembled here on a workbench for illustrative
purposes.
EGES-265-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
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