312 ENGINE ELECTRICAL
Injector Wiring Harness
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 the
m. If
resistance is felt, find the source of resistan
ce and
free up any connectors or clips that are caught
before
proceeding. If necessary, remove the valve c
over to
gain clearance for injector harness.
Figure 468 D isconnecting the No. 6 fuel injector
connector
1. Disconnect six, four wire injector connectors from
valve cover gasket.
• If only removing the injector harness, separate it
from the sensor harness and remove from various
tie down locations.
• If removing both the sensor and injector
harnesses together, it is assumed the sensor
harness removal procedure was followed by
removing both harnesses at the various tie down
locations.
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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