8 DIAGNOSTIC TOOLS AND ACCESSORIES 561
The 4-Pin Injector Harness is used to measure
continuity of the UVC wiring and injector solen oids.
12-Pin Breakout Harness
Figure 524 ZTSE4665
The 1 2-Pin Breakout Ha rne ss is used fo
r circuit
diagnostics for the Injector Drive M
odule (IDM)
powers and ground, actuator power a
nd ground
(EGR and VGT), in add ition to some ap
plications
(IAT, service brake switch signal
s to the ECM, and
ATA data link to and from the IDM).
500 Ohm Resistor Harness
Figure 525 ZTSE4497
The 500 Ohm Resistor H arness is used for operational
diagnostics of sensor circuits and Output State Tests
for actuator control circuits.
Actuator Breakout Harness
Figure 526 ZTSE4484
The Actuator Breakout Harness is used to measure
thevoltagesuppliedtotheInjectionPressure
Regulator (IP R).
For electrical circuit diagnostics, install the breakout
harness between the electrical harness and the
valve. For Injection Control Pressure (ICP) system
diagnostics, plug the Actuator Breakout Harness into
the IPR valve only.
APS/IVS Sensor Breakout Harness
Figure 527 ZTSE4485
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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