562 8 DIAGNOSTIC TOOLS AND ACCESSORIES
The Accelerator Position Sensor (APS) / Idle
Validation Switch (IVS) harness is used to measure
V
REF
, APS signal, signal ground, IVS signal, and IVS
power at the APS/IVS sensor.
Pressure Sensor Breakout Harness
Figure 528 ZTSE4347
The Pressure Sensor Breakout Harness is used to
access V
REF
, signal ground, and signal voltage circuits
for the following sensors:
• Manifold Absolute Pre ssure (M AP)
• Exhaust Back Pressure (EBP)
• Engine Oil Pressu re (EOP)
Relay Breakout Harness
Figure 529 ZTSE4596
The Relay Breakout Harness is used to measure
power from the IDM ma in power relay or ECM main
power relay to check the operation of the relay in the
circuit.
Relay Breakout Harness
Figure 530 ZTSE4674
The Relay Breakout Harness is used to measure
power from the IDM ma in power relay or ECM main
power relay to check the operation of the relay in the
circuit.
Temperature Sensor Breakout Harness
Figure 531 ZTSE4483
The Temperature Sensor Breakout Harness enables
the technician to quickly connect a voltmeter and read
voltage signals for the Inta ke A ir Temperature (IAT)
sensor.
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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