7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 359
EBP Sensor (Exhaust Back Pressure)
Figure 412 Function diagram for th
e EBP sensor
The function diagram for the EBP
sensor includes the
following:
• EBP sensor
• Electronic Control Module (E
CM)
• Variable Geometry Turbochar
ger (VGT)
• Exhaust G as Recirculation (EG
R)
Function
The EBP sensor is a variable capac
itance sensor
installed in a bracket mounted o
n the water supply
housing (Freon® compressor
bracket). The ECM
suppliesa5Vreferencesig
nal that the EBP sensor
uses to pro duce a linea r ana
log v oltage that indicates
pressure. The EBP sensor m
easures exhaust back
pressure so that the ECM c
an control t he VGT and
EGR systems.
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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