Egr Drive Module; Inlet Air Heater Element - International VT 275 V6 Manual

ELECTRONIC CONTROL SYSTEM
I I N N L L E E T T A A I I R R H H E E A A T T E E R R
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E E G G R R D D R R I I V V E E M M O O D D U U L L E E
I I N N T T A A K K E E M M A A N N I I F F O O L L D D
International

EGR Drive Module

• The EGR Drive Module is mounted below
the de-aeration tank. The module receives
the desired EGR valve position from the
ECM over the engine CAN 2 link. The
module then sends a series of voltage and
ground signals to the Motor U, V, and W
terminals of the EGR valve. The voltage
signals are Pulse Width Modulated (PWM)
to control current flow to the motor field coils.
• The module receives battery voltage and
ground through the 12-way engine-to-
chassis connector. The module supplies a
reference voltage to three position sensors
within the EGR valve. The drive module
uses the sensor signals to determine the
percent of valve opening.

Inlet Air Heater Element

• The Inlet Air Heater element is located in
the lower side of the intake manifold and
projects through the manifold and into the
inlet air stream.
• The element warms the incoming air to aid
cold start and reduce emissions during
warm-up. The ECM turns the inlet air
heater on for a predetermined amount of
time, based on engine oil temperature,
intake air temperature, and barometric air
pressure. The inlet air heater can remain on
while the engine is running to reduce white
smoke during engine warm-up.
® VT 275 V6 Engine