Town & Country Van AWD V6-230 3.8L VIN L SMFI (1998)
EGR Control Solenoid: Description and Operation
EGR Mounting
Electric EGR Transducer (EET)
NOTE: The Electronic EGR Transducer (EET) assembly is a vacuum control solenoid and a backpressure transducer, in one package.
PURPOSE
The PCM controls when the EGR valve can be actuated, through the solenoid valve portion of the EET.
OPERATION
Ported vacuum from the throttle body, is supplied to the solenoid valve.
The PCM controls the flow of vacuum between the throttle body and the back pressure transducer, (through the solenoid ground circuit).
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When the solenoid is energized (grounded), no vacuum is supplied to the transducer.
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When the solenoid is de-energized (not grounded), vacuum is supplied to the transducer.
The solenoid will always be energized (no EGR), under following conditions:
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Engine warm-up, (engine coolant temperature below 40 ~F)
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Engine at idle
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Wide Open Throttle (WOT) operation
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Rapid acceleration/deceleration
