EET Solenoid Operation

EGR System Vacuum Connections:

Electric EGR Transducer (EET):

Note: The 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 portion of the EET.

OPERATION

^ When the PCM energizes (grounds), the solenoid, vacuum does not reach the transducer.

^ Vacuum reaches the backpressure transducer when the solenoid is de-energized

^ The solenoid will always be energized (no EGR), under following conditions:

- Engine warm-up, (engine coolant temperature below 40 °F)
- Engine at idle
- Wide Open Throttle (WOT) operation
- Rapid acceleration/deceleration
- During EGR system diagnostic check

Note: If the wiring or connector is disconnected from the solenoid, the EGR valve will operate at all times, (adversely affecting engine idle and performance).