EGR Control Solenoid

Air Regulator
Energized when key is on [1]

AIV Solenoid
Energized engine temperature between 15° C (59° F) & 50° C (122° F) [2]
Energized engine temperature above 50° C (122° F) [3]

EGR Solenoid
Energized engine temperature below 60° C (140° F)
Energized engine temperature above 105° C (221° F)


[1] Only for 5 seconds if engine is not started.
[2] Engine rpm below 2500.
[3] Idle switch closed and rpm below 1500 only.