940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
EGR Electronic Vacuum Regulator Solenoid: Description and Operation
PURPOSE
The controller stabilizes the signal from the intake manifold and converts the control module signal into a modified vacuum signal for controlling
the EGR valve.
NOTE: Later-version controllers have the connector mounted on the unit itself (see image). An extension harness is available to modify
earlier-version wiring.
OPERATION
The EGR valve is supplied with a vacuum control signal from one compartment in the controller. Vacuum from the intake manifold is supplied to
another compartment.