EGR Electronic Vacuum Regulator Solenoid: Description and Operation

EGR Vacuum Regulator (EVR) Solenoid:

PURPOSE
The EGR Vacuum Regulator (EVR) solenoid is an electromagnetic device which controls vacuum output to the EGR valve.

OPERATION
The Powertrain Control Module (PCM) outputs a duty cycle to the EVR which regulates the vacuum level to the EGR valve. As the duty cycle is increased, so is the vacuum signal to the EGR valve. The vacuum source is manifold vacuum.