Negative Backpressure EGR Control Solenoid

EGR System:

EGR Control Solenoid:

PURPOSE
The ECM controlled solenoid is used in the vacuum line to regulate EGR flow.

OPERATION
The normally closed solenoid vacuum valve is opened when the ECM completes the ground. The ECM will energize the EGR solenoid (EGR ON) when the engine is warm and above idle.