EGR Control Solenoid: Description and Operation

EGR Control Circuit:

PURPOSE
Allows the ECM to control the vacuum applied to the EGR valve.

LOCATION
On the intake collector.

OPERATION
The solenoid is an electromechanical solenoid. Voltage is applied to the windings of the solenoid coil, a magnetic field is induced. The magnetic field moves a valve which in turn opens the valve, allowing vacuum to act on the EGR valve.

Under any one of the following conditions. ECM closes the vacuum passage of SV valve. In this state, as the vacuum is not transmitted to the EGR valve, it remains closed.
- When engine coolant temperature is low
- When throttle valve opening is less than specification.
- When engine is running under high load
- When vehicle is stopped.