Prizm L4-1600cc 1.6L DOHC VIN 6 (1990)
EGR Electronic Vacuum Regulator Solenoid: Description and Operation
EGR Vacuum Solenoid Valve
Under any one of the following conditions, ECM closes the vacuum passage of the VSV. In these states, as the vacuum is not transmitted to the EGR
valve, it remains closed:
-
When engine coolant temperature is low.
-
When throttle valve is at idle position.
-
When engine is running under high load.
-
When intake manifold pressure is low.
Other than the above, EGR valve opens and closes in accordance with the EGR modulator operation.
