EGR Vacuum Transducer (Y31/1) Position/Task/Function

Position
Model 140






Model 168






Model 202






Model 210







Task
Controlling vacuum to the EGR valve

Function
The EGR vacuum transducer (Y31/1) is actuated by the engine control module with a variable current.
- Signal from control module:
Controlled vacuum to connection (3)
- No signal from control module:
Connections (1) and (3) linked - EGR valve closed (air admitted)