EGR Backpressure Transducer: Description and Operation

GF07.17-P-3157-03H Exhaust Gas Recirculation Vacuum Transducer, Function
- with CODE (491) USA version






The EGR [ARF] vacuum transducer (Y31/1) is actuated by the engine control unit with a variable current.
- Signal from control unit:
Controlled vacuum to connection (3)
- No signal from control unit:
Connection (1) and (3) connected - EGR valve closed (ventilated)