S 500 Sedan (140.051) V8-5.0L (119.980) (1996)
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Canister Vent Valve: Description and Operation
Canister Vent Valve
Task
Sealing off air admission of activated charcoal filter
Design/function
The electromagnetic shutoff valve is actuated at the GND end by the ME-SFI control module for the leak check of the fuel system.
If an actuation fault exists (valve does not open) a safety valve in the activated charcoal filter valve (Y58/4) performs the task of air admission of
the activated charcoal filter and of the fuel tank (from about -25 mbar).
