E 350 4MATIC Sedan (211.087) V6-3.5L (272.972) (2006)
Fuel Pump Relay: Description and Operation
GF47.20-P-2010V Fuel Pump Relay, Component Description
Location
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Model 171: at the front of the luggage compartment
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Model 203, 209, 211, 219: at the left in the luggage compartment
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Model 164: at the right in the load compartment.
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Model 251: at the right in the spare wheel well
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Model 221: under the through-loading feature/ski bag
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Model 230: at the passenger-side fuse and relay module.
Task
The fuel pump relay actuates the fuel pump with voltage via a fuse.
Function
When actuated by the motor electronics control unit, with a ground signal at circuit 86, the relay closes its power contact. When the power contact is
closed the fuel pump is connected to circuit 30 (B+) via circuit 87.
To actuate the fuel pump relay and bridge terminal 30 and 87.