mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 4536 > < Diagram Information and Instructions|Page 4534
Page 1
background image

Fuel Pump Relay: Description and Operation

The fuel pump relay controls operation of the fuel pumps.
The relay is energized only during engine cranking or while the engine is running by the CIS-E control unit. If the engine stops with the ignition turned
(ON), the CIS-E control unit will interrupt the ground circuit for the fuel pump relay. 

Diagram Information and Instructions|Page 4536 > < Diagram Information and Instructions|Page 4534