Fuel Pump Relay
WARNING: This page is about a different car, the 1996 BMW 328is and 1996 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.
Remove fuel pump relay. Apply battery voltage to relay terminals No. 30 and 86. See Fig 1 . Ground relay terminal No. 85. Voltage should now exist at relay terminal No. 87. Replace relay if it does not work as indicated.
NOTE:
If relay does not work on vehicle, check battery feed, DME master (main) relay, DME/Motronic control unit and ground circuits going to fuel pump relay. See WIRING DIAGRAMS
article. Only sockets No. 2, 4, 6 and 8 are used by relay.