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Fuel Pump Relay

NOTE: If relay does not work on vehicle, check battery feed, DME relay, PCM and ground circuits at fuel pump relay. See WIRING DIAGRAMS article.

Remove fuel pump relay. Apply battery voltage to relay terminal No. 30 and terminal No. 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.

Fig 1: Identifying Fuel Pump Relay Terminals & Socket
G91B16486Courtesy of BMW OF NORTH AMERICA, INC.