Fuel Pump Relay

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1998 BMW Z3, 1998 BMW M3, 1998 BMW M Roadster, 1998 BMW 740iL, and 1998 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

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

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