1994 BMW 540i Repair Question
BMW 540i Fuse Problem
dme???? please explain
there should be 2 feeds to the relay. one is key on power and the other is 12 volts constant.
if there is no power to the fuse box fuse, then you may have a wiring issue at the fuse box or check fusible links
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The DME(bmw lingo) is the ECM. It was a bad CPS. During troubleshooting I inadvertantly had the fuel pump relay and engine control relay swapped, so it still wouldnt start. swapped them back and she fired right up. thanks
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