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97 m3 cranks but no start ? no fuel

General BMW Mechanical Help sponsored by RM European Auto Parts - Bimmerforums - The Ultimate BMW Forum - forums.bimmerforums.com
Working on a 97 m3 for a friend. Fuel pump doesn?t power up. Will power up when jumping the relay. I have a ground signal from DME. 12v at pin 30. But power coming out of DME relay into fuel pump relay is only around 4-5 volts. I think I took this reading key on engine off. I do remember trying it cranking as well and I still didn?t have proper voltage at fuel pump relay. Swapped relay but same result. 12v into DME relay. Any advice in what direction to look into? I pulled a coil and checked for spark and spark is present.


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