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Old 03-07-2021, 09:35 AM
pshovest pshovest is offline
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If you have a fuel pump relay you don't have a fuel pump controller (EKP).
There should be a wiring schematic on the relay.
1) Remove relay. With ignition on, confirm you have 12v at relay pin 30 in socket.
2) Remove relay and insert a fused jumper wire between relay socket pins 30 and 87. Fuel pump should run.
3) With jumper in place and fuel pump running, try to start engine.
4) If fuel pump doesn't run with fused jumper in place, you have a wiring, power or fuel pump problem.
5) If engine doesn't start with FP running check pressure at rail. If pressure is OK, you have something other than a fuel issue.

This may not be a fuel problem. If DME doesn't sense cranking RPM, it won't energize the fuel pump relay and FP won't run.

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