Calling subaru people... Fuel Pump voltage troubleshooting help.

[Boxersix]

@KrazyKid

Well I put 12v to the correct fuel pump terminals and the pump works. So I said the hell with finding the relay and ran a 30 toggle switch and a fuseable link inline from a constant 12v source. flip the switch, pump is on.

BUT, it still wont start. I pulled a plug and I have no spark.

So my question is, would the other 2 connections on the fuel pump relay have anything to do with cutting spark?

Or, am i looking for something else wrong, crash sensor or who knows what. No CEL’s lit, and I dont have a subaru scanner to see what codes if any I have.

Adam do you have any other ideas?

The FP relay is single function only. Two wires for the relay field, two for voltage feed in/out to the pump. It’s the only thing the relay controls.

Couple questions for you:

1)Have you checked to see if the PCM is getting power/turning on? Do you have a CEL in the dash with key-on position? You say “no CEL’s lit” but the CEL should be on with key-on until you start the car…possibility that your PCM circuit has no power…

2. is your car AWD or FWD?

3)does your car have a factory alarm on it?

Let me know those answers and I can whittle down the wiring for you for better diagnostics