# Calling subaru people... Fuel Pump voltage troubleshooting help. **URL:** \ **Category:** Shift518 Automotive\ **Created:** [January 21, 2010, 4:55pm UTC](https://forums.speedlife.net/t/calling-subaru-people-fuel-pump-voltage-troubleshooting-help/249872 "2010-01-21T16:55:30Z")\ **Posts on this page:** 1\ **Showing post:** 9
**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\ **Post date:** [January 24, 2010, 1:05pm UTC](https://forums.speedlife.net/t/calling-subaru-people-fuel-pump-voltage-troubleshooting-help/249872/9 "2010-01-24T13:05:34Z")
> [@Why you should not break into a house, even with...](https://forums.speedlife.net/t/why-you-should-not-break-into-a-house-even-with/28679/21): > > 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… 1. 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 🙂 --- _[View the full topic](https://forums.speedlife.net/t/calling-subaru-people-fuel-pump-voltage-troubleshooting-help/249872)._