u/Cevraimax

No power to fuel pump
▲ 27 r/Miata

No power to fuel pump

Hi,

I have an issue since last month where I have no more power to the fuel pump.
I tried all the common issues with no luck.

No power to the fuel pump connector outside of tank

What have been checked already:

- Main relay is good (brand new + CEL/battery light on key on)
- 15A engine fuse under dash is good
- Fuel pump working when feed 12v directly
- No priming even with fp/gnd jumped on diag port
- Connectivity in the wires from the under dash fuel pump relay to the tank connector
- Tried bypassing the fuel pump relay under the dash

Am I forgetting something before feeding the pump directly on a switch 12V ?

Pic of the troublemaker for attention

u/Cevraimax — 6 days ago