Speeduino

Hello,
setup Fuel Pump thru Relay, board default (should be Pin24).
Power on, Fuel Pump not running. Test Output Hardware, Injectors are working, but no fuel.
Am I correct in understanding that Fuel Pump should be working immediately after Power Up, or how can I test the Fuel Pump. Is there some kind of Output Test function for Fuel Pump?
Trigger not hooked up yet.

Jochem

Hi Jochem,

This should help if you don't already have it: https://github.com/turboedge/SpeedyBoar ... ctions.pdf

It should prime with power on. Is the board type set to UA4C? The fuel pump is pin 23 on the arduino. There is an LED on the board that should light to let you know its working. If it is not and you want to check the circuit you can jump 5v to pin 23 on the arduino. That will trigger the output manually.

Weaver

Weaver,
accoording to the document, FLPUMP is on 24....Tacho is 23...
or am I missing something here?

...it is working now...

JochemsTR wrote: ↑Thu Jul 02, 2020 4:33 pm ...it is working now...

What ended up being the issue ?

Rather embarassing....
I somehow made the assumption that FuelPump is a voltage output....corrected the wiring on the relay....

JochemsTR wrote: ↑Fri Jul 03, 2020 5:06 am Rather embarassing....
I somehow made the assumption that FuelPump is a voltage output....corrected the wiring on the relay....

As long as you learned from this experience, its all good

JochemsTR wrote: ↑Fri Jul 03, 2020 5:06 am Rather embarassing....
I somehow made the assumption that FuelPump is a voltage output....corrected the wiring on the relay....

For anyone else reading this...

ALL Speeduino outputs switch to GND other than the Ignition.

JochemsTR wrote: ↑Fri Jul 03, 2020 5:06 am Rather embarassing....
I somehow made the assumption that FuelPump is a voltage output....corrected the wiring on the relay....

Thanks for the post. Just saved my a day. I did the same thing.

For future reference...

All Speeduino outputs are ground/negative switched.

The wiki indicates this in some of the wiring diagrams.