Fuel relay fault.

[MartinT]

Hello, I have problems with the aux outlet when I want to control the fuel pump. I use earth as a signal to the fuel relay. But when I turn off the switch to the Ecu. Then the fuel pump starts again. The signal switches to ground when the Ecu turns of. 

Any settings to change that?

 

[Vaughan]

Either change the hotside feed to the relay trigger to an ignition switch supply or use a spare Ignition or Injection pin instead of a normal Aux pin to trigger the relay. Aux pins backfeed when fed power while the ECU is off.

[MartinT]

Thank you, i will try that