marlono1

thank you but unfortunately I don't know why it wont work that way. I have to connect a ground in between 85 and aux 4 for it to prime the fuel pump. nonetheless i wont touch as it works this way with a an aftermarket relay

it works now thank you Admin.

But its not, Car does not start. I have a fuel pressure gauge and it generates no pressure this way. If I use the OEM Relay i must route a ground and aux 4 together in series with a ground for it to work. OEM way has it routed this way with OEM ECU in order to work. If i route the Atom ECU the same way as the diagram above it also enables the Fuel Pressure with the OEM relay.

Aux test is set to ON 85 aux 4 shows 0v 86 ign switch 12v while cranking it still shows 0v on aux 4 side Settings for Fuel Pump

i am using atomX aux 4 to 85 ign switch 86 12v (20A Fuse) 30 fuel pump 87 When I use OEM relay AUX 4 to Y connection one to ground and the other to relay(OEM) works with no problem

so it works when i have 85 sent to ground. this way its running only of ign switch and not via ECU switch

Hi admin I was not successful in powering up the Fuel Pump. I made wiring exactly as describe. I know each line is correct because its the same Ign Switch power i am using for my main relay. If I bypass the fuel pump relay with straight power it comes on.

thank you

Hi Admin, I want to stop using the OEM relay used for the fuel pump as its giving me problem. Can I get an idea how it should be hooked up to create an aftermarket relay. OEM way i have a ground connected to ECU output before connecting to COR(Fuel Pump Relay) https://www.rollaclub.com/wiki/index.php?title=Circuit_Opening_Relay_Wiring 475773540_PCDatalog-2021-10-1085457pm.llgx

got it thanks!

so 85 would go to my ECU and 86 would be from ignition switch? 30 battery and 87 to fan

Hi I have a g4 atom and I am setting up aux 4 for electric fan but even though it worked before by 12v trigger. I am not having succes Can I use a low level trigger relay to enable the 12v fan? I was thinking of using this: YWBL-WH Relay Module One Way 30A Optocoupler Isolation Relay Module High Power Relay High/Low Level Trigger YYG-2(5VDC) https://www.amazon.com/dp/B07TWH7DZ1/ref=cm_sw_r_apan_glt_i_8VN587K55A5D3EVN3FA9?_encoding=UTF8&psc=1 Not sure what to Power on the board to test without an arduino since signal is coming from the ECU

its always the simple things, turns out i didnt assign each sensor to the correct configuration. Thanks admin for the assistance

No map sensor installed as mentioned initially. tuner mentioned it shouldn't be problem I tried the TPS and i see the voltage change when I move the throttle cable from the live data. I will test the ECT and test the IAT and see if the readings are coming in the live data.

here it is PC Datalog - 2021-10-10 8;54;57 pm.llgx