So recently I hooked up rolling antilag to my service connector I only used it twice.. after that it didn’t work so I took it off because my old motor broke the pump so I took it off to refresh it. Then I just recently put the motor in.. so I wanted to check ignition timing but when I jump the connector the CEL won’t go on.. even when I turn the key to the on position… the CEL won’t show on the dash Ik the Custer and ecu is fine because i Tested it in a buddies car I checked all fuses.. idk what els it can be I’ve been trying to figure out this issue for the last 3 days and can’t get it to work

car is a 1997 ek coupe
engine management s300 v3

before anyone says that you can’t jump the connector with the s300 you can because I’ve done it to a lot of cars