MaxouGT4 Posted July 17, 2022 Report Share Posted July 17, 2022 Hi, I have a my fuel pump relay (30 amps) that received a 12v signal from my TST205+ on Aux Output 7 (original fuel pump signal but not on ground anymore). If I test the voltage when the car is at "On"/not running and without relay I read 11.75V. If I back prob the terminal of the relay when the relay is plug I get 0.5V. If i remove the terminal from the ecu and try a direct 12.6V it works. Is it a normal behavior? I guess I could just change my signal to be a ground again a give my 86 pin of a my relay a 12v with a 2amps fuse but I'm wondering if it's normal. I've check the ground for the ecu and relay and I don't have any resistance. And what is the difference between Aux Output and Ign Output anyway? Thank you! Quote Link to comment Share on other sites More sharing options...
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