Muhammad Posted August 29, 2022 Report Share Posted August 29, 2022 Greetings, Ecu link g4x plug in for skyline r33 gtst rb25det s2 not turning on and no led light seen when switch ignition on. i have check my battery to ecu wire pin on power is 12v present on it. and tested eccs relay for ecu is good. currently ecu is already removed from car. i need to confirm my ecu is good or fault. how can i check it? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 29, 2022 Report Share Posted August 29, 2022 You can power up the ecu outside of the car by clipping power onto the TVS diode as shown below. 12V to the stripped end, gnd on the other. Quote Link to comment Share on other sites More sharing options...
Muhammad Posted August 30, 2022 Author Report Share Posted August 30, 2022 gladly my ecu is good. thanks for your method. problem solved. all ground must be connected. i just recently rebuild the engine and put in car, and wasnt yet install all ground wire. lesson learned. Quote Link to comment Share on other sites More sharing options...
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