I installed a factory depth finder on a 2005 X-2. Part of the installation requires you to disconnect one of the plugs from the MMDC. At some point I connected everything back up and turned the key to check things out. I got a flashing "ECU" annunciation. Well, I tried several things and eventually got all back to normal. I finished the depth finder installation. When I went to turn the key I get the flashing "ECU" annunciation. Only, this time no matter what I do, I cannot get things back to normal. I have double-checked everything. One thing that I notice is that the "calibration" noise that you hear from the engine area (I think that it is the Perfect Pass) is not making any noise. When everything works, you hear that noise when you turn the key. Is there any way to reset the MMDC or the ECU? Please help!
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How to Reset ECU/MMDC?