Re: How can I repair a 1992 wrangler ecu ?
I would check if there is 12V at the coil, when ignition switch is in run. Donīt know the wrangler, but expect to have the 12V there only for some seconds, when the engine is not started. So you will need an assistant for this. The ground will be switched by the PCM. If there is 12V at pin 2 from the coil rail connector, then or the coil rail is bad, or the problem is the PCM. If there is never 12V at pin 2, than i would change the auto shutdown relay first. By the way, you did check all the fuses first?