I have read on this forum for years over the course of my 2 runners I've had. I now find myself at the last resort making a reply on this 14 year old thread. Was any one ever able to solve this radio issue in the '97 4runner? I just picked up a '97 Limited about a week ago. It had an aftermarket radio installed in it that did not work. I decided to reinstall a factory radio I picked up at a junkyard. I have the exact same issue now. I have the window sticker saying will not work if removed, I have a stock head unit from a '97 4runner SR5 out of a junkyard, as well as one that came out of my previous '98 4runner (confirmed works) and the stock amp from that vehicle. Neither radio displays a screen or lights. Currently installed I have my previous stock deck from the '98 SR5 installed with the matching AMP. I've tried holding the "Power button, 1, 4, & 6" to attempt a "Master code" reset with no success. I also have a CD player that ejects a CD, however, no ability to re-insert it.
I Just installed a new heater core in the '97 and had the positive and negative terminals disconnected while the dash was out for safety while removing the airbag. Now that I have finished that job the radio is in the exact same non-functioning condition it was in before I started the heater core project.
I have checked over all the fuses I can see in that car. Seemingly it never had a dome light that functioned. I diagnosed that, and in the midst of it arc'd out against some metal in the headliner while removing the bulb to inspect it. Found less than 1 volt to the dome light when switched to "on" I replaced the 15 amp "DOME" fuse and restored functionality. With still no success on the radio. I'm out of ideas at this point and would really enjoy using the stock radio for the time being. ANY HELP, sly remarks or comments would be greatly appreciated on this!