Where exactly is the transmission computer TCU located on a 92 Mitsubishi Diamonte?

uh..page 122 I think... ...everyone should have a manual for their vehicle, and the library should have a professional shop manual available for FREE to make copies of...read up and repair like a PRO! Dave :) -------------------------

Thanks, Dave, but I'm pretty sure he was asking where it's located in the car. ;-) Besides, I have the shop manual for the Diamante and the TCU isn't even mentioned.

I'll assume that your car has the LS trim level (DOHC engine), but I doubt it's in a different place for the ES (SOHC engine). The TCU itself is located clear under the back of the console, in the center near the firewall. The easiest way I've found to get to it is to pull back the carpet on either side of the center console (in the area where your feet go). Get on the floor and look toward the front of the car through the new holes you created; you should see a gold box lying horizontally (if you're looking from the passenger side, you'll see the wiring harnesses as well).

Getting to it could be a bit of a pain, though: it's not exactly meant to be removed. First, of course, make sure you disconnect the car's battery, and grab a light -- there's not much of it where you'll be working. There's a bit of metal frame behind the carpet that you've pulled back; you'll have to remove that on both sides to get to the computer (there are two or three screws on each piece, which is less than a foot long). You can proceed from here in one of two ways: either undo the bolts on the bottom of the mounting bracket and take out only the computer, or undo the one bolt on the floor and the two bolts behind the TCU on the wall and remove the bracket with it. Either way, you have to work from both sides to get it out. Once everything's unbolted and the wiring harness unplugged, press the gas pedal all the way to the floor and pull the TCU out on the driver's side (if you left the bracket bolted in, you'll have to lift the computer slightly to free the bolts from the bracket).

~Pengauin

Source: Just pulled the TCU on my '92 Diamante