90 Accord Coupe EX 2.2 Automatic ? about transmission Computer

[davidcrevenston]

Hello to all I have a 90 Honda accord Coupe EX 2.2 Auto and was wondering what kind of transmission computer will work with my current transmission computer and model car. Example I was at the salvage yard pulling transmission computers out for my 90 EX and I got one from a 4 door auto 90 EX OR LX MODEL and the other computer was from a 2 door 91 auto EX OR LX MODEL. 1 computer was brand name OKI the other was Denshigiken Ecu transmission computer. So obviously there is some major differences here. Can someone please tell me what the differences are, How I can tell which ecu will work with my make/model accord, and if there is a way to tell from my vin # what kind of ecu transmission computer I have i.e. OKI or Denshigken? Please advise me and thanks for your help as this is a technical matter/question for the Hondas from 90-91.
Dave

[wed3k]

the part numbers are different but i dont know if they would differ in functionality
TCU PARTS INFORMATION
Built Location Automatic Transmission Control Unit (Redesigned) Part Number for 90 Accord
Japan-built EX: P/N 28100-PX4-932 H/C 3523933
Japan-built LX & DX: P/N 28100-PX4-922 H/C 3520269
US-built EX: P/N 28100-PX0-932 H/C 3521796
US-built LX & DX: P/N 28100-PX0-922 H/C 3521788

[Joshy]

I highly suggest opening any TCU prior to your purchase. If you're at a pick-and-pull, unscrew the case to check for fried resistors and leaking capacitors. If the board is free of either problem, you can rest assured that it'll work.

Alternatively, if you've got a knack for electronics and soldering, you can also repair most defective TCUs by replacing problematic components. These resistors and capacitors can all be found at any electronics store.

Here are some example photos of what to look for...

Burnt resistors (most common point of failure):


Leaky capacitor (cylindrical, drum-looking component) with burnt resistors:

[hmchaos]

fix it yourself

if your up to it, check the "diy section" i put up a tcu repair there. its pretty damn easy and my hasnt had any problems yet