mazda 3

[epd1221]

2004 mazda 3 2.3l usa
need a pair of working eeproms
dash and ecu
ecu its a mitsubishi with 24c02 inside
dash has 93c56 inside

customer replace dash and old dash is long gone .. any help is appriciated

[cjawahir]

hello friend , are you sure thats the engine ecu 24c02 chip , most mazda 3 the ecu is on top of engine air filter .

post a pic

cj

[gjuzel]

2004 mazda 3 2.3l usa
need a pair of working eeproms
dash and ecu
ecu its a mitsubishi with 24c02 inside
dash has 93c56 inside

customer replace dash and old dash is long gone .. any help is appriciated

these are the km???

[cjawahir]

hi , the last file is the engine ecu did you find the 56 chip in that one .

i have a pair dump but its diffrent from your ecu .

but still post the dump from engine ecu , chassis number is written there .

cj

[epd1221]

theres no 963c56 on the ecu Theres a 24c02
part L374 18 881C
E6T52276H1
MITSUBISHI

[Dangar]

Hi,
I'm trying to do an ECU swap in my nephew's Mazda 3. It was a 2.0L, he has dropped a 2.3L in, the 2.0L ECU will start it, but it barely runs. The 2.3L won't even crank, of course, because the IMMO codes don't match.

I'm struggling to read the chip numbers, they seem to be covered in some goop. The image is the same PCB as yours. Can you please tell me which chip is the EEPROM on this ECU, I tried replacing the IC at the bottom near the crystal, which is missing on yours. That was a chip with a slightly narrower case style, which is why I guessed that one first. Still no crank.

Any help appreciated.

[Dangar]

All good, got it fixed. Swapping the 24C02 chips between the ECUs got it running. I did guess correctly which chip it was, just my solder work wasn't up to scratch on the first attempt.

Cheers,
Dangar.