Renault espace 3 2000y UCH replace

**civiaks** · 23rd February, 2018, 04:13 PM

Hello, i have problem with renault espace 3 UCH, and i need to replace it. So, question is,,, if i fit UCH with diference code, it is posible to reprogram the UNIT to work properly with that RENAULT? I heard from people who work in scrapyard that they met with this problem(after replace UCH some functions stop work and extra lights came in dash.

Maybe someone have experience with that.

**rafal** · 23rd February, 2018, 06:23 PM

swap HC08 and job done

**civiaks** · 23rd February, 2018, 07:13 PM

ou, so i can just write dump file from old UCH to new? Dont have to desoldering tool for that kind of chip, but i can read from board.

**rafal** · 23rd February, 2018, 07:24 PM

read ori dump and save ( just in case ) and write to used one

**civiaks** · 23rd February, 2018, 07:48 PM

Thanks

Will try it in few days, need to find other UCH, at first.

**civiaks** · 24th February, 2018, 04:33 PM

Or, maybe someone knows, what is the common faults is in this UCH. Specifically in my car, when the UCH is cold(now in my country temp. is minus 10), the turning signals, windscreen wipers, driver side window and instrument cluster is not working. And its enough to blow hot air to UCH to get all those things wake up. I tried to look for poor soldering spots, but found only few SMDS with micro splits. Maybe need to resolder all things

**rafal** · 24th February, 2018, 09:20 PM

common problem is with hc08 - just have enough

**civiaks** · 26th February, 2018, 04:17 PM

Problem solved, with new(old) UCH from scrapyard. Lucky me, to find it with identical part code

Bought two, just in case. Other one with one different last digit.
Did not need to program immo, maybe it was disconected before me.

**civiaks** · 27th February, 2018, 07:06 PM

Ya, but tried to read hc08 with carprog, without succes... Heard that people have problem to read it with carprog.
What it can be? china clone wiring colors on A10 cable fixed, colors now like original, so it is conected to right pins. I lift IRQ and PD3 pins. Tried with reset lifted. And all tests without succes. After reading, Carprog just showing nothing, no errors or something.
Its intresting that IRQ cable showing 0,8v when reading (codecard manual saying that there must be 10-11v signal, maybe that is the problem).