Opel Frontera Checkum Delco CURN

[Metaller27]

Here picture from the ecu

[antus]

If 3008 to AA doesnt help, also try FA44 to 3006, so from 3006-3008 it'll be FA 44 AA.

That PCM looks incredibly similar to the PCM in the 2000 Holden (Isuzu) Jackaroo with 3.5L 6VE1 engine, which someone else posted a picture of the pcb here: viewtopic.php?p=90604#p90604
Very similar layout, most of the same ICs, but some of the extra spots populated.

Blue not brown connector on the outside, and does not have the socked eeprom (did you do that or is that factory?) or what looks like a header on the PCB next to the eepom to connect to the address and data lines for development purposes.

[Metaller27]

with blue is x22se, with yellow is in germany y22se util 2001 and in usa x22se util 2001. the socket is from me.
i have also v6 6vd1-w 3.2 with blue and 6ve1 3.5 a lot of version, and delphi 29f200 util 2001 with v6.

3006-3008 i will test

[kur4o]

Did more static analysis of file structure.
For proper disassembly
first 0-7fff is constant and there is 3 banks[8000-FFFF,10000-17fff,18000-1fff] for 8000-FFFF that are switched on the fly in the code.

So to get the checksum banks are switched at some point and each is added to checksum at 1 point.

If it is simple sum it will be easy for guess. Some good diss will help a lot.

[kur4o]

I think I found range. 10000-17fff, 18000-1ffff, 2000-2fff,3009-FFFF
simple 16bit sum. Someone need to test it,

Checksum at 3006

[antus]

I'm trying to write a small app to calculate the sum. Ive tried 8 bit (16bit store), 16 bit (16 bit store), start at 0000 and count upwards. So far, no match. There could be bugs, will re-check my work. Have not tried 2s compliment or count down from FFFF, might give those a try too as they're sometimes used for 16 bit sums.

[kur4o]

Pattern matches.
2 files are bad x22sedhbkaustra.bin is modified and checksum don`t match.
second ori.bin file is junk, some data is misaligned, maybe the dump was bad.

[Metaller27]

Hi Antus, with 3006-3008 car no start, no diagnose. Kur4o wow i´am excided, checksum is correct, i tested dljy, dpzl.
i have also the DTC 0112 when i delete the other DTC in list. I made a resistor 180Ohm for the DTC P1627, all ok now, i tested with drive a longer time.
Austria Dhbk must i load new via SPS, the ori files are from Frontera i load also and reload.

[kur4o]

Great it worked.

Do you have some vins associated with this PCM.

I want to look over some tis files.

[Metaller27]

Send Vins at weekend i'am on road 2 days.

Any Idea why P1627 after earse a new DTC 0112 create?