JACKAROO / isuzu trooper 4JX1 3ltr tdi

Holden Delco ECU and PCM Tuning
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JACKAROO / isuzu trooper 4JX1 3ltr tdi

Postby Aussielegend » Mon Apr 16, 2018 5:33 am

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Hi everyone a bit new still to ecu pcm hacking however im wondering if someone might point me in the right direction to communicate via this hidden port inside a 4jx1 ecu.

Im planning on playing around with it but im not too sure where to start.

Any help is greatly appreciated.

20170214_210843.jpg

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Re: JACKAROO / isuzu trooper 4JX1 3ltr tdi

Postby antus » Mon Apr 16, 2018 4:51 pm

The biggest highest density chip would be a Motorola HC11 processor. The 3 row header in the white box with ABC looks like a standard Delco/Delphi header that would contain address and data bus lines. The blue connector, I dont know. I'd pick the pinouts for a HC11 processor, such as the F1 footprint and see if that main chip lines up. If it does look for the BDM pins and get a USB-BDM-NT interface and try and read it. But these are not a well known PCM and you might run in to walls and get no answers quickly. The above is about the extent of my knowledge on this one.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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Re: JACKAROO / isuzu trooper 4JX1 3ltr tdi

Postby Aussielegend » Mon Apr 16, 2018 10:33 pm

Thank you for the reply Antus its going to be a work in progress for sure

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Re: JACKAROO / isuzu trooper 4JX1 3ltr tdi

Postby antus » Tue Apr 17, 2018 8:40 am

Actually i just realised this is the tdi which is later then i was thinking so less likely to be a hc11. I found some details here discussing that you can do some fuel trims with a tech 2. The bdm comment still stands as it has that 3 row header but it clicked that thd hc11 is too early for bdm. http://forum.australia4wd.com/index.php ... rs-to-ecu/
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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Re: JACKAROO / isuzu trooper 4JX1 3ltr tdi

Postby ejukated » Tue Apr 17, 2018 9:42 am

Do you want to communicate for logging or to read the flash?

Looks to be a 2mbit flash chip next to the processor, you could desolder if you have the equipment or perhaps try a test clip

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