$12P Can't connect to 808 ECM.

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$12P Can't connect to 808 ECM.

Postby L67PSI » Fri Apr 21, 2017 7:57 pm

Hi all

I've got NVRAM chip and usb comms on 808 ECM. Have loaded the $12P bin onto DS1245Y chip. However trying to start the vehicle (VP V6) the fans come on. The code did verify after programming & had offset of 8000.

I cannot connect to ECM via Flashtool or from TunerPro OSE plugin. Here is a screen shot from TunerPro.

Maybe I have a few settings wrong??? Any help is appreciated.

Thanks
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connection_error.jpg
connection_error.jpg (91.42 KiB) Viewed 3648 times

Posts: 137
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Re: $12P Can't connect to 808 ECM.

Postby L67PSI » Fri Apr 21, 2017 9:32 pm

Re-reading guide says if $12P code is wrong then fans and CEL could be on.

I'll reprogram ds1245y and try again.

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Re: $12P Can't connect to 808 ECM.

Postby Dylan » Fri Apr 21, 2017 9:42 pm

I don't burn them with any offset. Just use the stacked bin in the zip download.

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Re: $12P Can't connect to 808 ECM.

Postby antus » Sat Apr 22, 2017 1:20 am

As above. Not sure if your hardware is genuine. Could also be faulty.
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: $12P Can't connect to 808 ECM.

Postby L67PSI » Sat Apr 22, 2017 9:34 am

Dylan wrote:I don't burn them with any offset. Just use the stacked bin in the zip download.



Ok, I'll try the stacked bin and see what happens.

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Re: $12P Can't connect to 808 ECM.

Postby L67PSI » Sat Apr 22, 2017 9:37 am

antus wrote:As above. Not sure if your hardware is genuine. Could also be faulty.



Yes, genuine NVRAM and ds1245y chip. Bought from VL400 few years ago.

Anything that I can test on NVRAM for faults??

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Re: $12P Can't connect to 808 ECM.

Postby antus » Sat Apr 22, 2017 10:11 am

Should work then. As Dylan suggested burn the appropriate stacked bin. Also check comms board wiring, strange that it dies when you start, could be an electrical short somewhere. Is the write wire installed? Try removing the RW pin after an initial flash to rule out problems with the write wire.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 137
Joined: Mon Dec 12, 2016 11:27 am

Re: $12P Can't connect to 808 ECM.

Postby L67PSI » Sat Apr 22, 2017 4:23 pm

Tried stacked bin, still didn't work. Fan comes on and engine runs really rough. No connection to ECM either.

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Re: $12P Can't connect to 808 ECM.

Postby L67PSI » Sat Apr 22, 2017 4:40 pm

Here is pic of NVRAM. Chip was out to get reprogrammed.
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nvram1.JPG

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Re: $12P Can't connect to 808 ECM.

Postby antus » Sat Apr 22, 2017 5:11 pm

Can you post up pics of the nvram chip? I'd like to check its date code.
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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