Data Communications Link (DCL) - CART/UART

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wwhite
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Data Communications Link (DCL) - CART/UART

Unread post by wwhite »

I have 100% decompiled the DCL - CART/UART protocol data stream for transmitting and receiving.
Using plain Java, a MAX485 chip, can now communicate with the EEC's that have the 81C62 or 81C65 CART chip, on the D+ and D- test connector.

The C3P2 lightings have mode 0x05 which is for 'Alternate Calibration'. Has any one had success with that?

I am really interested in the following modes:
- 0x43: DCL_DM_ProgramDataDownload
- 0x45: DCL_DM_ProgramExecution
- 0x46: DCL_DM_A-D_SensorValueSubstitution

Has any one had success with this?

From what I understand, is that using A-D_SensorValueSubstitution, this is kept in KAM, and should be able to change any PID value.

I'll be posting my source code, and schematic of the MAX485 once I have more testing complete.
m0l0
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97 Cobra : Stock Just Tweecer RT

Re: Data Communications Link (DCL) - CART/UART

Unread post by m0l0 »

Very Interesting development, always was interested on those pins and what protocol the use, if there was anything we could use , but never found anything on it.

"I'll be posting my source code, and schematic of the MAX485 once I have more testing complete."

Please do! i would like to try this on the ecu on the bench i have
jsa
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GHAJ0
SMD-190 / SMD-490 EEC-IV

Binary Editor
ForDiag

Re: Data Communications Link (DCL) - CART/UART

Unread post by jsa »

The Czech program ForDiag works for DCL if you want a commercial product.
m0l0
Posts: 3
Joined: 2021 Feb 16, 01:08
Location: Mexico
Vehicle Information: 89 LX : 351w AFR185,Trickflow R Intake,Lunati 51014,BBK Headers, On3 76 A9L2
97 Cobra : Stock Just Tweecer RT

Re: Data Communications Link (DCL) - CART/UART

Unread post by m0l0 »

Thanks a lot for the reply, and sorry for the very long response, not really looking for commercial , just curious and tinker with it!,
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