I would liek some help with CCM/BCM data

[-=Jeff=-]

I had started a project that would use an Arduino to access the ALDL and display on a touchscreen in the car. The touchscreen is installed in my car and is setup to replace the Idiot lights (Brake, SES, etc). I thought adding the ALDL data would be nice. however I know I need to silence the CCM/BCM to display data. This would not be a logger as I have ALDL Droid and TunrePro for that. this was more for info since I have the screen..

Anyway I captured the data chatter prior to connection for the ALDL diag commands and I cannot seem to find all the info. Here is a snippet of the code



10 590A 4100 004C // CCM Broadcast
4055 6B41 6100 0F00 4146 019E 0FCF 7A00 3B96 // Command from?
10 590A 4100 004C // CCM Broadcast
4055 6B41 6100 0F00 4146 019E 0FCF 7A00 3B96 // Command from?
10 590A 4100 004C // CCM Broadcast
4055 6B41 6100 0F00 4146 019E 0FCF 7A00 3B96 // Command from?
10 590A 4100 004C // CCM Broadcast
4055 6B41 6100 0F00 4146 019E 0FCF 7A00 3B96 // Command from?





This repeats. I found the CCM Broadcast info, however I have not found the other command.. any ideas? I do know the command starts with the 0x40 and the Checksum is the 0x96

Car is a 1990 Corvette ZR-1. I have attached the ALDL Streams, A111 and A114 for this car

if that info is useful I might display it as well, I just need to find out what it is

THANKS!!!

[dave w]

Maybe this gearhead-efi thread (post #6) will help: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?7398-1990-Corvette-Datalogs

dave w

[-=Jeff=-]

Thanks Dave,

I have a working ADX with the silence commands and the Enable communications.. it works well and i can implement that in my Arduino build.. However I am curious what that unknown line of code is. it would be fantastic to find out what it deciphers to. meanwhile can setup up the screen to update and not update as I think silencing communications affects the LCD updates.. I am assuming the CCM is spewing the 0x40 message..