Interface Info: ECM Serial Data Protocol. This includes but is not limited to vehicles using a 12277165 ECM.įor the puprle trace, the first bits are 0's, and the last bits are 1's. WinALDL is software to datalog on GM vehicles that use the old 160 baud rate. GM, Saturn, EDR, event data recorder, GM air bag black box deployment crash data recovery, listed GM airbag technical information. bottom green trace is shown 2x faster, at a 1. The top purple trace is on a 5 milisecond grid. The above picture depicts a snapshot of data from the ALDL connector. I also have some DIY_EFI archive info the 8. Not much has really happened since then but I keep the page here to assist. 7 I was unable to find any free scan tool so I whipped up a nasty basic program to decode. A great freeware PC scan tool is now available and obsoletes the software available here. If you have any useful feedback let me know and I will add it.). Maybe it's taking search hits it doesn't deserve or it's still of use. 0, FYI This page is quite obsolete and links are not being maintained. What is needed to monitor my engine? There are 3 things needed to access the diagnostic data stream from a GM based On Board Diagnostic 1 ( OBD1) system on your 1982.
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