OBD2 is the “Generic” name for this communication language. So why is this important? Imagine 20 people all trying to speak at once, it would feel pretty crowded and “noisey” wouldnt it? Meaning that alot of information is being passed all time so any software developed for ALDL cables needs to be efficient and effective to be able to keep up the the busy line! This information is sent out in an orderly fashion that all the cars electronics can see, It is mainly directed at the BCM (Body Control Module) since it is the BUS master which looks for all the other modules signals to ensure all components are working correctly.Įnough about the modules, looking more into the inner workings of an ALDL Cable, the information obtained from the car is fed directly through the ALDL cables chip and the raw data is passed onto the computer. Specifically looking at Holden Commodores, VR to VZ Commodores use this Protocol to communicate been majority of the cars electronics to pass important information and status’s ranging from seat-belt status all the way to airbag deployment. This protocol is”non standardized” meaning GM implemented a communication protocol that is not be exactly the same as any other vehicle let alone any other manufactures. ![]() ![]() Starting with ALDL cables (Also know as OBD1 or GM OBD), these types of cables communicate over a very basic protocol.
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