Now here comes the MOST important part! There are soooooooooooooo many elm327 cables out there made in dodgy Chinese factories.
Aldl protocol software#
Software on ELM street though has been developed by myself, and is dedicated to Holden commodores only meaning it will read all Holden specific information including fault codes and engine data! Supports a whole bunch of protocols for multiple vehicles! But, it cant read out Holden specific fault codes of engine data parameters Software on ELM Street (SOE) (Can read Holden Specific faults codes and Holden specific engine data!)
Aldl protocol free#
but has free trial, give it a go!! Cant read Holden specific info either!) EasyOBD2 (free!) Developer prevents normal elm327 cable now. but lacks the “power” to send large amounts of data.īut as for available diagnostic software.theres alot of useless, rubbish software out there! Many of which cant read Holden faults codes! But there is a couple "good" software solutions: ELM327 has the correct “language” to do this. This sort of information is heavily under wraps as the big tuning companies don’t want there prized possessions (tuning cables) to be massed produced at a small cost. Now to get things straight, you CANNOT tune your car with an EM327 cable… Well. and to be specific, they will use CAN 11bit/29bit on both High and Low speeds to communicate absolutely everything in the car even including little messages that pop up on the instrument screen!.Īvailable OBD2 engine/tuning data software Whereas the VE (and I guess VF) only use OBD2 protocol. But use ALDL to communicate between everything else in the car eg radio,cluster,climate control, bcm ect. What other electronics/modules in my car use OBD2?įor Holden Commodores VT,VX,VY LS1 V8's and VZ V6/V8, these only use OBD2 to communicate with engine related data. just one speaks much quicker than the other!Īlso note, that VT,VX,VY,VZ V6/V8 also communicate over ALDL for everything EXCEPT engine data. *Note, CAN high and CAN low are the same protocol. Just to be clear, the OBD2 protocols used in commodores are: VPW, CAN 11bit High, CAN 11 bit Low, CAN 29bit High, CAN 29bit Low. But heres a list of commodores supported: So pretty much all V8’s (LS1) will require an ELM327 cable to read engine related information. Meaning whether your car speaks VPW, CAN 11bit or CAN 29bit, the ELM327 will be able to communicate over all these protocols. So, an ELM327 is a diagnostic cable that can communicate over ALL of these protocols (languages). Each of these languages “sound” different although the exact same information can be sent through if “spoken” correctly. think of it like being able to speak English, Chinese, Japanese. OBD2 isnt just one “language”, it has multiple different protocols. It is used to communicate to all the modules in the car and allow scantools such as the tech2 to request specific information such as faults and even allow clearing them!. So, OBD2 is the protocol (language) that pretty much all newer cars communicate over.
So here is another crash course in OBD2, cars supported, available software and some raw communication breakdown to define the difference between protocols! it can be hard to find which ones are reliable! And there are so many OBD2 cables out there. Now, theres actually HEAPS of information out there about OBD2 diagnostics, although it can all become a bit confusing since OBD2 isnt just one “language”, theres actually a few different protocols that cars talk over. Recently I just posted up a thread about ALDL diagnostics, for those interested check it out here: Everything to know about aldl diagnostic cables