The most common scantool for this job is the ELM327 cable as pictured to the right. OBD2 Cables main use is for looking up diagnostic trouble codes,history fault information and also viewing live engine data.
So technically, ALDL, VPW and CAN are all different protocols, that speak different languages and all have there specific functions. This means theres a whole heap of available information,software and knowledge on the web as this standardized protocol is widely used,reversed and developed around the world. Looking specifically at the commodores, the OBD2 protocols that GM uses is VPW and CAN protocols. All models and manufactures must meet the bare minimum criteria which includes looking up fault data, engine data and other diagnostic information. I have narrowed the problem down to either the engine coolant temperature sensor (is that what controls the relays to. To the left of the bottom of the glove box.If you. the coolant, the water pump seems to be working, the pressure cap is a new one with the correct pressure. This is the location of the OBDII port on Integra years 1994-2001.Camera angle is from the passenger seat. OBD2 has a major difference in the interpreting of this data compared to ALDL, its all standardized therefore it is very simple to understand. Hello, I have been having some over heating issues on my 1996 Seville STS Northstar. On older model Accords, you can retrieve trouble codes by inserting a jumper wire at the diagnostic connector located in the passenger side kick panel. But in fact, theres a whole heap of OBD2 lanaguages, think of it as being able to speak English with a different accent, it sounds similar but isnt quite the same. Since your Honda Accord is pre-OBD-II it does not have an OBD-II Data Link Connector which would normally used on a 1996 and newer Honda Accord to pull trouble codes with a scan tool. 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. I hate their replacements for these (the Echo and Yaris) - they are ugly and slow in comparison.Starting with ALDL cables (Also know as OBD1 or GM OBD), these types of cables communicate over a very basic protocol. I actually still see quite a few these cars (as well as mid-90s Honda Civics) on the road during my commute, so people out there are still lovin' these things. It's not the coolest looking car on the road, but it's got an old-school vibe. Add to that about 40 mpg on 87 octane and it just makes sense. It also has non-power, mechanical rack-and-pinion steering, which gives it a go-kart feel (it'll work out your forearms too!). It's crazy how quick this little junker is, actually. The number one reason I love this car: it is simply very fun to drive! This car is a tiny featherweight compared to today's bloated "econo" cars, so 93 hp is plenty and acceleration feels immediate and strong (it's a 4-speed manual), not to mention that you can peg the speedometer to 110 with little drama. Of course, she drove it very gingerly and always kept up with the maintenance. The 16 pin connector in the 1996 C4 is used for the much more complex OBD-II system and a scan tool is required to discover the OBD-II system's secrets. The 19 model year still used the OBD-I system even though they have 16 pin connectors. My mom gave me this car w/ 276,000 miles on it and it is still going strong. After that, a 16 pin ALDL connector was used.