This iOBD2 scanner is specific for Volkswagen group vehicles including VW,Audi,Seat. iOBD2 VW also has specific function including read all system fault codes and service resetting.
iobd2 (vw dedicated) is for the development of a VW vehicle information very professional intelligent interactive systems. The applications include: expert diagnosis, service reset, connect, history and other functions. Expert diagnosis: [Read DTCs] read the whole car more than 80 system fault code and fault code details. [Clear] clears trouble codes vehicle fault codes for all systems. [] Read vehicle dynamic data flow stream value for all systems. [Vehicle information] read ecu version information. [Service Reset] This feature also includes the vehicle mileage reading, maintenance light reset, maintenance and zero oxygen sensor lights. [Connect] under your car a part of your new record, this record can record your car's systems are supported, as well as the testing process all the data records. [History] query and delete your testing process in the preserved records.
Note: Before using the system need to contact the Company to purchase special edition iOBD2 vw diagnostic connector (www.iobd2.cc).
Home-brew car diagnostics generally do two things. With a little knowledge, they can save you money on car maintenance. And they can also be a lot of fun.
It's the latter that the xTool iOBD2, a combination of hardware and app that supports iPhone and Android, majors on. That's not to say, however, it can't do the useful bit.
It's at least as powerful as most low cost on-board diagnostics readers, possibly more so. But it gets the job done in a much more user-friendly way and throws some extra features into the mix. Best of all, it connects wirelessly to your smartphone.
What are on-board car diagnostics?
But let's not get ahead of ourselves. First a quick recap on what, exactly, digital car diagnostics involves.
It starts with the OBD II, or On Board Diagnostics Version 2, port. It's an industry-standard data port that provides an interface for pulling car diagnostics and error codes, among other info, in a common format.
OBD II was made mandatory in 1996 for all cars sold in the US. The European Union didn't follow suit until 2001. But the US stricture means most cars sold in the UK after 1996 have an OBD II port.
It's typically found somewhere under the dashboard. In our test car, a 1997 Porsche Boxster, the port is freely accessible without any dash disassembly, if slightly obscured. So a little neck craning aside, getting at it is no harder than, say, the USB port on the back of a tower PC.
A wide range of data can be pulled via iOBD2, from engine error codes to sensor data and current operating parameters like coolant temperature and road speed. Exactly what can and can't be read will depend both on your reading equipment and the make and model of car in question.
The OBD II port can also be used to program car ECUs, for instance resetting error codes. But that's another level of sophistication that doesn't apply to relatively straight forward readers like the xTool iOBD2.
What is the xTool iOBD2?
Those familiar with OBD access will probably be used to either a standalone reader or something that plugs into a laptop. Either way, we're talking cables.
The xTool iOBD2's party trick is wireless operation. It's a compact unit, not much larger than the OBD port itself and slightly narrower than an iPhone in width.
Once plugged in, it draws power from the OBD II and boots up a wi-fi access point. Having first installed the free xTool app on your handset, you then connect to the iOBD2's wireless access point, plug in some simple network settings and you're good to go.
The initial connection and syncing routine as you set up a profile for your car is a little sluggish. But from then on, it's quick to get going from a cold start.
The first menu gives you access to the iOBD2's main functionality. Boiled down to the basics, that's current vehicle status, diagnosis / fault reading and car performance.
The vehicle status screens provide what amounts to an alternative car dashboard. You get numbers for road speed, engine revs, fuel consumption and a trip computer.
Exactly which functions are and aren't supported will vary according to make and model of car. But here's the interesting thing. iOBD2 can unlock hidden functionality in your car.
For instance, some cars don't have optional displays fitted that show, say, fuel consumption over time or at a given moment. But it's likely the car's ECU is still calculating and storing those numbers. iOBD2 can get you at them.
It's a cheap and easy way to get at such data, then. That said, iOBD2 doesn't stack up as a replacement for you car's main instruments. There's too much lag between, for instance, changes in engine speed and the display updating.
xTool iOBD2 diagnostics
Fault detection and diagnostics is iOBD2's next major feature. In simple terms, that means pulling out any error codes that the engine or the various sensors have logged. This might be anything from a faulty crank sensor giving odd numbers to an exhaust sensor that detected a running problem or a fault on a catalytic converter.
A little knowledge can be a dangerous thing here and anyone who knows anything about OBD error codes will be aware that the faults are often not quite what they seem. However, for more experienced users or as additional information to give your garage or mechanic when you drop the car off, it can still be very useful.
For the more experienced, there's also a wide range of live data that can be monitored. First, pull up the menu. Then select from a long list of options, including coolant temperature, ignition timing and air flow.
You then get a customised list of live values for whatever you've selected. Again, you'll need to be fairly knowledgeable to make full use of this kind of data. But even casual users can make good use of some of the numbers.
A good example here is coolant temperature. Most modern cars have heavily buffered temperature gauges, if indeed they have a coolant gauge at all. Much of the time, that's just fine.
But having a precise handle on coolant temperature can help you spot problems, like the beginnings of a head gasket failure, before they become really serious.
xTool iOBD2 car performance
The final major feature involves car performance. The drill here is pretty straight forward and involves acceleration and braking tests.
For starters, you can do classic 0-60mph or ¼ mile standing start tests. You can also measure the distance taken to brake from a chosen speed. All of the results rely on data from the car's ECU, so the accuracy isn't perfect.
But it will give you a rough idea of what you car is capable of, either just for fun or to help confirm it's running correctly.
Just bear in mind that such testing on public roads may not be legal. If in doubt, the use of some kind of private facility is in order. Several airfields and tracks around the UK can provide this kind of access on a reasonably affordable basis.
Verdict
Exactly what you make of the xTool iOBD2 will depend on a fair few factors, including your car and your knowledge level.
Roughly half of the diagnostic features were nonfunctional on our test car, for instance. This is no fault of the xTool iOBD2, but it is worth bearing in mind. Generally speaking, the older the car, the fewer features will work.
The lag in terms of displaying data through the live feeds is also a little disappointing. It's fine for things like coolant temp. But the second or so of lag makes the rev counter, for instance, pretty pointless.
Likewise, we wouldn't treat the performance testing data as the gospel truth regarding your car's capabilities. But those caveats aside, the xTool iOBD2 works pretty brilliantly. It's easy to set up. The wireless connectivity means it's practical to leave connected at all times. And the app itself is super slick.
Granted, a basic plug-in reader can be had much cheaper. But such devices are neither as fun, nor as powerful.
Under iOBD2 [Diagnosis] menu key Engine Diagnostic features includes:
[Read DTC]: Read the current DTC (Fault Codes) the engine has stored.
[Clear DTC]: Clear all the current DTC (Fault Codes).
[Live data]: Read all the Sensor parameters that related to the Engine ECU.
[Freeze frame data]: OBD systems record exactly when a engine fault occurs and will save sensor parameter data when the DTC is set. And this group of data is called freeze frame data. [Readiness test]: Readiness reflects the status that all the valid diagnostic functions. The diagnostic functions are referring to the important monitoring functions in OBD system, e.g. Lambda Sensor monitoring, O2 sensor heater monitoring, and EGR system monitoring, etc.
[Read vehicle info]: Read vehicle info such as Vehicle Identification Number (VIN), Calibration IDs (CALLID) and Calibration Verification Number (CVN).* [Sensor test]: This service is to allow access to the on-board oxygen sensor monitoring test results. The same information may be obtained by the use of [Mode 6 test] *
[Mode 6 test]: This service is to allow access to the results for on-board diagnostic monitoring tests of specific components that are not continuously monitored. Examples are catalyst monitoring and the evaporative system monitoring.*
[EVAP System Test]: The purpose of this service is to enable the external test equipment to control the operation of an on-board system, test or component *
*Please note some functions and features are vehicle specific and may not be available depending on the make, model and age of your vehicle.
