How to develop a standard car OBD2 diagnostic procedures

Development standards OBD2 diagnostic procedures to prepare the information and hardware
1, due to TL718 has created for you the physical layer, data link layer and part of the application layer protocol, so long as the OBD2 standard application layer protocol text, ISO15031-5 or SAE J1979 (two protocols are the same content).
2, TL718 diagnostic interface or a set of self-built circuit TL718 chip.
3, home PC, a computer desk.
4, install the software: Accessport debugging software and VC + + (or VB, BC + +, etc.) your favorite software development.
5, symbol OBD2 standard automotive engine computer one (or a car)

TL718 Information

TL718 with the microcontroller via a UART serial port, PDA, or PC RS232 communications, in some new equipment on a PC has no RS232 serial port, through a virtual serial port can communicate with the TL718, for example, USB TO RS232, Ethernet TO RS232, or Bluetooth TO RS232 and so on.

No matter what kind of physical connection, you can use HyperTerminal or serial debugging tools, send and receive directly from the keyboard character. When using serial debugging software, you must first set the correct COM port number and the correct baud rate. Typically 9600 baud (PIN6 = 0V), or 38400 baud (PIN6 = VCC, PP OC set default values​​). Serial port settings are: 8 data bits, Parity: 0, 1 stop bit. If set incorrectly, and TL718 will not communicate properly. All responses from the TL718 with a carriage return (0X0D) and an optional newline (0X0A) ends. Properly connected, turn on the power. TL718 will drive the test LED lights (flashes three times), send:

TL718 starting
If the correct receipt of the above information represents the serial port and connection settings are correct. The second line ">" symbol represents TL718 is idle, you can immediately receive data from RS232. If you do not receive a ">" symbol to send data to the TL718 may cause data loss. Incorrect response occurs. PC from the serial port to send commands to the TL718 format:
TL718 has two kinds of formatting commands
1, OBD connect command, a communication with the vehicle.
2, the internal command, all beginning with AT, do not communicate with the vehicle occur
send must 0x0d (carriage return) terminated ASCII characters carriage return character is behind TL718 discarded.
TL718 internal command "AT" at the beginning, followed by visible characters. Invisible characters and spaces are ignored attached.
OBD command can contain only ASCII code in hexadecimal (0-9, af, AF), spaces are ignored.
If you send a command that can not be effectively interpreted TL718, TL718 will return a "?" Indicates that the send command is invalid.
When processing OBD commands TL718, TL718 continuously monitors the RTS pin and RS232 input, any of which happens, TL718 will interrupt the current OBD commands, making it quick return to the prompt ">", waiting to receive a new command.
TL718 uppercase and lowercase characters can be received, spaces are ignored. Analogy command "ATZ", "atz", "at z" are the same.

2013.01V Auto CDP+ For Cars,Trucks And OBD2

There are 2013.01v and 2013.02v version of auto cdp .And the two product sell on our shop www.obd2works.com. when you choose a diagnostic tool, you should verify that your vehicle.For most OBD functions, such as adjustments and programmings, there are detailed instructions and help texts to assist you in your diagnosis work. You will find step by step information about prerequisites, preparation and implementation of various functions; making even the most complex function simple to perform.

Auto Cdp+ is equipped with an unique multiplexer technology, which allows it to be used on all types of vehicles, regardless of voltage levels and communication standards. For those vehicles that do not use the standard 16-pin connector, we offer a complete set of certified and customized adapter cables and kits.
Under this function tab, you will be able to see the adaptations and adjustments that are possible for a specific vehicle without having the vehicle near you. Together with the help texts as a guide, you can plan and be effective in your work; even under complex situations.
Intelligent System Identification (ISI) identifies and selects automatically the type of controller that is mounted in the vehicle. This ensures that the diagnostic session is performed correctly with the correct parameters as required.
For more Car Diagnostic Scanner,please visit www.obd2works.com

New GM Tech2 Power diagnostic tool for GM/SAAB/OPEL/SUZUKI/ISUZU/Holden

Hardware The GM Tech2 has been designed as a rugged, shop-ready tool by having: A sturdy case A sealed keypad Heavy-duty cables and connectors You can expect years of trouble-free service if you take reasonable care of the GM Tech 2 and follow the maintenance procedures outlined in Section II.

Power Supply (see Section IV) The GM Tech 2 can be powered from: The automobile battery power cable The cigarette lighter power cable The Tech 2 power supply The DLC (Data Link Connector) connection in most vehicles
Commands
The GM Tech 2 prompts you to enter commands via the membrane keypad for:
Retrieving and viewing diagnostic information
Selecting self tests
Performing vehicle diagnostics
Data Storage
The GM Tech2 contains electronic components called PCMCIA (Personal Computer Memory Card IndustryAssociation) cards, which store diagnostic programs. The GM Tech2 can be updated as vehicle modelschange by reprogramming the PCMCIA card via the RS-232 connector.
The Tech-2 is the same tester GM Technicians use to diagnose GM vehicles. The Vetronix Tech 2 comes with Authentic GM software and provides support for on-board diagnostics on all GM systems 1992 thru 2010.
Car model supported: GM/SAAB/OPEL/SUZUKI/ISUZU/HOLDEN
Now GM Tech2 price only $389.99,To buy the GM Tech2 please visit http://www.obd2works.com/new-gm-tech2-diagnostic-scanner-working-for-gmsaabopelsuzukiisuzuholden-p-40.html

"Automotive diagnostic technology" Questions

1, what car trouble? Common car trouble classifications are those? What car trouble:
Device or system in use there can not meet the required performance or loss of an accident execute a predetermined function of the state. (A) shows the situation by Category: functional failures, failure warning
(2) the process used by automotive urgency of failure Category: progressive failure, sudden failure
(3) Press the automotive manufacturing sector assessment of the reliability of fault: Fatal failure, serious trouble, the general failure, minor fault (4) Classification according to the degree the cause: human error, natural fault
2, what is the law of car trouble? What are its causes?
Cars failure rate can characterize the degree of car failure, that after traveling to a certain mileage failures per unit time and the number of cars traveling to the mileage of the car has not failed the percentage value is called driving to the mileage instantaneous failure rate, used to be called car failure rate.
Early failure period: the early use of a new car or a large vehicle, but also the run-in period, a high failure rate of accidental failure: the failure rate is closer to a constant, known as the effective working of
Depletion failure period: As each component wear, corrosion, fatigue and meet or exceed the use limits, resulting in failure to increase
3, the characteristics of human error
Due to automotive design, manufacturing, maintenance, human factors in the process of
4, car trouble symptoms (1) Condition mutation (2) sound anomalies (3) overheating (4) leakage
(5) smoke color is not normal (6) control or earthquake shaking (7) Fuel consumption Exception (8) with special smell (9) Auto abnormal appearance
5, artificial empirical diagnostic method features: (1) does not require any equipment or any other condition, in any situation can be carried out (2) only qualitative analysis of fault diagnosis method: Q, see, hear, smell, touch , try
6, the starter can drive the engine is running but can not launch the diagnostic steps
7, ignition system fault diagnosis of the general principles
(A) to determine the high-pressure circuit fault: Turn the ignition switch, turn the crank, reprint Liu Biao dynamic normal, but high points FireWire
No spark or spark is not strong and has launched the signs
(2) low-voltage circuit fault to determine: Medina, then switch ON, turn the crank, ammeter dynamic is not normal, that means ammeter
Needle stop at "0" or 3-5A or 10A does not move over a large current discharge
(3) high-voltage circuits integrated fault to determine: ammeter dynamic normal, high-voltage ignition spark is very weak pull out in time
Central high-voltage flashover tests showed strong weak fire in the high pressure circuit malfunction, fire weakly indicates fault in low-voltage circuits

New Autocom CDP+ for Cars/Trucks and OBD2 Verison 2013 Release1

FLIGHT RECORDER. With the flight recorder function, you can record parameters in real time while you are driving a vehicle. During recording, you can, with a press of a button, highlight the specific error so that you can investigate the detected error at a later time. CDP+ is equipped with built-in memory thus removing the need to bring a computer. Memory card not include in package.

MULTI COLOUR INDICATOR. With the multi colour indicator on CDP+, you have full control of the diagnostic process. Different colors and sound communicates the status and the placement of the indicator allows you to see it from a far. For example, if the indicator alternates between blue and green the CDP+ is in communication with the vehicle control unit.

CONNECTOR WITH LED. To locate the diagnostic connector in the vehicle with ease, even if it’s located in a dark and inaccessible place, there is a LED on the 16-pin connector to help you along. The location and the design allows the light to function even when using the adaptor cable for vehicles without a 16-pin diagnostic socket.

VOLTAGE CHECK. When CDP+ is connected to the vehicle, the unit will check the battery voltage of the vehicle and automatically adjusts itself to the vehicle’s voltage level of 12 or 24 volts. If the voltage gets too high or too low, CDP+ will warn you with both sound and light and you will also be alerted through the battery icon in our diagnostic software.

CHASSIS NUMBER VIN. In our CARS software, we have a smart function that allows you to read out the chassis number from the vehicle that you would like to diagnose. This ensures that the right model and year is selected automatically. In addition, engine code for vehicles, which are commonly available on the markets, is also selected automatically.

Now price:$99.90 
To buy the Autocom CDP+ for Cars/Trucks and OBD2 Verison 2013 Release1 
http://www.obd2works.com/new-verison-2013-release1-new-design-autocom-cdp-for-carstrucks-and-obd2-p-1404.html

Ten quintessentially British cars

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Range Rover gets stretched

Unless you’re, say, an especially tall giraffe or Jeremy Clarkson, it’s unlikely you’ll find the standard Range Rover too tight for space in the back.

But for those who require a little more length from their luxury 4x4 limo, Land Rover has today pulled the (very long) covers from the long wheelbase Range Rover.

The stretched Rangey measures a full 5.2 metres (17ft) from nose to tailgate, and adds an extra 14cm (5.5in) of rear legroom to the standard car’s already generous space by stretching the bodyshell between axles.

There’s extra lean as well as length. In the standard Range Rover, the rear seats recline to an uncomfortably limited nine degrees, while in the LWB RR, they angle back a business-class 17 degrees. As with the non-stretch RR, there’s the option of those lovely “Executive Class” rear seats, which replaces the standard three-seat bench with a pair of enormous individual chairs.

There is, emphatically, no seven-seat option. If you want a Range Rover to ferry lots of kids, the Sport is your choice. This is a one for the dignitaries and oil barons.

It’ll be offered only in range-topping (arf) Autobiography and Autobiography Black trim, the latter expected to tip the cash-scales somewhere around £140,000 ($226,000). 

Which is a lot of money. Then again, the RR LWB is a lot of car.

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