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Are there any requirements fault diagnostic instrument OBD?


Car OBD reader general fault diagnostic instrument requirements including four aspects. A, diagnosis connectors Second, communication protocol Three, diagnosis service scope Four, diagnosis fault code fault display About diagnosis connectors, below I introduce.


OBD general fault diagnostic instrument and the connector between vehicles use uniform diagnosis connectors, and not one of them of the definition of the pin can be preserved for diagnostic instrument to expand in the future use.


The communication agreement means OBD OBD general fault diagnostic instrument and the vehicle is the communication between the system CAN use communication protocol have ISO 9141, SAE J1850 41, 6 Kb/sPWM (pulse width modulation), SAEJ1850 10, 4 Kb/s VPW (variable pulse width), ISO 14230 (KW 2000), ISO 15765-4 (CAN), SAE J1939-73 (CAN). According to SAE J1978 or ISO15031-5 requirements, any vehicle only be allowed to use a communication protocol, in order to compatible with all sorts of model of OBD system, car general fault diagnostic instrument must be able to support all of the above agreement.


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OBD History
The Unites States Environmental Protection Agency (EPA) required OBD to become standardized in 1996. Vehicles 1995 and earlier use use diagnostic systems unique to their manufacturer. For example, diagnostic procedures for a 1990 Ford and a 1990 Chevy Blazer are not the same. Vehicles after 1996 use the same process and system of codes.

OBD I Only Scanners
Vehicles predating 1996 can be placed into self-testing mode. Trouble codes are conveyed by a flashing check engine light. There are scanners available for these vehicles, but each vehicle needs its own dedicated scanner. The question here is whether or not it is worth buying a scanner at all, due to their limited use and functionality.

OBD II Only Scanners
Most OBD II scanners are not reverse compatible. They will not be able to read code from vehicles predating 1996. They can be widely used on makes and models after 1996, however. When comparing scanners, a potential buyer needs to assess how much they will use it. Scanners can be simple code readers, good for only retrieving active codes from the OBD-II system. More expensive scanners record and display live data from a vehicle's array of sensors.

Multi-Functioning Devices
As technology becomes more advanced and sophisticated, OBD scanners become more complicated. Some scanners can be programmed to interact with other diagnostic systems, like anti-lock braking systems brakes. There are also other devices called micro-tuners. Not only can these read code and monitor sensor data, but they can be used to reprogram your vehicle's powertrain control module.

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Comparison Shopping
Make a list of everything needed. Consider the following questions: How many cars will it be used on? Will it be used for more than just OBD coding? Will it be needed to monitor sensors? This list can be used as a reference point while shopping online or in an auto parts store


How to Use an obd2 to Get Better Car Performance?


The onboard electronic diagnostic system in your vehicle is used to locate problems as they arise. When the car's engine light comes on, you can use an obd2 scanner to help find the problem and fix it accordingly. However, you can also use the obd2 to enhance your vehicle's performance with a good diagnostic tool and relevant, updated software.

1. Use a monitor with the most diagnostic scanning possible to check out the most systems in your vehicle.

2. Find engine knocks, and make sure your ABS brake system is operating correctly. The service codes on the obd2 scanner can tell you how well use are consuming fuel and how individual cylinders are firing. You can fine-tune your transmission shift points with the obd2, as well as check the voltage coming out of the ignition.

3. Utilize an obd2 scanner when adding enhancements such as pipes and fuel burners to ensure that you remain within current EPA standards. If you are busted with high emissions, you can receive a hefty fine or lose your license to work on cars.

4. Watch for new power loaders that are coming on the market, which allow you to adjust the parameters in your obd2 system for greater speed and extra power. Since the obd2 is sealed in a case, special equipment is required to change the software parameters. Auto manufacturers and after- market providers are constantly working on these upgrades, while trying to maintain responsible emissions standards.

5. Drive your car with the obd reader scanner attached. Use a recording option to save the data collected during the test drive. You can then later go back and look at the results to fine tune your car according to your specifications.

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