An OBD2 System is designed to keep an eye on a car's performance and alert the driver of the potential and current problems, so at present nearly all the cars are required to install this system. However, an OBD2 system can only spot the trouble codes of a car, to modify these codes, you need an OBD2 Reader. The first thing you should do is connect the reader with your car.
To connect it with the car, you may need a cable, or a PC with OBD2 software. Pay attention to use the proper OBD2 reader according to different car models and remember turn off your engine while connecting for the sake of safety. OBD2 reader is available as personal handheld readers or professional readers for auto technicians.
Step 1: Make sure whether your car is in line with OBD2 system.
Cars compliant with OBD2 will have a female 16-pin connector on the driver's side near the center console.
Step 2: Locate the 16-pin connector.
For different car models, the connector's location varies, too. It may be under the steering wheel, the driver's foot well, the area between the driver and passenger seat, behind the ash tray, under the passenger seat, or over the passenger door.
Step 3: Check the connector for available pins.
The most essential pins are pin 4 and pin 5 for grounding and pin 16 for power supply from the buttery.
Step 4: Connect your OBD2 code reader.
Plug the end of the cables with the 16-pin connector to the female 16-pin port, and then connect the other end of the cable to the OBD2 reader.
If you don't like to buy a OBD2 code reader, you can use your PC instead, by simply connecting your PC with the car by a USB or Bluetooth connector. But the OBD2 software is indispensable.
Step 5: Wait for the reader to initialize.
Automatically, the reader will check your car's computer to find out what protocol to use and then connect.
Step 6: Check your service manual for an interpretation of the code.
When choosing an OBD2 code reader, take its practical usage into consideration. You should note that not all the OBD2 code readers have the same function. Actually they specialize in different function area.
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