If you fail to set up an OBD2 Scan Tool before it’s use (doesn’t apply to simple code readers) – you’ll may miss out on some valuable scan tool functions.
These include enabling the power off time to be modified, turning the printer head off (if included), and allowing scans to be retained within the internal memory.
It is also helpful when it comes to online upgrades and information regarding new vehicles.
All OBD2 Scan tools have connectors that will plug into your cars DLC (Data Link Connector) port.
The connector has 16 pins or connection points that are usually color coded and match specific parts within your vehicle.
They are generally located under you dash board on the drivers side.
Make sure the DLC is properly connected to the various points, this is important.
The 16 pins of a Data Connector are: (for geeks only!)
- 1. Manufacturer reserved pin
- 2. The J1850
- 3. Manufacturer reserved pin
- 4. The chassis ground connector
- 5. The signal ground
- 6. The CAN high, J-2284
- 7. The k line, ISO9141-2/DIS 14230-4connector port
- 8. Manufacturer reserved pin
- 9. Manufacturer reserved pin
- 10. J1850 Bus
- 11. Manufacturer reserved port
- 12. Manufacturer reserved port
- 13. Manufacturer reserved port
- 14. CAN, J2284 PORT
- 15. The L line, ISO 9141 and ISO/ DIS 14230-4
- 16. The battery power connection
Most OBD2 readers use standalone power but occasionally will need the use of the engines power (from the car’s OBD port).
Common question is: will it drain car battery if left unplugged? Answer is NO. Because most cars no longer send full power to OBD port when ignition is off.
Finally, the display is where you will retrieve your codes from that alert you problems within the vehicle. After you have familiarized yourself with the devise plug it in and run a couple tests to ensure it is working correctly.