Before opening up your OBD-II software to interact with the Bluetooth OBD-II adapter, some setup is required. You will need to locate the OBD-II interface connector inside your vehicle that the Bluetooth OBD-II ELM327 will plug into. In most vehicles, it is found in the driver’s side seating area under the dash. In some vehicles, the connector may be hidden behind an access door or even in the passenger’s side seating area.
Note: Some vehicles may require purchasing a special adapter to convert from a proprietary vehicle connector to an OBD-II compliant connector. This may be true for older, pre-2000 BMW’s and possibly Audi’s. Also, some vehicles 1996 and older may have the OBD-II connector, but do not fully comply with the OBD-II spec. To be sure your vehicle complies with OBD-II, look for a sticker on the vehicle under the hood in the engine compartment that clearly states “OBD II compliant or certified”. An example of the sticker is shown below:
Once the connector is located, insert the Bluetooth OBD-II adapter into the OBD-II port. The LEDs on the Bluetooth OBD-II adapter will light up, and then one of the LEDs will start blinking. The blinking LED shows the Bluetooth status. Once the adapter is paired with another Bluetooth device and the connection is opened or used, the blinking LED will then stay lit constantly.
To pair the Bluetooth OBD-II adapter with your device that will access the adapter (called the “master device” from now on), you will need to go into the Bluetooth settings of the master device and search for discoverable Bluetooth devices. This process will vary for every operating system that supports Bluetooth. Once the device search has begun, you will soon see a device named, “STN1110 OBD-II”. This is the device you should select to pair with. Initiate the pairing, and then enter the PIN number of “1234” when asked to enter a PIN. The master device will then be paired with the Bluetooth OBD-II adapter.
In Windows XP, an additional step may be required (depends on third-party Bluetooth adapter software) to get a virtual serial port to be added to the system. You may have to query the Bluetooth OBD-II adapter to see what services it offers, and then connect to the “serial port” provided by the adapter. A similar action may need to be taken on PocketPC (Windows CE or Mobile) devices.
Windows 7 and Android will do all of this automatically. PalmOS and Blackberry devices will probably be automatic as well.
On Windows systems (master device), you will need to find the serial port number (COM port number) that the Bluetooth OBD-II adapter added to the system. On most systems, this will be either the only available COM port or the only COM port number greater than 4 (COM6 for instance). It will not be necessary to determine serial port number or anything of that on other systems.
Note: Some vehicles may require purchasing a special adapter to convert from a proprietary vehicle connector to an OBD-II compliant connector. This may be true for older, pre-2000 BMW’s and possibly Audi’s. Also, some vehicles 1996 and older may have the OBD-II connector, but do not fully comply with the OBD-II spec. To be sure your vehicle complies with OBD-II, look for a sticker on the vehicle under the hood in the engine compartment that clearly states “OBD II compliant or certified”. An example of the sticker is shown below:
Once the connector is located, insert the Bluetooth OBD-II adapter into the OBD-II port. The LEDs on the Bluetooth OBD-II adapter will light up, and then one of the LEDs will start blinking. The blinking LED shows the Bluetooth status. Once the adapter is paired with another Bluetooth device and the connection is opened or used, the blinking LED will then stay lit constantly.
To pair the Bluetooth OBD-II adapter with your device that will access the adapter (called the “master device” from now on), you will need to go into the Bluetooth settings of the master device and search for discoverable Bluetooth devices. This process will vary for every operating system that supports Bluetooth. Once the device search has begun, you will soon see a device named, “STN1110 OBD-II”. This is the device you should select to pair with. Initiate the pairing, and then enter the PIN number of “1234” when asked to enter a PIN. The master device will then be paired with the Bluetooth OBD-II adapter.
In Windows XP, an additional step may be required (depends on third-party Bluetooth adapter software) to get a virtual serial port to be added to the system. You may have to query the Bluetooth OBD-II adapter to see what services it offers, and then connect to the “serial port” provided by the adapter. A similar action may need to be taken on PocketPC (Windows CE or Mobile) devices.
Windows 7 and Android will do all of this automatically. PalmOS and Blackberry devices will probably be automatic as well.
On Windows systems (master device), you will need to find the serial port number (COM port number) that the Bluetooth OBD-II adapter added to the system. On most systems, this will be either the only available COM port or the only COM port number greater than 4 (COM6 for instance). It will not be necessary to determine serial port number or anything of that on other systems.
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