ELM327 OBD2 Bluetooth interface

ELM327 OBD2 Bluetooth interface

As cars become more sophisticated, you`re now able to access all sorts of data from your car and display this on a computer or tablet to diagnose problems or simply to create your own high-end dashboard

You can accomplish this by purchasing one of the many Bluetooth diagnostic scanner tools that are compatible with OBD2 standard (On-Board Diagnostic II), which you could can just connect on an OBD2 connector if your car is recent enough.(as early as 1996 )

Wikipedia OBD2 page explains the OBD2 connector (16-pins) should be within 2 feet (0.61 m) of the steering wheel according to the standard, which also specifies the type of diagnostic connector and its pinout, the electrical signaling protocols available, and the messaging format. After you connect the Bluetooth adapter, you just need to download and install a application platform.Best supported are applications like Torque Pro or Torque Lite for your Android device.

You can find an abundance of applications in the Google Play store that support this device.

For Nokia devices we recommend obdautodoctor please check that your phone is listed under the compatible devices.

IPhone, Ipad and IPod Touch has a limitation on the IOS Bluetooth stack and we do not recommend the Bluetooth version of this device

We are not aware of any Blackberry OBDII software that connects to ELM327 via Bluetooth.

Let`s go to ELM327 and its key features:

Function

• Read diagnostic trouble codes, both generic and manufacturer-specific
• Clear trouble codes and turn off the MIL ("Check Engine" light)
• Display current sensor data
• Engine RPM
• Calculated Load Value
• Coolant Temperature
• Fuel System Status
• Vehicle Speed
• Short Term Fuel Trim
• Long Term Fuel Trim
• Intake Manifold Pressure
• Timing Advance
• Intake Air Temperature
• Air Flow Rate
• Absolute Throttle Position
• Oxygen sensor voltages/associated short term fuel trims
• Fuel System status
• Fuel Pressure

Wireless - Bluetooth with a transmission range up to 10 m

Interface - 16-pin OBD2

Protocols Supported

• SAE J1850 PWM (41.6 kbaud)
• SAE J1850 VPW (10.4 kbaud)
• ISO 9141-2 (5 baud init, 10.4 kbaud)
• ISO 14230-4 KWP (5 baud init, 10.4 kbaud)
• ISO 14230-4 KWP (fast init, 10.4 kbaud)
• ISO 15765-4 CAN (11 bit ID, 500 kbaud)
• ISO 15765-4 CAN (29 bit ID, 500 kbaud)
• ISO 15765-4 CAN (11 bit ID, 250 kbaud)
• ISO 15765-4 CAN (29 bit ID, 250 kbaud)

Output Protocol - OBD2 @ 115.2Kbps

Power - 12 V / 35 mA working current

The device can report the engine and vehicle speed, load values, the temperature of the cooling liquid, the fuel system status, short-term fuel adjustment, long-term fuel trim, the air flow rate, oxygen sensor voltages, fuel pressure and more. Since it follows OBD2 standard I would think it`s compatible with Torque Pro/Lite, but could not find specific demo videos for this particular device.

before you buy check the following:

The following table explains how to determine the protocol and if your vehicle will be compatible:

*Pin 15 (also called the "L-line") is optional in newer vehicles that use the ISO9141-2 or ISO14230-4 protocols.

In addition to pins 2, 7, 10, and 15, the connector should have pins 4 (Chassis Ground), 5 (Signal Ground), and 16 (Battery Positive). This means that:

For more info visit the WIKI pages:

http://en.wikipedia.org/wiki/ELM327

http://en.wikipedia.org/wiki/On-board_diagnostics