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Car OBDII WLAN Protocol

I'm currently looking for a WLAN protocol specification for OBDII data. There is a similar ELM327 adapter on the market that allows the iPhone to connect to the OBDII interface with WLAN. This is because the Bluetooth serial port is scrambled due to the accessory interface. Other programs, such as Torque for android, can also use this communication protocol. However, I did not find the specification for creating a network client.

Any help is appreciated

thank

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Well, after several studies, I found two sources:

  • Michael Gile iOS, OBDII WiFi, Bluetooth.
  • PLX ( KiWi) , KiWi. , , :
    • WiFi ()
    • , >

, ( ASCII):

MM PP\r

MM - , PP - PID, \r - (hex: 0x0d). . * 03 04 PID.

" ", , , SAE J1979:

Test mode   Description
01  Show current data
02  Show freeze frame data
03  Show diagnostic trouble codes
04  Clear trouble codes and stored values
05  Test results, oxygen sensors
06  Test results, non-continuously monitored
07  Show 'pending' trouble codes
08  Special control mode
09  Request vehicle information
0A  Request permanent trouble codes

- . A ( ) PID .

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