Vehicle Diagnosis Access Point
WARNING: This page does not describe the selected car, but rather 59 other vehicles, including the 2009 BMW M5, 2009 BMW 650i, 2009 BMW 550i, 2008 BMW M5, and 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.
The diagnosis tool is connected to the vehicle by means of the diagnosis connector OBD (On-Board Diagnosis). The connector is located behind a small cover in the drivers side kick panel trim. There is a black plastic cap that bridges KL-30 to the D-bus when the connector is not being used. This cap must be removed before installing the diagnosis cable.
The TxD lead is located in pin 7 of the OBD socket and is connected directly to the ZGM.
The ZGM detects by means of the data transmission speed whether a BMW diagnosis tool (DISplus, GT-1) or an aftermarket scanner is connected.
The DME allows access to different data depending on the diagnosis tool connected.
NOTE:
When using an OBD scan tool for diagnosis, the transmission speed is 10.4 KBit/s.