GMC MDI 2 User Manual page 14

Universal Serial Bus (USB – Item 6)
The MDI 2 has a fixed USB configuration which cannot be changed. This ensures that the MDI
2 can always be connected to a single PC running the MDI Manager software so you can
configure LAN or WLAN settings required by your local network. In addition, it is important to
note that a USB connection is recommended to configure and update the firmware on the MDI
2. USB connection must be made directly with the PC port. Do not connect through a USB hub.
Ethernet
The Ethernet connection on the MDI 2 is set up and configured while the device is connected
over USB to a PC running the MDI Manager software. It is possible to update the firmware on
the MDI 2 using an Ethernet connection.
Wireless Local Area Network (WLAN)
The 802.11n WLAN connection on the MDI 2 is set up and configured while the device is
connected over USB to a PC running the MDI Manager software.
MDI Manager Software
The MDI Manager software is a host computer application which runs on the Microsoft Windows
operating system to configure and update MDI 2s. The MDI Manager software allows the
configuration of MDI 2-to-host PC communications and facilitates MDI 2 firmware updates.
SAE J2534 Pass-Thru Support
The MDI 2 has been validated to work with General Motors PC based diagnostics and
reprogramming applications.
The MDI 2 supports pass-thru programming of the flash calibration files that are stored in a
vehicle onboard controller (e.g., PCM, ABS, VTD). Refer to specific operating instructions
provided by General Motors.
The MDI 2 design is based on the SAE J2534 Pass-Thru and ISO 22900 Modular Vehicle
Interface standards, therefore the MDI 2 may also be compatible with vehicles built by other
OEMs
MDI 2 Features
Data Link Connector Cable
The Data Link Connector Cable is the external test equipment (ETE) cable that connects
the MDI 2 to the vehicle's SAE J1962 Data Link Connector (DLC). The DLC Cable with
the grey SAE 1962 connector is specifically designed for the MDI 2 and measures 1.8
meters in length.
Power Source
The MDI 2 is intended to be powered from the vehicle battery via the DLC Cable for
normal use. If the MDI 2 does not have sufficient power (12V) to perform vehicle
diagnostics, the MDI 2 will inform you of insufficient power for diagnostics by blinking the
Vehicle LED in the color Red. This scenario can be seen when the MDI 2 is only
Multiple Diagnostic Interface 2 User Guide
14