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X-431 PRO Series User Manual
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1.3.2 X-431 PRO V3.0 VCI Connector (Only applies to 12V cars)
The VCI connector works as a vehicle communication interface device, which is
used to connect to the vehicle
’s DLC (Data Link Connector) socket directly or via
OBD II extension cable to read the vehicle data and then send it to the tablet via
Bluetooth.
Fig. 1-2 VCI connector
1
OBD-16 diagnostic
connector
To connect on vehicle’s OBD II DLC.
2
Power indicator
It lights up while the connector is plugged into
the vehicle’s DLC.
3
Bluetooth/USB
communication
indicator
It indicates Bluetooth mode if the connector is
energized and illuminates blue (default mode).
It illuminates red when the connector is
connected to the diagnostic tool via USB cable
(
The USB port is temporarily disabled
).
4
ECU communication
indicator
It flashes when the connector is communicating
with the vehicle.
