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X-431 PRO3 V4.0 User Manual
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Follow the steps mentioned below to connect OBD II vehicle:
1. Locate vehicle’s DLC socket.
2. Plug the VCI device into the vehicle’s DLC socket (It is suggested to use the
OBD II extension cable to connect the VCI device and DLC socket).
3. Choose one of the two ways to obtain power from:
A. Power adaptor: Connect one end of the included power adaptor to
charging port of the tablet, and the other end to AC outlet.
B. Internal battery pack
For non-OBDII vehicle, proceed as follows:
1. Locate vehicle’s DLC socket.
2. Select the corresponding non-16pin connector.
3. Plug the non-16pin end of the connector into the DLC socket, then connect
the other end to the OBD I adaptor, and then tighten the captive screws.
4. Connect the other end of the adaptor to the included VCI device.
5. If the pin of the DLC is damaged or has insufficient power, please follow the
either of the following methods to proceed:
A. Cigarette Lighter cable (optional): Connect one end of the cigarette lighter
cable to vehicle’s cigarette lighter receptacle, and the other end to the power
jack of OBD I adaptor.
B. Battery Clamps Cable: Connect one end of the battery clamps cable to
vehicle’s battery, and the other end to the power jack of OBD I adaptor.