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X-431 V+ User Manual — Vehicle Diagnosis

vehicle’s on-board computer. The DLC is usually located 12 inches from the

center of the instrument panel (dash), under or around the driver’s side for most

vehicles. If Data Link Connector is not located under dashboard, a label should

be there telling location. For some Asian and European vehicles, the DLC is

located behind the ashtray and the ashtray must be removed to access the

connector.

Fig. 4-9

For commercial vehicles:

The DLC is located in the driver’s cab.

If the DLC cannot be found, refer to the vehicle’s service manual for the location.

4.3.3 Vehicle connection (For Passenger Vehicle Version)

The method used to connect the diagnostic connector to a vehicle’s DLC

depends on the vehicle’s configuration as follows:

 A vehicle equipped with an OBD II management system supplies both

communication and 12V power through a standardized DLC.

 A vehicle not equipped with an OBD II management system supplies

communication through a DLC connection, and in some cases supplies 12V

power through the cigarette lighter receptacle or a connection to the vehicle

battery.

Follow the steps mentioned below to connect OBD II vehicle:

1. Locate vehicle’s DLC socket.

2. Plug the VCI connector into the vehicle’s DLC socket (It is suggested to use

the OBD II extension cable to connect the VCI connector and DLC socket.).

3. Choose one of the two ways to obtain power from: