Users Manual Part 1

4 Diagnostics

The Diagnostics application can access the electronic control module of multiple

vehicle control systems, including but not limited to the engine, transmission, antilock

brake system (ABS) and airbag system (SRS).

4.1 Establish Vehicle Communication and Selection

4.1.1 Establish Vehicle Communication

The Diagnostics operations require connecting the MaxiSys Ultra Diagnostic tablet to

the test vehicle through the VCMI device using the Main Cable. (Use the applicable

OBD I-type adapter if needed). To establish proper vehicle communication to the tablet,

you need to perform the following steps:

1. Connect the VCMI device to the vehicle’s DLC for both communication and power

source.

2. Connect the VCMI device to the tablet via BT pairing, Wi-Fi or USB connection.

3. When the above steps are completed, check the VCMI navigation button at the

bottom bar on the screen, if a green BT, Wi-Fi or USB icon displays at the lower

right corner, the MaxiSys Ultra Diagnostic Platform is ready to start vehicle

diagnosis.

4.1.1.1 Vehicle Connection

The method used to connect the VCMI device to a vehicle’s DLC depends on the

vehicle’s configuration as follows:

 A vehicle equipped with an On-board Diagnostics Two (OBD II) management

system supplies both communication and 12-volt power through a standardized

J-1962 DLC.

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

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

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

battery.

OBD II Vehicle Connection

This type of connection only requires the main cable without any additional adapter.

 To connect to an OBD II vehicle

1. Connect the main cable’s female adapter to the Vehicle Data Connector on the