User Manual

20
Chapter 4 Diagnostics Operations
By establishing a data link to the electronic control systems of the vehicle being
serviced through the VCI device, the Diagnostics application allows you to retrieve
diagnostic information, view live data parameters, and perform active tests. The
Diagnostics application can access the electronic control module (ECM) for various
vehicle control systems, such as engine, transmission, antilock brake system (ABS),
airbag system (SRS) and more.
4.1 Establishing Vehicle Communication
The Diagnostics operations require connecting the MaxiSys/MaxiSys Pro
Diagnostic Platform to the test vehicle through the VCI device using the main
cable, and test adapters (for non-OBD II vehicles). To establish proper vehicle
communication to the MaxiSys display tablet, you need to perform the
following steps:
1. Connect the VCI device to the vehicle’s DLC for both communication and
power source.
2. Connect the VCI device to the MaxiSys display tablet via BT pairing, or
USB connection.
3. When these are done, check the VCI navigation button at the bottom bar
on the screen, if the button displays a green tick icon at the lower right
corner, the MaxiSys/MaxiSys Pro diagnostic platform is ready to start
vehicle diagnosis.
4.1.1 Vehicle Connection
The method used to connect the VCI 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.