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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 Diagnostic
Platform to the test vehicle through the VCI device and test adapters (for
non-OBD II vehicles). To establish proper vehicle communication to the
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 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 Mini 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.
OBD II Vehicle Connection
This type of connection only requires the VCI device without any additional
adapter.
