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4
Diagnostics
The Diagnostics application can access the electronic control module (ECM) of various
vehicle control systems, such as engine, transmission, antilock brake system (ABS),
airbag system (SRS) and more.
Establish Vehicle Communication
The Diagnostics operations require connecting the MaxiSys MS908S/MaxiSys MS908S
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 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 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 a green check displays at the lower right corner, the MaxiSys
MS908S/MaxiSys MS908S Pro Diagnostic Platform is ready to start vehicle
diagnosis.
Vehicle Connection
The method used to connect the VCI device to a vehicl
e’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
VCI device, and tighten the captive screws.
