Diagnostics; Establish Vehicle Communication And Selection; Establish Vehicle Communication - Autel MaxiSys MS908CV II Manual

4

Diagnostics

By establishing a data link to the electronic control systems of the vehicle being
serviced through the VCI (MaxiFlash Elite) 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).

4.1 Establish Vehicle Communication and Selection

4.1.1 Establish Vehicle Communication

The Diagnostics operations require connecting the MaxiSys MS908CV II tablet to the
test vehicle through the VCI device using the main cable. (Use the applicable OBDI-type
adapter if needed.) To establish a proper vehicle communication to the tablet, you need
to perform the following steps:
Connect the VCI device to the vehicle's DLC for both communication and power
1.
source.
Connect the VCI device to the tablet via Bluetooth pairing or USB connection.
2.
When the above steps are completed, check the VCI navigation button at the bottom
3.
bar on the screen. If a green BT or USB icon displays at the lower-right corner, the
MaxiSys MS908CV II tablet is ready to start vehicle diagnosis.
4.1.1.1 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 (OBDII) management system
⚫
supplies both communication and 12-volt power through a standardized J-1962 DLC.
A vehicle not equipped with an OBDII 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.
17