User's 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 Vehicle Connection
The Diagnostics operations require connecting the MaxiSys
TM
Diagnostic
Platform to the test vehicle using the main cable, and test adapters (for
non-OBD II vehicles). 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 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.
2. Connect the cable’s 16-pin male adapter to the vehicle’s DLC, which
is generally located under the vehicle dash.
NOTE: The vehicle’s DLC is not always located under the dash; refer to the
user manual of the test vehicle for additional connection information.
Non-OBD II Vehicle Connection
This type of connection requires both the main cable and a required OBD I
adapter for the specific vehicle being serviced.