SECTION VIID CANDI MODULE
2005 Tech 2 User’s Guide VII - 67
Figure VIID-1
Controller Area Network diagnostic interface (CANdi) module
CANdi Module
This section applies only to GM vehicles equipped with the new GM LAN/CAN (General Motors
Local Area Network/Controller Area Network). Please disregard this section if your dealership
currently does not have any vehicles supported by this application.
GM vehicles use class 2, low-speed (10.4 K baud rate) systems. A limited number of vehicle platforms
(e.g. Saturn Ion, Cadillac XLR) are equipped with the new GM LAN/CAN system. This type of application
has a single-wire CAN bus for body controls, a medium-speed CAN bus for information and entertainment,
and a high-speed CAN bus for powertrain (OBD II compliant modules). A new diagnostic interface—the
Controller Area Network diagnostic interface (CANdi) has been developed to address these needs. The
CANdi module (Figure VIID-1, Figure VIID-2) serves as an enhancement to the Tech 2 and completes the
interface necessary to communicate with future on-board computer systems.
Figure VIID-2
Illustration of CANdi module showing wiring
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