Original Opel/Vauxhall/GM CANdi diagnosis module
Opel 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 serves as an enhancement to the Tech 2 and completes the interface necessary to communicate with future on-board computer systems.
Module operationThe CANdi is an in-line cable module that works with existing Tech 2 components including the VCI, cables and adapters. Installed, the CANdi module is fully compatible with current and past Tech 2 software. The module powers up in a way that makes it transparent to the user. This allows the existing Tech 2 software to be used with no changes when the CANdi module is installed. If a vehicle requires the use of a CANdi module, the Tech 2 will enable features specific to the module. The primary function of the CANdi module is to add CAN (controller area network) capability to the Tech 2. The following list summarizes the basic characteristics of the CANdi module:
- Supports simultaneous communications on three CAN buses
- Provides high-speed UART communications with the Tech 2
Connecting CANdi and Tech-IIThe CANdi module connects to the Tech 2 by the existing Burndy data link connector (DLC). The vehicle side connection remains unchanged using the existing adapter to interface between the DLC cable and the SAE J-1962 adapter.
Please note that this page is about original diagnostic tool provided by vehicle manufacturer. The tool can be usually bought only by authorised dealer. We do NOT sell this equipment. The page is intended only for educational purposes.
We provide our own third-party scantools for automotive diagnostics, both for after-market repair and as an alternative for original delaer tools. Please use navigation bars at the top of this page or left navigation menu to select appropriate diagnostic software.