General Motors Tech2 User Guide
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Illustration of CANdi module showing wiring
Basic Operation
The CANdi is an in-line cable module that works with existing Tech2 components including
the VCI, cables and adapters. Installed, the CANdi module is fully compatible with current
and past Tech2 software. The module powers up in a way that makes it transparent to the
user. This allows the existing Tech2 software to be used with no changes when the CANdi
module is installed. If a vehicle requires the use of a CANdi module, the Tech2 will enable
features specific to the module.
The primary function of the CANdi module is to add CAN (controller area network)
capability to the Tech2. 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 Tech2
The Tech2 controls CANdi module operation. When installed, the CANdi module does not
interfere with any diagnostic procedure currently performed by the Tech2. Use of the
module does not require any physical changes to the Tech2, cables, or adapters. The
module operates transparently until activated by the Tech2. Upon activation, the CANdi
module operates under control of the Tech2. Tech2 application software loaded on the
Tech2 PCMCIA card determines all functionality.
IMPORTANT:
When functioning properly the CANdi’s LED will flash. If a problem occurs,
the LED will be constantly illuminated. If the module’s light is constantly illuminated, refer to
the troubleshooting section in this manual.
Summary of Contents for Tech2
Page 1: ...General Motors Tech2 User Guide 1 GM Tech2 User Guide ...
Page 20: ...General Motors Tech2 User Guide 20 Connection of the power jack to the DLC cable ...
Page 22: ...General Motors Tech2 User Guide 22 ...
Page 24: ...General Motors Tech2 User Guide 24 PCMCIA card keying ...
Page 26: ...General Motors Tech2 User Guide 26 VCI module removal ...
Page 32: ...General Motors Tech2 User Guide 32 Attaching the Tech2 to non OBD II equipped vehicles ...
Page 40: ...General Motors Tech2 User Guide 40 RS 232 cable connections ...
Page 46: ...General Motors Tech2 User Guide 46 Tech2 startup screen ...
Page 47: ...General Motors Tech2 User Guide 47 Tools Options selected on Main Menu ...
Page 52: ...General Motors Tech2 User Guide 52 Test Status ...
Page 53: ...General Motors Tech2 User Guide 53 Test Pass ...
Page 64: ...General Motors Tech2 User Guide 64 Selectable VCI test selected on Tech2 Self Test main menu ...
Page 65: ...General Motors Tech2 User Guide 65 First selectable VCI Self Test screen ...
Page 78: ...General Motors Tech2 User Guide 78 CANdi Diagnostics selected on Tool Options menu ...
Page 86: ...General Motors Tech2 User Guide 86 System Selection Menu ...
Page 97: ...General Motors Tech2 User Guide 97 Tool Controls Menu ...
Page 98: ...General Motors Tech2 User Guide 98 Hardware Menu ...
Page 101: ...General Motors Tech2 User Guide 101 Accept soft key on data screen ...
Page 103: ...General Motors Tech2 User Guide 103 Live Plot Screen with selectable items ...
Page 104: ...General Motors Tech2 User Guide 104 Min Max Adjustment screen ...
Page 106: ...General Motors Tech2 User Guide 106 Live Plot Resume soft key ...
Page 107: ...General Motors Tech2 User Guide 107 Live Plot Data List soft key ...
Page 136: ...General Motors Tech2 User Guide 136 Programming Failed Screen ...
Page 141: ...General Motors Tech2 User Guide 141 Controller Area Network diagnostic interface CANdi module ...