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General Motors Tech2 User Guide
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1. Ensure the connection of the DLC (VCI) loopback adapter (Part Number 3000109) to
the VCI module of the Tech2.
2. Navigate to the self test option: At the Tech2 Main Menu, select F3: Tool Options, and
then choose Self Test.
3. Select the test F2: Automated VCI. Screen 1 (shown below) should appear if the test
passes. (Note: If failures are noticed on the CCD test and the HBCC test, these will not
affect diagnostics on GM vehicles.)
4. Select F4: Selectable VCI and press the More Test soft key. Choose F1: VCI Dual
Uart. Screen 2 appears if the test passes.
5. Select F5: VCI J1708, and Screen 3 will display.
6. Select F6: VCI TPU, and Screen 4 will display.
NOTE:
When performing the TPU test, it is critical that TPU12 and TPU15 indicate “Pass.”
If these two TPU channels indicate “Fail,” or if they are not present in the above list, then
the VCI module for the Tech2 is possibly damaged.
7. Insert the DLC Burndy cable into the Tech2/VCI and the DLC loopback adapter at the
end of the cable and repeat the tests listed above. (Note: When running the VCI TPU
test, TPU12 and TPU15 must show up as pass. If they indicate, “fail,” or if they are not
present on the screen, then the cable might be damaged. This is assuming that TPU12
and TPU15 passed with the VCI loopback adapter connected directly into the VCI.
Also, when performing the VCI TPU test, TPU13 and TPU14 will not appear on the
screen when running this test with the DLC Burndy cable inserted into the Tech2/VCI
and the loopback adapter at the end of the cable.)
CANdi Module Software Updates
IMPORTANT:
You must update the PCMCIA (32-megabyte) card first before connecting
the CANdi module to the Tech2. Always disconnect the CANdi module from the Tech2
before downloading any software updates to the PCMCIA card.
The CANdi module has the capability to store three different software versions.
Software updates for the CANdi module are stored on the 32-megabyte PCMCIA card. The
CANdi module will be automatically updated when it is connected to the vehicle’s DLC and
the Tech2 is powered on. When a CANdi module is updated, a screen will be displayed.
Software update progress will be displayed on the Tech2 screen. If any problems occur
concerning the update, they will be displayed on the Tech2. (Refer to the Troubleshooting.)
After a successful update, the current CANdi software version can be obtained by
selecting:
F9: CANdi Diagnostics - from the Tool Options menu.
F0: POST Results - from the CANdi Diagnostics menu.
The CANdi POST Results screen can also be used to determine if the module had any
problems during the software update or start-up sequence. Customer Support may also
use the information from the CANdi POST Results screen, if you encounter any problems
during an update.
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 ...