GMC Tech 2 - Figure VI

SECTION VI TROUBLESHOOTING
2005 Tech 2 User’s Guide VI - 8
Figure VI-18
Power On Self Test Results selected on Tech 2 Self Test main menu
F4: Selectable VCI Test
Choose F4: Selectable VCI (Figure VI-15) after a fail message has been displayed during the Automated
Main PCB and VCI or Automated VCI tests. When you choose F4: Selectable VCI, a screen like the one
shown in Figure VI-16 is displayed. You may select individual tests for failed components from this screen.
If you select More Tests, a screen like the one shown in Figure VI-17 is displayed. If you then select
Previous Menu, the screen shown in Figure VI-16 returns. For specific information on failed components,
refer to the Vehicle Communications Interface (VCI) Module Diagnostic Chart (Figure VI-10).
F5: Power On Self Test Results
Choose F5: Power On Self Test Results (Figure VI-18) after a fail message has been displayed during the
Power On Self Test (POST). Specific information on the failure will be displayed on the screen. Select F0,
F1, F2, F3, or F4 to further isolate the specific fault.
Figure VI-15
Selectable VCI test selected on Tech 2 Self Test main menu
Figure VI-16
First selectable VCI Self Test screen
Figure VI-17
Second selectable VCI Self Test screen
RETURN TO MAIN MENU