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General Motors Tech2 User Guide
116
Three-Graph Display
To access the three-graph display mode:
1. Click the Display Graph (three) icon.
2. Click on the first graph icon at the top of the Graph Parameters window, then select a
parameter from the list in the lower portion of the box. The parameter name will appear
next to the first graph icon.
3. Repeat this procedure for the second and third graphs.
IMPORTANT:
When selecting parameters to be graphed, it is important to consider the
values used to measure the parameter, and to correctly plot these on the graphs. This is
done
in the “Min Y Axis Value” and “Max Y Axis Value” fields. These may need to be
adjusted to reflect the normal range of values for the parameter
— for example, 0 to 5 volts
for MAP sensor.
4. When one to three desired parameters have been selected, click OK.
5. The screen changes to display the chosen parameters in graph form.
• Using the navigation icons, move through the parameters.
• Click and drag on the arrow along the bottom of each graph to move through the
graph. This arrow represents the current frame being viewed. It is useful for
pinpointing precisely when a parameter change indicates a fault.
• A data value corresponding to the frame the arrow is pointing to will be displayed in
the upper left corner of each graph.
6. To select a different parameter to be graphed, simply click and hold on the parameter
name in the data list, then drag the cursor over one of the existing graphs and release
the mouse button. The new parameter will be graphed in place of the old one.
7. To view a graph at full-screen size, move the cursor over the graph. When the cursor
changes to a magnifying glass, click on the graph. The graph will appear at full-screen
size. Click on the full-size graph to return to the three-graph display.
Six-Graph Display
Up to six parameters can be displayed on a single graph. Parameters are selected in the
same manner as described for three-graph display. Each parameter is color-coded, and
you can change the background color to improve visibility.
Lock / Unlock Parameters
The Lock/Unlock Parameters function is used to isolate specific parameters so they can be
viewed and compared more easily than if they were part of the larger parameters list. To
use this function:
1. Select (highlight) the desired parameter, then click the Lock/Unlock Parameters icon.
The selected parameter will appear at the top of the data list, above
a “lock line”.
2.
To add other parameters, follow the same procedure. The “locked” parameters can
then be viewed together to compare their data values. Parameters can also be locked
by double-clicking on them in the data list.
3. To remove an item from the locked list, select it, then click the Lock/Unlock Parameters
icon. The item will be removed from the list.
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 ...