Bosch Tech 2 User Manual

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•F3: Automatic Trigger (chassis applications only) automatically triggers a snapshot. 
Trigger Point (F4-F6 function keys) is the exact point at which the trouble code (fault) or manual 
trigger occurs within the snapshot period. It helps to know the trigger point when you are looking for 
changes in data parameters. Trigger point may be set for: 
•F4: Beginning causes the Tech 2 to start recording information from the trigger point until snapshot 
storage is full. This choice...

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FIGURE 8-38. Snapshot Upload Screen Showing Two Choices
FIGURE 8-39. Upload from a Handheld Device Screen 

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FIGURE 8-40. Snapshot Display Showing Two-Column Mode
UploadOpenSingleTw oDiagnosticLock/SaveDisplayfrom
Handheld an
Existing Snapshot Column
Mode Column
Mode Trouble
Codes Graph Unlock
Parameters 
FirstReversePlay inTriggerPlayForwardLast Stop
Play  Frame One
Frame Forward Frame Reverse One
Frame Frame 
REPLAY SELECTIONS 

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VIEWING THE SNAPSHOT 
After a snapshot has been uploaded (either from disk or the scan tool), it can be viewed and analyzed in a 
variety of ways. Figure 8-42 identifies the different display icons and replay selections. 
REPLAYING THE SNAPSHOT 
To replay a snapshot, use the icons displayed as a row of selections in the lower left-hand portion of the 
screen. 
The selections and their functions are as follows (refer to Figure 8-42): 
• First Frame displays the first frame of...

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DISPLAYING DIAGNOSTIC TROUBLE CODES 
The Diagnostic Trouble Code icon displays all relevant trouble code information for each individual frame 
of a snapshot. It is important to note that when replaying a snapshot, every frame of the snapshot may not 
have a stored DTC. 
To use the DTC display feature: 
1. Click on the DTC icon in the toolbar. 
A box appears near the top of the screen listing DTC information (Figure 8-44). The following 
information is provided: 
• The first...

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• The number and name of the DTC. 
• “Diagnostic Test Status” states whether the test ran and whether it passed or failed. 
• “DTC Status” lists the DTC information. This is the status of the tests that were run and the related 
DTC messages that can be viewed by the technician. This information is based only on the DTC 
information listed, since some DTC information is not be available on all applications. 
2. If more than one DTC is set for a frame, scroll bars appear at the...

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DISPLAYING GRAPHS 
A valuable function of snapshot display is the ability to view up to three data parameters in graph form. This 
allows you to see how a parameter is functioning over time. It also allows easy visual comparison of up to 
three parameters at a single time. 
To access Display Graph mode: 
1. Click on the Display Graph icon (Figure 8-47). 
A Graph Parameters window appears (Figure 8-48). 
2. Click on the first graph icon at the top of the graph parameters...

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7. 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 is graphed in place of the old one. 
8. 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 appears at full-screen size (Figure 8-50).
9. Single click on the full size...

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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 the Lock/Unlock Parameters function: 
1. Click on the desired parameter to highlight it, then click on the Lock/Unlock Parameters icon (Figure 8-
51). 
The selected parameter appears at the top of the data list, above a “lock line” (Figure 8-52). 
2. To add other...

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The item is removed from the list. 
VIEWING CAPTURE INFO DATA 
Capture Info is a feature that allows the Tech 2 to retrieve DTCs, Freeze Frame, and Failure Records from 
the vehicles control module. This is a different function than snapshot display. Capture Info files consist of 
only one frame of data, whereas snapshots typically contain multiple frames of data. 
When Capture Info is selected, the scan tool displays a menu selection that allows data from the control 
module...