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Snapshot, Upload/Display

Snapshot, Upload/Display

Using snapshots for troubleshooting and diagnostics

Snapshots show what has happened in the control unit and are used to analyse fault sources during troubleshooting and diagnostics.


Starting the application

1.
Start the application by clicking on the icon in the program window or selecting the Applications menu and clicking Snapshot, Upload/Display .

2.
Choose between uploading a snapshot from TECH2 or opening a saved snapshot. This can be done either by clicking on the buttons on the screen or by using the Snapshot menu.



Uploading snapshots from TECH2

1.
Mark TECH2 in the box. Follow the instructions on the screen and TECH2. Click OK .

2.
Select the snapshot you wish to upload. Click OK .

3.
The selected snapshot is uploaded to the computer. The status is indicated on the screen.



Opening a saved snapshot

1.
Mark the desired snapshot and from which media it is to be opened. Click OK .


Toolbar

A toolbar above the snapshot window has a number of shortcut buttons for various functions. They can also be activated via the menu bar. The functions of the buttons are described below.



1. Retrieves a snapshot from TECH2.

2. Retrieves an existing snapshot file.

3. Saves a snapshot file on the computer.

4. Displays snapshot information in a column on the screen.

5. Shows snapshot information in two columns on the screen.

6. Toggles between showing temperature parameter values in Fahrenheit or Celsius.

7. Shows DTCs included in a snapshot.

8. Use to show parameters in diagram form.

9. Use to lock or unlock parameters, i.e. select parameters to your own list or remove them from the list.

10.

11.

12.


Displaying snapshots

One snapshot consists of several shots (frames) after each other. When played, you can see the change in a parameter value and how it affects other parameter values. The buttons used to play the frames of a snapshot series are shown here and their functions are described below. These functions can also be activated via the Playback menu.



1. First frame: Go back to the first frame in a snapshot series. This applies regardless of where you are.

2. Back one frame: Scrolls back one frame at a time.

3. Play in reverse: Plays the snapshot series in reverse. Stops when it reaches the first frame. Only works if you are farther along in the series.

4. Reference frame, trigger point: Moves to the exact frame where a snapshot was triggered, e.g. when a DTC is set by the control unit. Only works if you are elsewhere in the series.

5. Play forward: Plays a snapshot series forward. Stops when it reaches the last frame. Only works if you are farther along in the series.

6. Forward one frame: Scrolls forward one frame at a time.

7. Last frame: Goes to the last frame in a snapshot series. This applies regardless of where you are.

8. Stop: Stops forward or reverse play of a snapshot series.



Analysing snapshots

1.

Snapshot information is now displayed on the screen. The parameters can be displayed in either one or two columns via the Options menu or the toolbar buttons.

2.
Relevant diagnostic trouble codes (DTCs) are shown by selecting Options and Diagnostic Trouble Codes .

3.
By double-clicking on individual parameters in the table, you can move them up to the top frame to provide a better overview. First click on the padlock symbol in the toolbar or select the Options menu and click Lock/Unlock Parameters .



Graphing parameter values

1. Click on button 8 in the toolbar or select the Options menu and click Display Graph .

2.
Create graphs of the parameter values by clicking on a graph button and then on the desired parameter in the list. Enter a minimum and maximum Y-axis value. Select black or white as the background colour. Click OK .



Saving a snapshot

1.
To save a snapshot: Click on button 3 in the toolbar or select the File menu. Choose whether to save to the hard drive or disk and click OK .