< Back to Results

P1000 Training Module 4

Applies To: P1000™

Scanner Data Graphing View: Views, PID Triggers, Cursors, Save, Zoom




This module covers the use of scanner data in graphing view.

Live data parameters are some of the most valuable clues to help track down a vehicle fault. Live data is one form of “back door” information, or data that is output from the vehicle’s electronic control module, or ECM.

A numeric view of Parameter ID, or PID data, will not always reveal problems or show relationships between PIDs. Graphing relationships between data parameters gives you a view of performance over time.

Data graphing can show momentary failures and data trends over time.

The View icon switches the live data viewing mode between a numeric view and a graphing display. From one to four graphs can be displayed on the screen.


The graph provides a large number of data points plotted so you can compare events over time. Multiple graphs allow you to view relationships between components.

Scroll down for more data, using the scroll bar on the right. All data is continuously being recorded for all available parameters for the selected ECM.

Values to the left of each graph show the current, maximum and minimum value of captured data. Minimum and maximum values are stored even after the data has scrolled off the screen.


The PID Trigger is a valuable tool to automatically capture data when a parameter value is outside of normal range.

The Set Trigger command sets upper and lower values to start recording a data movie when the signal crosses the set value. This is similar to an Automotive OBD-II freeze-frame.

Select the PID Trigger Icon. Tap the plus and minus buttons on the toolbar, or use the keypad to position the upper trigger line to the desired level. Tap the checkmark on the toolbar, or press the Yes button to accept the value. 

The lower trigger level line will appear on the graph. Position the line to the desired level. Tap the checkmark on the toolbar to accept the lower trigger value.

The trigger points will appear as horizontal lines across the designated parameter graph. Triggers can be set on up to three parameters at once.

To arm the triggers, tap the PID Trigger button on the toolbar and select Arm Triggers from the dropdown menu. 

The trigger lines on the data graphs change color to indicate an armed condition, and any data point outside of your set conditions will pause data collection and save a recording. Once triggering is armed, it remains on until you clear or disarm.

The Save Icon saves the current screen information, along with all data stored in the buffer. Simply tap the Save icon. Then select the Previous Vehicles & Data icon on the home screen and select View Saved Data to review the movie.


Select Previous Vehicles and Data then View Saved Data. Select the movie file you wish to review. Change to Graph View. Use the arrow buttons to scroll forward or back through the collected data.

Scroll down to view more data parameters. Parameters may be magnified for easier viewing by selecting the Zoom Icon.


The Zoom icon incrementally increases and decreases the scale of the data being displayed.

Tap the zoom icon and select a plus level to zoom in for more detail. Tap the zoom icon and select a minus level to zoom out for less detail.


Last Updated: July 22, 2020

Snap-on Diagnostic Tools and

Repair Information

Snap-on is a trademark of Snap-on Incorporated.

All other marks are marks of their respective holders.

©2020 Snap-on Incorporated. All Rights Reserved.

Got Questions?

Request Product Information

Online Product Help Here

Contact Diagnostic Customer Care

Send e-mail

(800) 424-7226

Mon - Fri 6am - 5pm PST


Product Registration:

• US     • Canada

We welcome your feedback on our website.


Enter your name:



Please rate your experience in the following:
(1 being an unpleasant experience and 10 being exceptional)


 1  2  3  4  5  6  7  8  9  10


 1  2  3  4  5  6  7  8  9  10


Suggested improvements:

Can we contact you by e-mail to discuss your feedack further?


If you would like to receive e-mails from Snap-on about product releases, developments and promotions, please click the box below.