If you suspect an ECM connectivity problem, you can check the following to see if engine data is being reported:


  1. Driver Performance Summary (Website)

    If a vehicle has lost its connection to the ECM entirely, this report will not populate for drivers. The data it uses comes solely from that connection.

  2. Hours of Service Summary (Website)

    A driver’s daily log book includes entries for “ELD Events”. These are events that trigger for proper use of an ELD device and include entries for when the engine is turned on, turned off, or connectivity is lost to the ELD. If you see a lack of “Engine on”, “Engine off” or an abundance of the same events (usually 10 or more pairs per day) this could indicate a complete lack of connection or be symptomatic of an intermittent connection.

    Long periods of time without a connection where data may be missing will also write “Diagnostic Started” or “Malfunction Started” events to this ELD Events section.

  3. Tablet Dashboard Screen (Tablet)

    When not properly connected, the driver's "Dashboard" screen may show N/A or 0 for speed at all times. This is a clear indicator that we're not getting all required data from the vehicle.




Collection of ECM data is a required part of being a certified ELD. If you're concerned that one or more of your vehicles is not collecting this data then please refer to our ECM Connection Troubleshooting Guide.