JPRO Professional FAQs

1. What does JPRO do?

JPRO empowers diesel technicians to diagnose and repair all makes, models, and components. JPRO reduces a technician’s dependency on OEM software by offering industry-leading bi-directional controls, including DPF regens, cylinder cutouts, parameter changes, and much more. For detailed information and full coverage details, visit the JPRO Professional page.

2. What trucks will JPRO work on?

For commercial vehicles, JPRO is an all makes, models, and components solution. For detailed information, check out our coverage chart.

3. If I buy JPRO, do I need anything else?

JPRO Software requires a compatible Windows based PC, Laptop or Tablet, RP1210C compliant adapter and the appropriate cable that connects the computer to the vehicle’s OBD-II, 9-Pin or 6-Pin port.

If you do not already own the items listed above we recommend purchasing JPRO as part of an adapter or diagnostic service kit.

4. Can JPRO Commercial Vehicle Diagnostics perform bi-directional vehicle tests such as Cylinder Cut Out tests?

Yes. JPRO comes loaded with industry-leading bi-directional tests for the makes and models you commonly repair. For a full list of included tests, visit our coverage chart.

5. Can JPRO Commercial Vehicle Diagnostics adjust user-configurable parameters such as road speeds or idle shutdown settings?

Yes. On certain vehicles, users can adjust max cruise speed, max road speed, idle shutdown times, and enable/disable cruise control. Visit our coverage chart to see which vehicles currently allow parameter changes.

6.our coverage chart to see which vehicles currently allow parameter changes.

Yes. On certain vehicles, users can adjust max cruise speed, max road speed, idle shutdown times, and enable/disable cruise control.

7. What OEM applications come with JPRO Commercial Vehicle Diagnostics?

Although installed OEM applications can be launched directly from JPRO, OEM applications are not included with your purchase. JPRO is intended to alleviate the need to use many different OEM applications by providing coverage for all makes, models, and components.

8. Can JPRO Commercial Vehicle Diagnostics clear fault codes?

Yes. Users have the ability to clear inactive fault codes.

9. Can JPRO Commercial Vehicle Diagnostics perform ECU programming?

No, JPRO is a standalone solution that does not require any third party applications. If needed, installed OEM applications can be launched directly from JPRO.

Due to security and safety concerns, JPRO does not allow users to reprogram ECUs.

10. Do I need OEM software in order for JPRO Commercial Vehicle Diagnostics to work?

No, JPRO is a standalone solution that does not require any third party applications. If needed, installed OEM applications can be launched directly from JPRO.

11. If I have OEM software, why do I need JPRO Commercial Vehicle Diagnostics?

Diagnosing on a component-by-component basis is time consuming in an industry where time is extremely valuable. JPRO covers all components on the vehicle to provide users with a holistic view of the vehicle to improve total vehicle health. Heavy Duty Diagnostic JPRO automatically detects all components on the vehicle, down to the serial number, so you don’t even have to choose which application is needed to diagnose the vehicle you are diagnosing and repairing. If you do need additional information from your OEM applications, JPRO will launch the application and/or its associated troubleshooting manuals directly.

12. How does JPRO Commercial Vehicle Diagnostics diagnose aftertreatment issues?

On one simple screen, JPRO allows you to view the overall health of the aftertreatment system. Users easily view information such as soot level, DPF lamp status, and engine derate as it relates to aftertreatment and current regen status. JPRO also provides regen zone information and explains to users why that vehicle is in a particular zone. From many screens outside of the aftertreatment section of JPRO, users will be alerted if a DPF regen is needed and/or inhibited. DPF regens can be initiated from multiple screens within JPRO.
Does JPRO Commercial Vehicle Diagnostics support OBDII?

13. Does JPRO Commercial Vehicle Diagnostics support OBDII?

Yes. View our coverage chart for additional details.

14.  Can I look at the data in log files?

To protect the vehicle owner’s vehicle data, log files are stored in a format that cannot be read by a simple text editor. However, log files can be played back with JPRO’s playback function to view all vehicle data as it was during the original connection.

15. What is the default location for saved log files?

JPRO stores log files by default in the C:\JPRO Logs\ folder on your device.

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