Troubleshoot engine faults
Review ECM faults, identify which faults to repair first, open fault details and troubleshooting information, and clear fault codes after the repair.
Expected result
You have reviewed the fault groups and available fault details, snapshot, and FIS information. After the repair and clear-fault process, DTK confirms that faults cleared successfully. Review the fault status to verify the result.
Training video
GDTK Windows Demo Faults
Watch on YouTubeEngine fault troubleshooting workflow
- View faults.
- View FIS.
- Perform a diagnostic session, as needed.
- Complete the applicable repair and verification.
- Clear faults when appropriate.
Windows procedure
Connect to and identify the correct engine. From its Device Dashboard, select Faults to open Faults and Analysis.
Internet connectivity is required for Faults and Analysis. The device running DTK must have internet access. Opening Fault Information System (FIS) content also requires internet access.
Primary, Related, and Unprioritized faults
The Faults and Analysis screen groups faults as Primary, Related, and Unprioritized.
- Primary faults: Critical faults that should be repaired first. Resolving a primary fault will often also resolve related or secondary faults.
- Related faults: Secondary faults to review alongside the primary faults.
- Unprioritized faults: Faults listed in the Unprioritized group. Include these faults in your review of the engine concern.
Fault Details and snapshot
Select an individual Cummins fault code entry to display Fault Details and its snapshot, if supported. Review the available details before proceeding with troubleshooting.
Fault Information System (FIS)
Select the fault code number to open the corresponding FIS file in a web browser. Internet access is required.
Use the fault-specific information to guide troubleshooting. See View FIS.
Perform a diagnostic session
Use a Diagnostic Session to document the engine concern, equipment information, diagnostic work, and solution outcome.
- From the connected engine's Faults screen, select Start Diagnostic Session.
- Choose whether to start a new session or continue an existing session.
- Review the equipment information, make any needed changes, and select Continue.
- After verifying the Solution specification, select the appropriate outcome and enter comments. Complete the required information, then select Submit when it becomes available.
You can also upload supporting files, complete the ACCESSIBILITY CHECKLIST, and view or share session history. See Perform a diagnostic session for the detailed Windows instructions.
Clear fault codes
Review and document fault information and complete the applicable repair before clearing codes.
- On the Faults screen, select the Clear Faults button at the top of the screen. You can also open the top-right menu and select Clear All Faults.
- Confirm Clear All Faults Codes to proceed.
- Follow the app's Key Off/Key On process.
- Wait for the app to confirm that faults cleared successfully.
If you select Cancel, no faults will be cleared.
Common problems
If Faults and Analysis or FIS does not open, check internet connectivity on the device running DTK. If faults cannot be read or cleared, verify the engine connection and record the fault details before contacting support.
DTK Mobile differences
View and investigate faults
On Mobile, select Faults from the Device Dashboard to open Faults and Analysis. The internet requirement, Primary, Related, and Unprioritized groups, Fault Details, supported snapshots, and FIS workflow described above also apply to Mobile.
Prognostic Faults
Prognostic Faults provide advance warning of faults before they occur, helping technicians address developing concerns and reduce unplanned downtime.
Clear fault codes on Mobile
- On the Faults screen, select the Clear Faults button at the bottom of the screen. You can also open the top-right menu and select Clear All Faults.
- Confirm Clear Faults Now to proceed.
- Follow the app's Key Off/Key On process.
- Wait for the app to confirm that faults cleared successfully.
If you select Cancel, no faults will be cleared.