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The Fault Guidance button on the main toolbar allows you to view troubleshooting information, wiring diagrams and step-by-step troubleshooting procedures for all reported faults that are supported by Noregons NextStep Fault Guidance.

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JPRO Commercial Vehicle Diagnostics 2023

1. While connected to a heavy-duty vehicle, select the Fault Guidance button on the main toolbar.
NOTE: If you are not connected or if no reported faults are currently supported, the Fault Guidance button will not be enabled.
2. The Fault Guidance window appears. Upon initial launch, no fault will be selected. You must select the fault to troubleshoot from the Vehicle Faults grid at the bottom of the window.
3. Select the fault to troubleshoot. The Overview contains general information for the selected fault condition.
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5. Select the Wiring tab to view wiring diagrams for the selected fault.
6. Select the Troubleshooting Tasks tab to view step by step troubleshooting steps.

7. Select the Vehicle Values tab to view fault related data.
8. Select the Clear Faults button to verify the repair procedure by forcing the ECU to re-evaluate the fault condition.
9. Select the Bi-Directional button to access JPROs Bi-Directional features as instructed by the troubleshooting tasks.
NOTE: Clear Faults and Bi-Directional buttons are not available during playback.
10. Select the Additional Resources button to access:
a. Select the Applications button to access JPROs Application Portal.
b. Select the Industry Terms button to view definitions for common industry terms.
c. Select the Maintenance or Service Data button to view the installed troubleshooting guide for the selected ECU.
NOTE: Maintenance or Service Data button is only enabled if installed troubleshooting guides have been located on the computer.
11. Select the Most Likely Repair button to view the Most Likely Repair information for supported engine faults.
12. Select the Possible Unrepaired Recalls button to view Possible Unrepaired Recalls for the connected vehicle.

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