Evaluating the NOx Sensor Test for Paccar EPA13 MX Engines Using JPRO

This guide outlines the steps to evaluate the NOx Sensor Test for all Paccar EPA 13 MX engines using JPRO. The test ensures the accuracy and functionality of the NOx sensor within the SCR system.

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Important Note:

The tip of the NOx sensor becomes extremely hot during the test. Ensure it is hung away from any flammable or heat-sensitive objects to prevent accidents.

Steps to Perform the NOx Sensor Evaluation Test:

1. Initiate the Test
   • Select the NOx Sensor Evaluation Test in JPRO.
   • Press Enter or click the Start button to begin.
2. Choose the Sensor
   • In the test dialog, select the NOx sensor you want to evaluate.
   • Click the Start button to initiate the testing process.
3. Monitor the Process
   • Once started, the Start button changes to a Stop button, and an indicator light signals the test is in progress.
   • During the test, JPRO monitors and updates the sensor’s status in real-time within the status window.
   • The NOx sensor undergoes heating for approximately 10 minutes before the evaluation begins.
4. Stop the Test if Necessary
   • You can halt the test at any time by clicking the Stop button.
5. Complete the Test
   • When the evaluation concludes, click the Finish button.
   • A warning will prompt you to allow the NOx sensor to cool before reinstalling it.
   • Confirm by clicking OK to return to the Test Selection screen.

More topics about JPRO Diagnostic, please refer to:JPRO Diagnostics Guide