Symptom Tree t146
Cause | Correction |
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The steps in this tree are intended to cover vehicles equipped with an on vehicle method of activating a stationary regeneration. This troubleshooting tree can also be used if INSITE™ electronic service tool Aftertreatment Diesel Particulate Filter Regeneration Test will not operate.
Electronic fault codes active or high counts of inactive fault codes |
View and troubleshoot the fault codes with INSITE™ electronic service tool. Refer to Section TF for active fault code troubleshooting or Procedure 019-362 for inactive fault code troubleshooting in the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Soot load of the Aftertreatment Diesel Particulate Filter is too low |
A stationary regeneration can not be performed while the soot load is in the normal range. Refer to the Aftertreatment Diesel Particulate Filter Regeneration Test section of Procedure |
The correct Stationary Regeneration procedure is not being followed |
Refer to the OEM instructions on how to perform a stationary regeneration via the drive/vehicle interface or refer to the Aftertreatment Diesel Particulate Filter Regeneration Test in Procedure 014-013 for the INSITE™ electronic service tool procedure |
OEM or customer-selected inhibit feature is preventing a stationary regeneration |
Refer to the OEM instructions on Regeneration inhibit features. |
Programmable parameters or selected features are not correct |
Check the programmable parameters and the selected features with an electronic service tool. Set the parameters and features again if necessary. Refer to Procedure 019-078 in the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control System, ISX and ISM Engines, Bulletin |
Vehicle brake switch or circuit is malfunctioning |
Check the vehicle brake switch and circuit. Refer to Refer to Procedures 019-088 and 019-089 in the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Vehicle speed sensor (VSS) or circuit is malfunctioning |
Use an electronic service tool to monitor the vehicle speed while the vehicle is not moving. Refer to the appropriate electronic service tool manual. If the monitor shows speed, check the sensor and circuit. Refer to Procedures, 019-091, and 019-093 the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Clutch switch or circuit is malfunctioning |
Check the clutch switch adjustment, switch, and circuit. Refer to Procedure 019-009 or 019-010 the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Accelerator pedal or lever position sensor or circuit is malfunctioning |
Check for foot pedal restriction. Check the accelerator pedal or lever position sensor and circuit. Refer to Procedure 019-085 the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Cruise control/PTO selector switch or circuit is malfunctioning |
Check the cruise control/PTO selector switch and circuit. Refer to Procedures 019-021 and 019-022 the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |
Vehicle parking brake is not set |
Verify the parking brake is set. Refer to the OEM instructions. |
Transmission is not in Park, if provided, otherwise in Neutral |
Verify the transmission is in Park, if provided, otherwise in Neutral. Refer to the OEM instructions. |
Electronic control module (ECM) calibration is malfunctioning |
Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history for applicable fixes to the calibration stored in the ECM. Refer to the calibration history spreadsheet Click here to see ecm_calibration_rev_history.xls on QuickServe® Online Internet Website or the INCAL™ calibration CD. Compare the calibration stored in the ECM with the engine rating and the Control Parts List (CPL), Bulletin 4021326 or 4021327. If necessary, recalibrate the ECM. Refer to the appropriate electronic service tool manual and Procedure 019-032 the Troubleshooting and Repair Manual, CM871 and CM876 Electronic Control Systems, ISX and ISM Engines, Bulletin |