Symptom Tree t112
| Cause | Correction |
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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. |
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Electronic control module (ECM) calibration is malfunctioning |
Verify the 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 or the INCAL™ CD-ROM. 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. |
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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 Procedure 019-090, 019-091, and 019-093. |
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Clutch switch or circuit is malfunctioning |
Check the clutch switch adjustment, switch, and circuit. Refer to Procedure 019-009 or 019-010. |
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Engine brake on/off switch or circuit is malfunctioning |
Check the engine brake on/off switch and circuit. Refer to Procedure 019-034 and 019-035. |
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Vehicle brake switch or circuit is malfunctioning |
Check the vehicle brake switch and circuit. Refer to Procedure 019-088 and 019-089. |
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Cruise control/PTO on/off switch or circuit is malfunctioning |
Check the cruise control/PTO on/off switch and the circuit. Refer to Procedure 019-021 and 019-022. |
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Cruise control/PTO selector switch or circuit is malfunctioning |
Check the cruise control/PTO selector switch and circuit. Refer to Procedure 019-023 and 019-024. |
