Symptom Tree t107
| Cause | Correction |
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Electronic fault codes active or high counts of inactive fault codes |
Refer to Section TF in the Troubleshooting and Repair Manual, CM870 Electronic Control System, Signature and ISX Engines, Bulletin 4021334, or ISX Fuel System Troubleshooting and Repair Manual, Bulletin 3666259, or Troubleshooting and Repair Manual, Power Generation Control Systems QSX15, QSK23, QSK45, QSK60, QSK78, and QST30 Series Engines, Bulletin 4021419 for fault code troubleshooting. |
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Lubricating oil temperature switch, gauge, or sensor malfunctioning or not in the correct location |
Check the oil temperature switch, gauge, or sensor for correct operation and location. Refer to Procedure 019-067 in the Troubleshooting and Repair Manual, CM870 Electronic Control System, Signature and ISX Engines, Bulletin 4021334, or 019-155 ISX Fuel System Troubleshooting and Repair Manual, Bulletin 3666259, or 019-155 Troubleshooting and Repair Manual, Power Generation Control Systems QSX15, QSK23, QSK45, QSK60, QSK78, and QST30 Series Engines, Bulletin 4021419. |
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Lubricating oil temperature sensor or circuit is malfunctioning (electronic controlled fuel system) |
Check the lubricating oil temperature sensor and circuit. Refer to Procedure 019-067 in the Troubleshooting and Repair Manual, CM870 Electronic Control System, Signature and ISX Engines, Bulletin 4021334, or 019-155 Troubleshooting and Repair Manual, Power Generation Control Systems QSX15, QSK23, QSK45, QSK60, QSK78, and QST30 Series Engines, Bulletin 4021419 or 019-155 ISX Fuel System Troubleshooting and Repair Manual, Bulletin 3666259. |
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Lubricating oil level is above or below specification |
Check the oil level. Add or drain oil, if necessary. Refer to Procedure 007-037. |
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Coolant temperature is above specification |
Refer to the Coolant Temperature is Above Normal – Sudden Overheat or the Coolant Temperature is Above Normal – Gradual Overheat symptom tree. |
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Lubricating oil thermostat is malfunctioning |
Check the oil thermostat. Refer to Procedure 007-039. |
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Lubricating oil cooler is malfunctioning |
Check the oil cooler. Refer to Procedure 007-003. |
