Symptom Tree t024
| Cause | Correction |
|---|
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Coolant temperature gauge is malfunctioning |
Test the temperature gauge. Repair or replace the gauge, if necessary. Refer to Procedure 008-004 and the OEM service manual. |
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Engine is operating at low ambient temperature |
Check the winterfront, shutters, and under-the-hood air. Use under-the-hood intake air in cold weather. Refer to Operation of Diesel Engines in Cold Climates, Bulletin 3379009, and the Operation and Maintenance Manual ISM and ISMe Engines, Bulletin 3666319. |
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|
Coolant fill line is not routed correctly |
Check the routing of the coolant fill line. Refer to the OEM service manual. |
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Radiator shutters are stuck open or opening early |
Check the shutter operation. Repair or replace the shutters if necessary. Refer to Procedure 019-019 in the Troubleshooting and Repair Manual CELECT™ Plus System, Bulletin 3666130. |
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|
Fan drive or fan controls are malfunctioning |
Check the fan drive and controls. Refer to Procedure 008-024, 008-025, 008-026, 008-027, or 008-028. |
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|
Cooling system component is malfunctioning |
Perform the cooling system diagnostics test. Refer to Procedure 008-020. |
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Thermostat is not correct or is malfunctioning |
Check the thermostat for the correct part number and for correct operation. Refer to Procedure 008-013. |
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Thermostat seal is damaged, missing, or not installed correctly |
Check the thermostat seal. Check the thermostat for correct seating. Refer to Procedure 008-013 or 008-016. |
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Coolant flow through the radiator is not correct |
Check for correct coolant flow through the radiator. Refer to Procedure 008-042. |
