| Event Code | ||
|---|---|---|
| Code and Description | Conditions which Generate this Code | System Response |
| E007(2) High Aftercooler Temperature Derate | The aftercooler temperature is above the trip point temperature. | The engine will be derated.
The code is logged. |
| E008(3) High Aftercooler Temperature Shutdown | The aftercooler temperature is above the trip point temperature. | The engine will shut down. The code is logged. |
| E015(2) High Engine Coolant Temperature Derate | The engine coolant temperature is above the trip point temperature. | The engine will be derated.
The code is logged. |
| E016(3) High Engine Coolant Temperature Shutdown | The engine coolant temperature is above the trip point temperature. | The engine will shut down. The code is logged. |
| E017(1) High Engine Coolant Temperature Warning | The engine coolant temperature is above the trip point temperature. | The code is logged. |
| E279(1) High Aftercooler Temperature Warning | The aftercooler temperature is above the trip point temperature. | The code is logged. |
- Low coolant level
- Quality of coolant
- Air in cooling system
- Radiator
- Coolant leak
- Faulty radiator cooling fan (if applicable)
- Damaged hoses
- Faulty temperature regulator
- Faulty jacket water coolant pump
- Aftercooler
- Load on the system
Inspect the coolant level. If necessary, add coolant.
Check the quality of the coolant. The coolant should have the following properties:
- Color that is similar to new coolant
- Odor that is similar to new coolant
- Free from contamination
- Properties that are recommended by the engine's Operation and Maintenance Manual
If the coolant does not have these properties, drain the system and flush the system. Refill the cooling system according to the engine's Operation and Maintenance Manual.
Check for air in the cooling system. Air can enter the cooling system in different ways. The following conditions cause air in the cooling system:
- Filling the cooling system incorrectly
- Combustion gas leakage into the cooling system
Combustion gas can get into the system through the following conditions: internal cracks, damaged cylinder head and damaged cylinder head gasket.
Check the cooling fins on the radiator for dirt and/or for debris. Remove the dirt and/or debris.
- Check the cooling fins on the radiator for damage. Refer to the Systems Operation/Testing and Adjusting manual for instructions for testing and inspecting the cooling system.
- Check the radiator for internal blockage. Check the temperature difference between the inlet and the outlet of the radiator.
Check the cooling system for leaks.
- Inspect the coolant for presence of bubbles.
Faulty Engine Cooling Fan (if applicable)
Check for proper operation of the cooling fan.
Damaged hoses with leaks can normally be seen. Hoses that have no visual leaks can soften during operation. The soft areas of the hose can become kinked or crushed during operation. These areas of the hose restrict the coolant flow. Hoses can crack after a period of time. The inside of a hose can deteriorate and the loose particles of the hose can restrict the coolant flow.
A water temperature regulator that does not open or a water temperature regulator that only opens part of the way can cause overheating.
A water temperature regulator that does not close enables overcooling.
Faulty Jacket Water Coolant Pump
Inspect the impeller vanes at the jacket water pump for damage and/or for erosion. Repair impeller vanes and/or replace the impeller vanes.
A restriction of water flow through the aftercooler can cause overheating. Check for debris or deposits which restrict the free flow of water through the aftercooler.
Check that the engine is not loaded beyond design.