TUBE AS 4153257 - Caterpillar

Which Generate This Code:The following conditions occur:361(1)
The engine has been running for at least three minutes.
The coolant temperature is at least 110 °C (230 °F) for ten seconds.Note: The warning will be cancelled if the coolant temperature falls 2 °C (36 °F) below the trip point for four seconds.361(2)
The engine has been running for at least three minutes.
The coolant temperature is at least 111 °C (232 °F) for ten seconds.Note: The derate will be cancelled if the coolant temperature falls 2 °C (36 °F) below the trip point for 45 seconds.System Response:361(1)The engine's Electronic Control Module (ECM) will generate a E361-1 event code.Caterpillar Electronic Technician (ET) will display "Warning" in the first "Engine Status" box on any Cat ET status screen.361(2)The ECM will generate a E361-2 event code.Caterpillar Electronic Technician (ET) will display "Engine Derate" in the first "Engine Status" box on any Cat ET status screen.361(1)
There are no performance effects.361(2)The ECM will derate power by 25 percent. The ECM will derate power an additional 25 percent for every 1 °C (2 °F) over 111 °C (232 °F). The power will be derated at one percent per second.Test Step 1. Check the Engine's Cooling System
Verify that the cooling system is filled to the proper level. If the coolant level is too low, air will get into the cooling system. Air in the cooling system will cause a reduction in coolant flow.
Check the radiator or the heat exchanger for a restriction to coolant flow.
Check for debris or damage between the fins of the radiator core. Debris between the fins of the radiator core restricts air flow through the radiator core.
Check internally for debris, dirt, or deposits on the radiator core. Debris, dirt, or deposits will restrict the flow of coolant through the radiator.
Check the mixture of antifreeze and water. Make sure that the coolant mixture meets recommendations.
Check the water temperature regulator. A water temperature regulator that does not open, or a water temperature regulator that only opens part of the way can cause overheating.
Check the water pump. A water pump with a damaged impeller does not pump enough coolant. Remove the water pump and check for damage to the impeller.
If the cooling system for this application is equipped with a fan, check the operation of the fan. A fan that is not turning at the correct speed can cause improper air speed across the radiator core. The lack of proper air flow across the radiator core can cause the coolant not to cool to the proper temperature differential.
Check for air in the cooling system. Air can enter the cooling system in different ways. The most common causes of air in the cooling system are the incorrect filling of the cooling system and combustion gas leakage into the cooling system. Combustion gas can get into the system through inside cracks, a damaged cylinder head, or a damaged cylinder head gasket.
Check the cooling system hoses and clamps. Damaged hoses with leaks can normally be seen. Hoses that have no visual leaks