PLUG 5P6719 - Caterpillar

Use this procedure in order to troubleshoot a high coolant temperature or use this procedure if any of the following event codes are active or logged.
Table 1
Event Code
Description Conditions which Activate the Code System Response
E017 (1) High Engine Coolant Temperature Warning
361(1) High Engine Coolant Temperature Warning The engine coolant temperature has exceeded the trip point and the delay time has expired. The alarm output is activated. The code is logged.
E015 (2) High Engine Coolant Temperature Derate
361(2) High Engine Coolant Temperature Derate The alarm output is activated. Engine power is derated. The code is logged.
E016 (3) High Engine Coolant Temperature Shutdown
361 (3) High Engine Coolant Temperature Shutdown The shutdown output is activated. The code is logged. The engine is shut down. Note: Refer to Troubleshooting, "Engine Monitoring System" for information on trip points and delay times.Probable Causes
High ambient temperature and/or high inlet air temperature
Low coolant level and/or coolant leakage
Insufficient flow of air or coolant through the radiator or heat exchanger
Faulty water temperature regulators
Faulty coolant temperature sensor and/or circuit
Insufficient flow of coolant through the engine
Exhaust restriction
Excessive load
Incorrect base timing
Incorrect air/fuel ratioRecommended Repairs
Check for High Ambient Temperature and/or for High Inlet Air Temperature
Determine if the ambient air temperature is within the design specifications for the cooling system.Check for high inlet air temperature. Refer to Troubleshooting, "Inlet Air Temperature Is High".Determine the cause of the high air temperature. Make corrections, when possible.Check for a Low Coolant Level and/or for Coolant Leakage
Note: Low coolant level can be the effect of overheating rather than the cause.Check the coolant level.Run the engine to operating temperature. Inspect the cooling system for leaks.Determine whether the leak occurs before the engine overheats.Add coolant, if necessary. If leaking is found, make the necessary repairs.Check for Insufficient Flow of Air and of Coolant Through the Radiator or Heat Exchanger
Radiator
Check the fins of the radiator for obstructions. Check the fan for proper operation.If the radiator fins are obstructed, clean the fins. If the fan does not operate properly, make the necessary repairs.Heat Exchanger
Check for sufficient flow and temperature of the cooling water through the heat exchanger. If the flow of cooling water through the heat exchanger is insufficient, determine the location of the obstruction. If the temperature of the cooling water is too high, determine the cause. Make the necessary repairs.Check the Water Temperature Regulators
Check the water temperature regulators for proper operation. Refer to Systems Operation/Testing and Adjusting, "Testing the Cooling System".Replace the water temperature regulators, if necessary.Check the Coolant Temperature Sensor and/or the Circuit
Check the reading of the coolant temperature on the Caterpillar Electronic Technician (ET). The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable.If the reading on Cat ET for the coolant temperature is not reasonable, troubleshoot the circuit and the coolant temperature sensor. Refer to Troubleshooting, "Sensor Signal (Analog, Passive) - Test".Check the Flow of Coolant Through the Engine
During normal operation, check the status of the following components:
Switch for the inlet pressure of