COVER-FUSE 3949527 - Caterpillar

Table 1
Event Code
CDL Code Code Description System Response
E361(1) High Engine Coolant Temperature The engine coolant temperature has exceeded the trip point and the delay time has expired.
The code is logged.
E361(2) The engine coolant temperature has exceeded the trip point and the delay time has expired.
The code is logged.
E361(3) Probable Causes
Coolant Level
Coolant Temperature Sensor
Radiator Pressure Cap and Water Temperature Regulator
Radiator
Cooling Fan
Water PumpRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 2
Troubleshooting Test Steps Values Results
1. Check the Coolant Level
Coolant Level
Result: The coolant level is OK.
Proceed to Test Step 2.
Result: The coolant level is low.
Repair: Refill the cooling system with coolant.
If the repair does not resolve the problem, proceed to Test Step 2.
2. Check the Coolant Temperature Sensor
A. Check the reading of the coolant temperature on Cat ET. The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable.
Sensor
Result: The coolant temperature sensor is OK.
Proceed to Test Step 3.
Result: The coolant temperature sensor is NOT OK.
Repair: 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".
3. Perform a Pressure Test on the Cooling System
A. Refer to Systems Operation/Testing and Adjusting for the correct procedure on performing the pressure test.
Pressure Test
Result: The pressure is within specifications.
Proceed to Test Step 4.
Result: The pressure is not within specifications.
Repair: Replace any worn or damaged components.
If the repair does not eliminate the problem, proceed to Test Step 4.
4. Inspect the Radiator
A. Check the radiator fins for dirt, debris, and/or damage.
B. Check for internal blockage.
Radiator
Result: The radiator is OK.
Proceed to Test Step 5.
Result: The radiator is NOT OK.
Repair: Repair or replace the radiator and clean the fins in necessary.
If the repair does not resolve the problem, proceed to Test Step 5.
5. Inspect the Cooling Fan
A. If the fan is belt driven, check for loose drive belts.
B. Check the fan clutch, if equipped. A fan clutch or a hydraulic driven 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. Refer to Troubleshooting, "Cooling Fan Control - Test" for troubleshooting information.
Cooling Fan
Result: The cooling fan is OK.
Proceed to Test Step 6.
Result: The cooling fan is NOT OK.
Repair: Repair or replace the cooling fan.
If the repair does not resolve the problem, proceed to Test Step 6.
6. Inspect the Water Pump
A. Inspect the impeller of the coolant pump for damage or erosion.
B. Ensure that the drive gear is not loose on the drive shaft of the coolant pump.
Water Pump
Result: The water pump is OK.
Result: There was a problem with the water pump.
Repair: Repair or replace damaged water pump components.
Verify that the repair eliminated the problem.