LINES GP-AUXILIARY HYDRAULIC 3977146 - Caterpillar

Table 1
Diagnostic Trouble Codes    
J1939 Code    CDL Code    Code Description
(code descriptions may vary)    Comments    
110-0     E361(3)     Engine Coolant Temperature High - Most Severe (3)     The engine coolant temperature has exceeded the trip point and the delay time has expired.
Engine power is derated.
The code is logged.    
110-15     E361(1)     Engine Coolant Temperature High- Least Severe (1)     The engine coolant temperature has exceeded the trip point and delay time has expired.
The code is logged.    
110-16     E361(2)     High Engine Coolant Temperature High - Moderate Severity (2)     The engine coolant temperature has exceeded the trip point and the delay time has expired.
The code is logged.    Probable Causes
Low Coolant Level and/or Coolant Leakage
Coolant Temperature Sensor
Water Temperature Regulator and/or Pressure Relief Valve
NOx Reduction System (NRS) Cooler Leak
Radiator
Heat Exchanger
Engine Cooling Fan (if equipped)
Coolant Pump
Cylinder Head GasketRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps    Values    Results    
1. Coolant
A. Inspect the coolant level.
   
Engine Coolant Level
   
Result: The engine coolant level is OK.
Proceed to Test Step 2.
Result: The engine coolant level is not OK.
Repair: Check the cooling system for leaks. Refer to Troubleshooting, "Coolant Level is Low" for additional information. Repair any leaks immediately.
   
2. Coolant Temperature Sensor and/or the Circuit
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.
   
Coolant Temperature Sensor
   
Result: The temperature sensor is working properly.
Proceed to Test Step 3.
Result: The temperature sensor is not working properly.
Repair: Troubleshoot the circuit and the coolant temperature sensor. Refer to Troubleshooting, "Sensor Signal (Analog, Passive) - Test".
   
3. Water Temperature Regulator and/or Pressure Relief Valve
A. Pressure-test the cooling system. Refer to Systems Operation/Testing and Adjusting for the correct procedure.
B. Check that the seating surfaces of the pressure relief valve and the radiator cap are clean and undamaged.
C. Check operation of the pressure relief valve and/or the water temperature regulator.
   
Temperature Regulator
   
Result: The pressure relief valve and/or the water temperature regulator are operating properly.
Proceed to Test Step 4.
Result: The pressure relief valve and/or the water temperature regulator are not operating properly.
Repair: Clean the components and/or replace the components.
   
4. NRS Cooler Leak
A. Check the NRS cooler for leaks. Refer to Testing and Adjusting, "Exhaust Cooler (NRS) - Test".
   
NRS Cooler    
Result : The NRS cooler has a leak.
Repair: Replace the NRS cooler. Refer to the Disassembly and Assembly manual for the related procedure.
Result : The NRS cooler does not have a leak.
Proceed to Test Step 5.
   
5. Radiator
A. Check the radiator fins for dirt, debris, and/or damage.
B. Check for collapsed hoses and/or other restrictions.
C. Check the radiator for internal blockage.
Ensure that the radiator size is sufficient. An undersized radiator does not have enough area for the effective release of heat. An undersized radiator may cause the engine