FORK AS.- 1834799 - Caterpillar

Use this procedure in order to troubleshoot high coolant temperature or use this procedure if one of the following event codes is active. Refer to Troubleshooting, "Event Codes" for information about event codes. Access the monitoring system on Caterpillar Electronic Technician (ET) in order to view the current trip points for these codes.
Table 1
J1939 Code and Description    CDL Code and Description    Comments    
110-0
Engine Coolant Temperature : High - most severe (3)     E361(3)
High Engine Coolant Temperature     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
Engine Coolant Temperature : High - least severe (1)     E361(1)
High Engine Coolant Temperature     The engine coolant temperature has exceeded the trip point and delay time has expired.
The code is logged.    
110-16
Engine Coolant Temperature : High - moderate severity (2)     E361(2)
High Engine Coolant Temperature     The engine coolant temperature has exceeded the trip point and the delay time has expired.
The code is logged.    Probable Causes
Extreme Ambient Conditions
Low Coolant Level and/or Coolant Leakage
Coolant Temperature Sensor
Water Temperature Regulator and/or Pressure Relief Valve
Radiator
Engine Cooling Fan (if equipped)
Coolant 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. Extreme Ambient Conditions
A. Make sure that the engine is not operating in extreme ambient conditions.
   
Ambient Conditions
   
Result: The engine is not operating in extreme conditions.
Proceed to Test Step 2.
Result: The engine is operating in extreme conditions.
Refer to Operation within the safety section of the Operation and Maintenance Manual (OMM) for the safe operating temperature range.
   
2. Coolant
A. Inspect the coolant level.
B. Inspect the coolant for foaming or aeration.
   
Engine coolant level
   
Result: The engine coolant level is OK and there is no foam or aeration.
Proceed to Test Step 3.
Result: The engine coolant level is not OK.
Check the cooling system for leaks. Refer to Troubleshooting, "Coolant Level is Low" for additional information. Repair any leaks immediately.
Result: The engine coolant contains foam or aeration.
Repair: Repair the condition that is causing the foam or aeration. Refer to Test and Adjust, "Testing the Cooling System"
   
3. Coolant Temperature Sensor and/or the Circuit
A. Connect Cat ET.
B. Start the engine.
C. 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 4.
Result: The temperature sensor is not working properly.
Troubleshoot the circuit and the coolant temperature sensor. Refer to Troubleshooting, "Sensor Signal (Analog, Passive) - Test".
   
4. 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