0334736 JOHNSON BUMPER

Table 1
J1939 Code and Description CDL Code and Description Comments
110-0
Engine Coolant Temperature : High - most severe (3) E361 (1)
High Engine Coolant Temperature The code is logged.
110-15
Engine Coolant Temperature : High - least severe (1) E361(2)
High Engine Coolant Temperature The code is logged.
Engine power is derated.
110-16
Engine Coolant Temperature : High - moderate severity (2) E361(3)
High Engine Coolant Temperature The code is logged.
If the ground speed of the vehicle is zero and the parking brake is set, the engine will be shut down. Probable Causes
Diagnostic Codes and Event Codes
Low coolant level
Radiator
Coolant leak
Engine cooling fan
Pressure cap for the radiator
Temperature Control Module (TCM)
Jacket water pump
Engine overloadRecommended Actions
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Determine if the event code that directed to this story is present.
C. Look for active diagnostic codes that are associated with the system for the event code that directed to this story.
Codes
Result: No active codes
Return the unit to service.
Result: An associated code is present.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: A 110–0, 110–15, or 110–16 code is present.
Proceed to Step 2.
2. Check for a Low Coolant Level
Coolant
Result: The coolant level is acceptable.
Proceed to Step 3.
Result: The coolant level is unacceptable.
Repair: Add coolant
Proceed to Step 3.
3. Inspect the Radiator
A. Check the cooling fins on the radiator for dirt and/or for debris.
B. Check the cooling fins on the radiator for damage.
C. Check the radiator for internal blockage. Check the temperature difference between the inlet and the outlet of the radiator.
Radiator
Result: The cooling fins are clean.
Continue with this step.
Result: The cooling fins are not damaged.
Continue with this step.
Result: The cooling fins are not clean.
Repair: Remove dirt and/or debris.
Result: The cooling fins are damaged.
Repair: Refer to the Systems Operation/Testing and Adjusting manual for instructions for testing and inspecting the cooling system.
Result: The radiator has an internal blockage.
Repair: Clean the radiator or perform the necessary repairs.
Result: The radiator does not have an internal blockage
Proceed to Step 4.
4. Check for Coolant Leaks
A. Check the cooling system for leaks.
- Inspect the coolant for presence of bubbles.
- Check the cooling system for combustion gases.
Leak
Result: There are no apparent leaks.
Proceed to Step 4.
Result: There are leaks found.
Repair: Repair or replace as necessary.
Proceed to Step 5.
5. Inspect the Engine Cooling Fan for Proper Operation
Fan
Result: The cooling fan is operating properly.
Proceed to the next step.
Result: The cooling fan is not operating properly.
Repair: Repair or replace as necessary.
Proceed to Step 6.
6. Pressure Cap for the Radiator
A. Check operation of the pressure relief valve and the radiator cap.
Relief Valve
Result: The pressure relief valve is operating properly.
Proceed to Step 7.
Result: The pressure relief valve is not operating properly.
Repair: If necessary, clean the seal and the seating surface in the cap. Check that the seating surface on the fill neck of the radiator is clean and undamaged. If the sealing components of the pressure cap are suspect, replace the cap.
7. Temperature Control Module
A. Visually inspect the wiring from the TCM to the coolant temperature sensor and from the temperature control module to the power supply. Visually inspect the 12-pin connector and the 8-pin connector at the temperature control module. Check for a tight connection at the connectors.
B. Check for proper operation of the electronic fluid temperature control by following the procedure below:
1. Ensure that the keyswitch is in OFF. Turn the electrical disconnect to OFF.
2. Remove the cover bolts from the motor assembly. Remove the inspection cover from the motor.
3. Use the appropriate wrench to rotate the main shaft extension. Ensure that the shaft rotates freely. Rotate the shaft to ensure that the piston is not positioned at one of the ends stops of the valve.
4. Visually inspect the main shaft extension for rotation while turning on power to the ECM and keyswitch circuit. The shaft will rotate several times during the powering up sequence.
5. During the power-up sequence, listen for the valve to travel to the end stop. Listen for the piston to hammer the end stop to establish the valve position.
6. With the electrical disconnect in the ON position, disconnect the engine harness connector (12-pin connector) at the controller. Codes related to the valve will be activated.
7. Use a wrench to rotate the main shaft extension to position the valve piston away from the end stop of the valve.
8. Connect the connector and observe the motor assembly. The valve will repeat the power-up sequence when the engine harness (power) is connected. While you connect the connector, check the main shaft extension for rotation. The valve will hammer at the end stop.
9. Turn the electrical disconnect to OFF. Replace the inspection cover and connect all connectors.
C. Disconnect the engine harness connector (12 pin) at the temperature control module.
D. Measure the voltage between terminal 1 (voltage supply) and terminal 5 (return) on the harness side of the 12-pin connector at the TCM. The supply