HOSE 3516538 - Caterpillar

Table 1
Diagnostic Trouble Codes    
J1939 Code    CDL Code    Code Description
(code descriptions may vary)    Comments    
3031-16     E960-2     Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : High - moderate severity (2)     The code is logged when the DEF tank temperature exceeds 80° C (176° F).    
Table 2
Associated Diagnostic Trouble Codes    
E361 (1)    
E361 (2)    
E361 (3)    
110-0    
110-15    
110-16    
Follow the troubleshooting procedure in order to identify the root cause of the problem.    Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps    Values    Results    
1. Check for Associated Codes
A. Connect to Cat ET.
B. Determine if an associated code is present.
   
Associated Code
   
Result: An associated code is present.
Repair: Troubleshoot the associated code. Refer to Troubleshooting, "Diagnostic Trouble Codes" for the correct procedure.
Result: An associated code is not present.
Proceed to Test Step 2.
   
2. Check the Electrical Connections
A. Inspect the electrical connections to the Coolant Diverter Valve. Inspect all electrical connections to the Diesel Exhaust Fluid (DEF) tank header. Refer to Troubleshooting, "Electrical Connectors - Inspect" for further information.
B. Inspect for corrosion or loose wires.
   
Corrosion or Loose wires
   
Result: The connections are free of corrosion and are not loose.
Proceed to Test Step 3.
Result: The connections are not free of corrosion and/or are loose.
Repair: Make the necessary repairs.
Proceed to Test Step 4.
   
Illustration 1 g03755496
Coolant line configuration may be different depending on the application. (1) Coolant Supply Fitting (2) Coolant Diverter Valve (3) Coolant Return Fitting (4) DEF Tank Header Connector
Table 4
Troubleshooting Test Steps    Values    Results    
3. Check the Coolant Supply and Return Lines for Proper Installation
A. Inspect the coolant supply and return lines from the engine to the Pump Electronic Tank Unit (PETU). Make sure that the coolant is flowing in the correct direction.
B. Refer to Illustration 1.
   
Correct Installation
   
Result: The lines are installed correctly.
Proceed to Test Step 4.
Result: The lines are not installed correctly.
Repair: Correctly install the lines. Refer to the Disassembly and Assembly manual for the correct procedure. Proceed to Test Step 5.
   
4. Check the Coolant Diverter Valve Solenoid for Proper Operation
A. Turn the keyswitch to the OFF position.
B. Disconnect the coolant diverter valve wiring harness connector from the coolant diverter valve.
C. Turn the keyswitch to the ON position.
D. Connect to "Diesel Exhaust Fluid Controller #1" using Cat ET.
E. Start the engine. Allow the engine to warm up to operating temperature.
F. Monitor the "DEF Tank Temperature" using Cat ET.
G. Turn the keyswitch to the OFF position.
   
Temperature Rise
   
Result: The tank temperature did not increase.
Repair: Connect the coolant diverter valve to the wiring harness.
Proceed to Test Step 5.
Result: The tank temperature did increase.
Repair: A failed coolant diverter valve has been detected. Replace the coolant diverter valve. Refer to the Disassembly and Assembly manual for the correct procedure.
Proceed to Test Step 5.
   
5. Replace the DEF
A. Drain the DEF from the tank.
B. Replace with DEF that meets ISO 22241