KIT- 3348405 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
3031-16
Aftertreatment #1 DEF Tank Temperature : High - moderate severity (2) E960-2
High Aftertreatment #1 DEF Tank Temperature #1 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
Table 3
Troubleshooting Test Steps Values Results
1. Check for Associated Codes
A. Connect to Cat® Electronic Technician (ET).
B. Determine if an associated code is present.
Associated Code
Result: An associated code is present.
Repair: Troubleshoot the associated code.
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 more 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.
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.
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 OFF.
B. Disconnect the coolant diverter valve wiring harness connector from the coolant diverter valve.
C. Turn the keyswitch to ON.
D. Connect to "Engine ECM" 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 OFF.
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 standards.
DEF
Result: The tank fluid was replaced.
Return the unit to service.
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).