ROD AS 1412918 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
3031-15
Aftertreatment #1 DEF Tank Temperature : High - least severe (1) E960 (1)
High Aftertreatment #1 DEF Tank Temperature #1 The Aftertreatment #1 Diesel Exhaust Fluid (DEF) tank 1 temperature exceeds 80° C (176° F) on the DEF tank header 1.
The code is logged.
4427-15
Aftertreatment #2 DEF Tank Temperature : High - least severe (1) E962 (1)
Aftertreatment #2 DEF Tank Temperature : High - moderate severity (2) The Aftertreatment #2 DEF tank 1 temperature exceeds 80° C (176° F) on the DEF tank header 1.
The code is logged.
7572-15
Aftertreatment #1 DEF Tank Temperature #2 : High - least severe (1) E1696 (1)
The Aftertreatment #1 DEF tank 2 temperature exceeds 80° C (176° F) on the DEF tank header 2.
The code is logged.
7574-15
Aftertreatment #2 DEF Tank Temperature #2 : High - least severe (1) E1698 (1)
Aftertreatment #2 DEF Tank Temperature #2 : High - moderate severity (2) The Aftertreatment #2 DEF tank 2 temperature exceeds 80° C (176° F) on the DEF tank header 1.
The code is logged.
Table 2
Associated Codes
J1939 Code CDL Code Troubleshooting Procedure
110-0 E361 (3) Troubleshooting, "Coolant Temperature Is High"
110-15 E361 (1) Troubleshooting, "Coolant Temperature Is High"
110-16 E361 (2) Troubleshooting, "Coolant Temperature Is High" Probable Causes
Codes
Connectors and Wiring
Lines
Temperature
DEFRecommended Actions
Illustration 1 g06300737
The DEF pumps are on the front side of the Pump Electronic Tank Unit (PETU).
(1) Coolant diverter valve for Aftertreatment #2 DEF pump #2 system (red)
(2) Aftertreatment #2 DEF pump #2 header (red)
(3) Aftertreatment #2 DEF pump #1 header (yellow)
(4) Coolant diverter valve for Aftertreatment #2 DEF pump #1 system (yellow)
(5) Aftertreatment #2 DEF pump #2 (red)
(6) Aftertreatment #2 DEF pump #1 (yellow)
(7) Aftertreatment #1 DEF pump #2 (green)
(8) Aftertreatment #1 DEF pump #1 (blue)
(9) Coolant diverter valve for Aftertreatment #1 DEF pump #2 system (green)
(10) Aftertreatment #1 DEF pump #2 header (green)
(11) Aftertreatment #1 DEF pump #1 header (blue)
(12) Coolant diverter valve for Aftertreatment #1 DEF pump #1 system (blue)
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect to Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Troubleshoot any associated codes before continuing with this test.
Result: Result: A code is active or logged.
Proceed to Test Step 2.
2. Inspect the Electrical Connectors and the Wiring
A. Inspect the electrical connections to each of the Coolant Diverter Valves and to each of the Diesel Exhaust Fluid (DEF) tank headers. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information.
B. Inspect for corrosion or loose wires.
Connectors and Wiring
Result: The connectors and wiring appear to be OK.
Proceed to Test Step 3.
Result: There is a problem with the connectors and/or wiring.
Repair: Repair or replace the connectors or wiring. Ensure that all the seals are properly in place and ensure that the connectors are coupled.
Proceed to Test Step 5.
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