STRIP 1657211 - Caterpillar

Table 1 lists the diagnostic code that relates to low Aftertreatment Regeneration Device (ARD) temperature.Note: Refer to Troubleshooting, "Cat ET Service Features" for information about service features.
Table 1
Diagnostic Trouble Codes    
J1939 Code    CDL Code    Code Description
(code descriptions may vary)    Comments    
3711-31     E593 (2)     Aftertreatment Insufficient Temperature to Complete Regeneration     Active regeneration failed due to an inability of the Diesel Particulate Filter (DPF) to reach a high enough temperature. The code is logged. Engine power is derated.    
Follow the troubleshooting procedure in order to identify the root cause of the problem.    
Table 2
Associated Diagnostic Trouble Codes    
102-18    
3480-15    
3480-16    
3480-17    
3480-18    
4077-15    
4077-16    
4077-17    
4077-18    
E1050    
E1051    
E1052    
E1053    
Illustration 1 g03752236
ARD combustion head (typical) (1) Flame detection temperature sensor (2) Port for the heated nozzle (3) ARD pilot filter connector (4) ARD main filter connector (5) ARD combustion head (6) Inlet for the combustion air Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps    Values    Results    
1. Check for Associated Diagnostic Trouble Codes
A. Establish communication between Cat ET and the Electronic Control Module (ECM). Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing associated diagnostic trouble codes.
C. Table 2 lists the diagnostic trouble codes that are associated with the E593 (2) or 3711-31 code. Determine if any of the codes in Table 2 are present.
   
Diagnostic Code
   
Result: An associated diagnostic trouble code is not present.
Proceed to Test Step 2.
Result: An associated diagnostic trouble code is present.
Repair: Troubleshoot the associated diagnostic code.
   
2. Check the Current Flow Through the Heater
A. Verify that the engine is off. Check the current flow through the heater. Refer to Systems Operation/Testing and Adjusting, "ARD Nozzle Heater (Current) - Test" for the correct procedure.
   
Between 7.0 A and 14 A for a 12 V system. Or, between 3.5 A and 7 A for a 24 V system
   
Result: The current flow is OK.
Proceed to Test Step 3.
Result: The current flow is not between 7.0 A and 14 A for a 12 V system. Or, the current flow is not between 3.5 A and 7 A for a 24 V system.
Repair: There may be a problem with the ARD nozzle. Refer to Troubleshooting, "ARD Nozzle Heater - Test".
   
3. Perform the "ARD Air System Service Test"
A. Reset all active codes and clear all logged codes. Use Cat ET to perform an "ARD Air System Service Test" in order to verify that the problem is resolved.
   
ARD Air System Service Test
   
Result: The "ARD Air System Service Test" failed.
Repair: There is a problem with the ARD combustion air system. Refer to Troubleshooting, "ARD Combustion Air - Test".
Result: The "ARD Air System Service Test" passed.
Proceed to Test Step 4.
   
4. Perform a "Manual DPF Regeneration"
This test must be performed through Cat