TOOL GP 3485430 - Caterpillar

Table 1 lists the diagnostic code that relates to low Aftertreatment Regeneration Device (ARD) temperature.Note: Refer to Troubleshooting, "Service Tool 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 to identify the root cause of the problem.
Table 2
Associated Diagnostic Trouble Codes
J1939 Code CDL Code
102-18 E1045 (2)
3480-15 E1050 (1)
3480-16 E1050 (2)
3480-17 E1052 (1)
3480-18 E1052 (2)
Illustration 1 g06127114
ARD combustion head (typical)
(1) Flame detection temperature sensor
(2) Port for the heated nozzle
(3) ARD combustion head
(4) ARD pilot filter connector
(5) ARD combustion head
(6) Inlet for the combustion airComplete 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 the electronic service tool and the Electronic Control Module (ECM). Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Table 2 lists the diagnostic trouble codes that are associated with the 3711-31 (E593 (2)) 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. Use a clamp-on ammeter to check the current flow through the heater.
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 the electronic service tool to perform an "ARD Air System Service Test" 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