C13, C15, and C18 Engines Troubleshooting – ARD Is Disabled

Use this procedure in order to troubleshoot a failed aftertreatment regeneration or use this procedure if one of the following event codes are active. Refer to Troubleshooting, “Event Codes” for information about event codes. For information on the engine monitoring system, refer to Troubleshooting, “Engine Monitoring System”.

Active regenerations usually occur during normal engine operation. However, engine operation or operator desire may cause the operator to activate the force regeneration switch. This switch signals the Engine Electronic Control Module (ECM) that a forced regeneration is desired. The engine ECM will determine the status of the engine and the products operating condition and determine if it is okay to begin an active regeneration. It takes approximately 5 seconds for the engine ECM to determine if the conditions are acceptable for an active regeneration to begin.

If conditions allow that an active regeneration may begin, the ECM will illuminate the appropriate indicators and begin the active regeneration. If conditions will not allow an active regeneration to begin, the ECM will illuminate the Action Lamp and annunciate one of the following Diagnostic Trouble Codes (DTCs). The code will appear on the Messenger Display. The code will also be displayed on Cat ET.

Note: One forced regeneration per key cycle is permitted if a failure to ignite, insufficient temperature to complete regeneration, or loss of combustion diagnostic trouble code is active. This determines if the regeneration can run and clear the event.

Table 1
Diagnostic Trouble Codes
CDL Code J1939 Code Code Description
(code descriptions may vary)
Comments
E1239 (1) 3750-31 DPF #1 Conditions Not Met for Active Regeneration The operator did not allow enough time for regeneration to occur. The operator must respond when the DPF lamp is illuminated. The operator must allow the engine to idle until the soot load is reduced to 50 percent. Refer to the Operation and Maintenance Manual for information on performing a manual regeneration.
E993 (2) 3703-31 DPF Active Regeneration Inhibited Due to Inhibit Switch The regeneration system is disabled due to the ARD Disable Switch in the operator interface.
E1040 (2) 3530-31 ARD Manually Disabled The regeneration system is disabled by the Caterpillar Electronic Technician (ET).
E1300 (1) 3716-15 Aftertreatment Regeneration Cannot Start Due To Low Engine Temperature The coolant temperature is below 40° C (104° F ) and the Diesel Particulate Filter inlet temperature is below
50° C (122° F).
If the ambient temperature is
0° C (32° F) or below, the coolant temperature must be
60° C (140° F) for an active regeneration to begin.
E1300 (2) 3716-31 Aftertreatment Regeneration Cannot Start Due To Low Engine Temperature The DPF soot loading exceeded 100% when the ambient temperature was below
0° C (32° F) and coolant temperature was below
50° C (122° F). A regeneration was attempted but failed. Automatic regenerations are disabled, Refer to Test Step 5.
E1301 (1) 3712-15 Aftertreatment Regeneration Cannot Start Due To System Fault There is an active fault related to the ARD combustion air system, ARD fuel system, or ARD ignition system.
E1302 (1) 3750-15 Aftertreatment Regeneration Cannot Start Due To Conditions Not Met One or more conditions are not allowing an Aftertreatment Regeneration to start, Refer to Test Step 7.
E1305 (1) 3483-11 Initial Assembly Aftertreatment #1 Regeneration Required Initial assembly of the aftertreatment system is complete and an active regeneration has not been performed or the engine ECM has been replaced and an active regeneration has not been performed.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Diagnostic Codes that are Active

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 diagnostic trouble codes.

C. Check and record any diagnostic codes that are active or logged. Look for the following diagnostic codes:

1. E1239 (1) or 3750-31
2. E993 (3) or 3703-31
3. E1040 (2) or 3530-31

D. Wait at least 30 seconds in order for the diagnostic codes to become active.

Diagnostic code Result: A E1239 (1) or 3750-31 diagnostic code is present, proceed to Test Step 2.

Result: A E993 (3) or 3703-31 diagnostic code is present, proceed to Test Step 3.

Result: A E1040 (2) or 3530-31 diagnostic code is present, proceed to Test Step 4.

Result: A E1300 (1) or 3716-15 diagnostic code is present, proceed to Test Step 5.

Result: A E1301 (1) or 3712-15 diagnostic code is present, proceed to Test Step 6.

Result: A E1302 (1) or 3750-15 diagnostic code is present, proceed to Test Step 7.

Result: A E1305 (1) or 3483-11 diagnostic code is present, proceed to Test Step 8.

2. A E1239 (1) or 3750-31 Diagnostic Code is Present.

A. The operator did not allow enough time for regeneration to occur. The operator must respond when the DPF lamp is illuminated. Once the DPF and action lamp are illuminated, the operator must allow the engine to idle until the soot load is reduced to 50 percent .

Proper operation Result: Refer to the Operation and Maintenance Manual, “Caterpillar Regeneration System (CRS) Aftertreatment Switch” for the proper operation of the regeneration system.

Return the unit to service.

3. A E993 (3) or 3703-31 Diagnostic Code is Present.

A. The operator has disabled the regeneration system and a regeneration is necessary.

Disabled regeneration Result: Perform a regeneration. Refer to the Operation and Maintenance Manual, “Caterpillar Regeneration System (CRS) Aftertreatment Switch” for the proper operation of the regeneration system.

Return the unit to service.

4. A E1040 (2) or 3530-31 Diagnostic Code is Present.

A. The regeneration system is disabled by Cat ET.

Regeneration disabled by Cat ET. Result: Establish communication between Cat ET and the engine ECM. Set the value of the “Aftertreatment Regeneration Device” from “Disabled” to “Enabled”.

Return the unit to service.

5. Aftertreatment Regeneration Cannot Start Due To Low Engine Temperature

A. The engine temperature is too low for an aftertreatment regeneration.

Low engine temperature Result: Raise the coolant temperature above
40° C (104° F ) and the Diesel Particulate Filter inlet temperature above
50° C (122° F). If the ambient temperature is
-15° C (5° F) or below, the coolant temperature must be above
60° C (140° F) for an active regeneration to begin.

Perform a “Manual DPF Regeneration” using Cat ET.

Return the unit to service.

6. Aftertreatment Regeneration Cannot Start Due to System Fault

A. Establish communication between the Caterpillar Electronic Technician (ET) and the engine Electronic Control Module (ECM).

B. Check for active faults related to the ARD combustion air system, ARD fuel system, or ARD ignition system.

System Fault Result: Troubleshoot all active faults related to the ARD combustion air system, ARD fuel system, or ARD ignition system. Clear any active codes after correcting the faults. Activate regeneration.

Return the unit to service.

7. Aftertreatment Regeneration Cannot Start Due to Conditions Not Met

A. Check for the following conditions:

1. Soot load is too low (15%)
2. Soot load is too high (116% plus 10 minutes after getting a level 3 high soot warning)
3. Incorrect work mode conditions (parking brake is not set, transmission is not in neutral)
4. Engine speed and load conditions inhibit the forced regeneration request
5. Excessive DPF intake temperature. This can be caused by high engine speed and/or high load.
6. Regenerations are not disabled
7. For Industrial applications, Refer to the OEM wiring schematic to ensure that the CEM is wired correctly for automatic regenerations if applicable
8. An active derate, pressure based or temperature-based event codes
9. An ARD Nozzle Heater cycle was active when the Force Regeneration switch was pressed.

Unacceptable conditions Result: Correct any of the listed conditions. Activate regeneration.
For Industrial Applications: If an excessive DPF intake temperature is present, reduce engine speed and/or load and perform a low speed regeneration

Return the unit to service.

8. Initial Assembly Aftertreatment #1 Regeneration Required

A. Establish communication between the Caterpillar Electronic Technician (ET) and the engine Electronic Control Module (ECM).

B. Perform an ARD Ignition Test with Cat ET.

Test passed Result: The ARD Ignition Test was successful.

Return the unit to service.

Complete the procedure in the order in which the steps are listed.

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).

Posted in C18

Leave a Reply

Your email address will not be published. Required fields are marked *