TUBE AS 2059916 - Caterpillar

Illustration 1 g02233573
Overview of the ARD combustion head (1) Flame detection temperature sensor (2) ARD nozzle heater (3) Pilot fuel (4) Pilot filter connector (5) ARD combustion head (6) Combustion air inletTest Step 1. Check for Associated Diagnostic Trouble Codes
Connect the electronic service tool to the diagnostic connector.
Table 2 lists the diagnostic trouble codes that are associated with diagnostic trouble code E593-2 Aftertreatment Insufficient Temperature to Complete Regeneration. Determine if any of the codes in Table 2 are present.
Table 2
Associated Diagnostic Trouble Codes    
CDL Code    Failure Mode Identifier (FMI)    
E1041     2    
E1045     2    
E1050     2    
E1052     2    
E1070     1    Results:
An associated diagnostic trouble code is not present. - Proceed to Test Step 2.
An associated diagnostic trouble code is present. - Repair: Troubleshoot the associated diagnostic code. Refer to Troubleshooting, "Diagnostic Trouble Codes".STOPTest Step 2. Check the Current Flow Through the Nozzle Heater
Verify that the engine is off.
Illustration 2 g02231793
Measuring the current flow (9) ARD combustion head (10) Metal part of heater wire (11) Insulated part of heater wire
Connect a suitable clamp-ammeter around the insulated part of the heater wire (11). Make sure that the jaws of the ammeter are away from the metal part of the heater wire (10) .
Establish communication between the electronic service tool and the ECM. Refer to Troubleshooting, "Electronic Service Tools" for the proper procedure.
The ignition system may cause an electrical shock hazard, which may cause personal injury or death. Avoid contacting the ignition system components and the ignition system wiring during operation.
Start the engine. Activate the "ARD Nozzle Heater Test".
Record the current reading on the ammeter.
Disable the "ARD Nozzle Heater Test". Stop the engine. Remove the clamp-ammeter.
Disconnect the electronic service tool.Expected Result:The current flow is above 3.5 Amps for a 24 VDC system.Results:
The current flow is above the minimum amount. - The current flow is OK. Proceed to Test Step 3.
The current flow is below the expected amount for the appropriate system voltage. - The current flow is low.Repair: Determine the cause of the low current flow. Refer to Troubleshooting, "ARD Nozzle Heater - Test".STOPTest Step 3. Perform a Combustion Air Test
Use the electronic service tool in order to perform the ARD Air System Service Test.Expected Result:The ARD Air System Service Test completed successfully.Results:
The test completed successfully. - Proceed to Test Step 4.
The test did not complete successfully. Also, there are associated diagnostic trouble codes. - Repair: Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to diagnose the associated diagnostic trouble codes.STOPTest Step 4. Perform a Service RegenerationNote: This test must be performed through the electronic service tool. The electronic service tool enhances the diagnostics during the service test. The test duration can be up to 40 minutes.
Start a Service Regeneration by selecting the following menus on the electronic service tool:
"Service"
"Service Procedures"
"Manual Diesel Particulate Filter Regeneration"The electronic service tool will display a "Waiting On Requirements" window. The ECM will automatically elevate the engine speed.The duration of the Service Regeneration depends on