HOSE AS 9W0346 - Caterpillar

System Operation Description: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
CDL Code J1939 Code Code Description
(code descriptions may vary) Comments
E593 (2) 3711-31 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. Illustration 1 and Illustration 2 show the location of the components for the ARD system.
Illustration 1 g01985013
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
Illustration 2 g02225997
CEM (typical)
(7) Combustion air valve
(8) Combustion air valve inlet
(9) Combustion air actuator
(10) ARD ignition coil
(11) Combustion air absolute pressure sensor
(12) Combustion air valve controller
(13) Differential pressure sensor
(14) Fuel filter fitting
(15) Cable for CEM connection to the engine
(16) Pilot fuel control valve
(17) Main fuel control valve
(18) Pilot fuel pressure sensor
(19) Main fuel pressure sensor
(20) Combustion air piping
(21) ARD combustion head
(22) Combustion air inlet to ARD combustion head
Table 2
Associated Diagnostic Trouble Codes
102-18
2489-13
3487-13
3480-15
3480-16
3480-17
3480-18
3556-7
4077-15
4077-16
4077-17
4077-18
E1050
E1051
E1052
E1053
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 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.
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 - 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
The current flow is between 7.0 A and 14 A for a 12 V system. Or, the current flow is 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.
There may be a problem with the ARD nozzle. Refer to Troubleshooting, "ARD Nozzle - Test".
3. Inspect the Tubing between the Compressor and the Combustion Air Valve
A. Inspect the tube between the compressor and the combustion air valve.
B. Check for cracks in the tubing.
C. Check for loose hardware or damaged hardware.
Tubing
Result: The tube is not damaged or cracked.
Proceed to Test Step 4.
Result: The tube is damaged or cracked.
Repair: