INJECTOR GP- 3282581 - Caterpillar

Table 1 lists the diagnostic codes that relate to the combustion air system.
Table 1
J1939 Code and Description CDL Code and Description Comments
3474-14
Aftertreatment #1 Loss of Combustion : Special Instruction E1026 (1)
Aftertreatment #1 Loss of Combustion The Aftertreatment Regeneration Device (ARD) has stopped generating heat at least four times during an active high-speed regeneration.
Associated codes may indicate the system that caused the loss of combustion to occur.
The code must be cleared with the "Reset All" button on the active diagnostics screen in Cat® Electronic Technician (ET). If an active regeneration is initiated with the operator forced regeneration switch, the Engine Control Module (ECM) clears this code automatically.
3474-31
Aftertreatment #1 Loss of Combustion E1026 (2)
Aftertreatment #1 Loss of Combustion The ARD has stopped generating heat at least four times during an active regeneration.
Associated codes may indicate the system that caused the loss of combustion to occur.
The code must be cleared with the "Reset All" button on the active diagnostics screen in Cat ET. If an active regeneration is initiated with the operator forced regeneration switch, the ECM clears this code automatically.
Table 2
Associated Diagnostic Trouble Codes
J1939 Code CDL Code
102-18 E1045
3480-15 or -16 E1050
3480-17 or -18 E1052
3487-7 E1041 (1)
4077-15 or -16 E1051
4077-17 or -18 E1053 Note: The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.
Table 3
Troubleshooting Test Steps Values Results
1. Check for Associated 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. If troubleshooting an E1026 or 3474 code, access the "Aftertreatment Regeneration History" in Cat ET.
1. Click the "Information" tab.
2. Click "History".
2. Click "Aftertreatment Regeneration History".
Note: If there were three successful regenerations since the code was logged, do not troubleshoot this code. Clear the code and return the unit to service.
Associated Code
Result: An associated code is not present.
Proceed to Test Step 2.
Result: An associated code is present.
Repair: Refer to the appropriate troubleshooting procedure for the associated code.
2. Check the Current Flow Through the Heater
A. Verify that the engine is off.
B. 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.
B. Use Cat ET to perform an "ARD Air System Service