853709 1 Mercury O-RING

Table 1
Diagnostic Trouble Codes
J1939 Code Code Description
(code descriptions may vary) Comments
3609-15 DPF #1 Intake Pressure : High - least severe (1) The code is logged.
Table 2
Associated Diagnostic Trouble Codes
3719-16
3719-0
3720-15
3720-16
Table 3
Troubleshooting Test Steps Values Results
1. Check for Associated Diagnostic Trouble Codes
A. Establish communication between the Caterpillar Electronic Technician (ET) and the engine Electronic Control Module (ECM).
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Determine if any of the codes in Table 2 are present.
Associated Diagnostic codes
Result: An associated diagnostic trouble code is not present.
Proceed to Test Step 2.
Result: An associated diagnostic trouble code is present.
Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.
If the problem is not resolved, proceed to Test Step 2.
2. Ash Service Maintenance
A. Determine the most recent cleaning or replacement of the Diesel Particulate Filter (DPF).
Cleaning interval
Result: The diesel particulate filter was cleaned or replaced within the last 5000 hours.
Proceed to Test Step 3.
Result: The diesel particulate filter was not cleaned or replaced within the last 5000 hours.
Proceed to Test Step 4.
3. Check for Contamination
A. Reset all active codes by using Cat ET.
B. Remove the DPF.
C. Check for contamination on the face of the DPF and the Diesel Oxidation Catalyst (DOC).
Contamination
Result: There is oil, fuel, or coolant on the DPF and/or the DOC.
Perform the following procedure:
1. Clean the DPF. Refer to the engines "Diesel Particulate Filter (DPF) Cleaner Manual" for the cleaning procedure.
2. Cleaning the DPF is not an ash service cleaning. Do not reset the engine ash model. The ash cannot be removed from the DPF if soot is present.
3. Reconnect the DOC and the DPF.
4. Start the engine. Run the engine at 1400 RPM with no load. Run the engine for at least 15 minutes or run the engine until there is no more white smoke.
If the 3609-15 diagnostic code remains active replace the DPF. Refer to Special Instruction, REHS8180, "Aftertreatment Filter Maintenance on Tier 4 Final Products Equipped with a Diesel Particulate Filter (DPF), Diesel Oxidation Catalyst (DOC) and a Selective Catalyst Reduction (SCR) Filter". Return the unit to service.
If the DOC needs to be replaced, refer to the Disassembly and Assembly manual for the correct procedure. Perform a DOC reset using Cat ET.
4. Perform an Ash Service
A. Reset all active codes by using Cat ET.
B. Clean the DPF. Refer to Special Instruction, REHS8180, "Aftertreatment Filter Maintenance on Tier 4 Final Products Equipped with a Diesel Particulate Filter (DPF), Diesel Oxidation Catalyst (DOC) and a Selective Catalyst Reduction (SCR) Filter". Refer to Systems Operation and Testing and Adjusting, "Diesel Particulate Filter - Clean" for the correct procedure.
C. Perform an "AFtertreatment System Functional Test" in Cat ET. Check for the 3609-15 diagnostic code.
Active codes
Result: There are no active diagnostic codes.
Return the unit to service.
Result: The 3609-15 diagnostic code is active.
Replace the DPF, refer to the Disassembly and Assembly manual for the correct procedure. Perform an "Aftertreatment System Functional Test" in order to verify that the problem is resolved.
Return the unit to service.
Complete the procedure in the order in which the steps are listed.