18117-84380 Suzuki VALVE, IAC

Table 1
Diagnostic Trouble Codes    
J1939 Codes    CDL Code    Code Description
(code descriptions may vary)    Comments    
3714-31     E992 (3)     DPF Active Regeneration Inhibited Due to Temporary System Lockout     The engine has been running for10 minutes after the E995 (3) code was activated.
The Cat ET Manual Diesel Particulate Filter Regeneration must be initiated.    
3715-31     E991 (3)     DPF Active Regeneration Inhibited Due to Permanent System Lockout     The estimated soot load is high. The engine may not operate properly. Factory passwords are required in order to clear this code.    
3719-0     E995 (3)     High DPF #1 Soot Loading     The estimated soot load is high. Engine operation is limited to 60 second intervals when the Caterpillar Electronic Technician (ET) is not communicating with the ECM.    
3719-16     E995 (2)     High DPF #1 Soot Loading     The estimated soot load is high. The ECM shuts down the engine when this code becomes active for the first time. The engine can be started and operated. Engine power is gradually derated as the soot load increases.    
Follow the troubleshooting procedure in order to determine the root cause of the problem.    Note: Engine operation must be kept to a minimum in order to minimize the amount of soot that is created. Follow the troubleshooting procedure in order to minimize the amount of engine operation.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps    Values    Results    
1. Active Codes and Logged Codes
A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM).
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Look for the following codes:
1. E995 (2) or 3719-16
2. E995 (3) or 3719-0
3. E991 (3) or 3715-31
4. E992 (3) or 3714-31
   
Codes
   
Result: A E991 (3) or 3715-31 code is present.
Proceed to Test Step 2.
Result: One of the following codes are present:
1. E995 (2) or 3719-16
2. E995 (3) or 3719-0
3. E992 (3) or 3714-31
Proceed to Test Step 3.
   
2. E991 (3) or 3715-31 code
A. The E991 (3) or 3715-31 code indicates that the engine has continued to run after repeated warnings and engine shutdowns. The DPF must be replaced. Refer to the Disassembly and Assembly, "Diesel Particulate Filter - Remove and Install (Clean Emissions Module)" for the correct procedure.
   
DPF
   
Result: A E991 (3) or 3715-31 code is present.
Repair: Replace the DPF. Refer to the Disassembly and Assembly, "Diesel Particulate Filter - Remove and Install (Clean Emissions Module)" for the correct procedure.
After the DPF has been replaced, clear the E991 (3) or 3715-31 code ( a factory password will be necessary) and proceed to Test Step 3
   
Table 3
Associated Diagnostic Trouble Codes    
E1045 (2)    
E1026 (2)    
E1025 (2)    
E993 (2)    
E1156 (1)    
E593 (2)    
E1239 (1)    
E1026 (1)    
E1300 (2)    
102-18    
3473-31    
3474-14    
3474-31    
3609-15    
3703-31    
3711-31    
3750-31    
3716-31    
Table 4
Troubleshooting Test Steps    Values    Results    
3. Associated Codes
A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM).
B. Check Cat ET for any associated codes that are listed in Table 3.
   
Associated Codes
   
Result: An associated code is active or logged.
Troubleshoot any codes that are present before continuing with this procedure.
Result: An associated code is not active or logged.
Proceed to Test Step 4.
   
Table 5
Troubleshooting Test Steps    Values    Results    
4. Current Flow through the Heating Element
A. Start the engine.
B. Check the current flow through the heating element. Refer to Systems Operation/Testing and Adjusting, "ARD Nozzle Heater (Current) - Test" for the correct procedure.
   
Current Flow
   
Result: The current flow is acceptable.
Proceed to Test Step 5.
Result: The current flow is not acceptable.
Repair: Refer to Troubleshooting, "ARD Nozzle - Test" for the correct procedure.
   
5. ARD Combustion Air Test
A. Perform the "ARD Air System Service".
   
Combustion Air Test
   
Result: The test results are unacceptable.
Repair: Refer to Troubleshooting, "ARD Combustion Air - Test" for information on the test, if necessary. Make the necessary repairs.
Result: The test results are acceptable.
Proceed to Test Step 6.
   
6. Manual DPF Regeneration
Do not use the cab switch for a stationary regeneration. The service tests provide enhanced diagnostics that are necessary for proper troubleshooting and repair.
A. Start a "Manual DPF Regeneration" in Cat ET.
   
Manual DPF Regeneration
   
Result: The "Manual DPF Regeneration