846540 Volvo.Penta Disc

Probable Causes
Codes
Cold mode (if applicable).
Starting aids (if applicable)
Flash file
Cooling system
Fuel supply
Fuel injection
TurbochargerRecommended Actions
Table 1
Troubleshooting Test Steps Values Results
1. Check for Active Codes and Logged Codes
A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM) . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Monitor the diagnostic codes on Cat ET. Determine if a code is active or logged.
Note: Wait at least 30 seconds in order for diagnostic codes to become active.
Codes
Result: A code is active or logged.
Repair: Troubleshoot any codes before continuing with this procedure.
Verify that the repair eliminated the problem.
Result: A code is not active or logged.
Proceed to Test Step 2.
2. Check for Cold Mode Operation (if applicable)
During cold mode operation, condensation may be present and is normal.
A. Cold mode is activated whenever the engine coolant temperature falls below a predetermined value. Monitor the status screen on Cat ET to verify that the engine has exited cold mode. Observe the reading for coolant temperature on the Cat ET.
Cold Mode
Result: The engine is operating in cold mode.
Repair: This is normal operation. Return the engine to service.
Result: The engine is not operating in cold mode.
Proceed to Test Step 3.
3. Check the Starting Aids (If Applicable)
A. If cold ambient conditions exist, check operation of starting aids. Verify that the starting aid is operating correctly. Refer to the appropriate circuit test for information that is related to troubleshooting the starting aid.
If ether bottles are not installed, check the configuration screen on Cat ET to verify that ether is not enabled.
Starting Aid
Result: The starting aid is operating correctly.
Proceed to Test Step 4.
Result: The starting aid is not operating correctly.
Repair: Make the necessary repairs.
Verify that the repair eliminated the problem.
4. Ensure that the latest Flash File is Installed on the ECM
A. Verify that the latest flash file is installed in the ECM. Refer to Troubleshooting, "ECM Software - Install" for the proper procedure.
Flash file
Result: The latest flash file is installed.
Proceed to Test Step 5.
Result: The latest flash file is not installed.
Repair: Install the latest flash file.
Verify that the repair eliminated the problem.
5. Inspect the Cooling System
A. Check for an internal coolant leak into the cylinder and/or the exhaust. Refer to Systems Operation/Testing and Adjusting, "Cooling System".
Internal Coolant Leak
Result: There is an internal coolant leak.
Repair: Make the necessary repairs.
Verify that the repair eliminated the problem.
Result: There is not an internal coolant leak.
Proceed to Test Step 6.
6. Check for an Unstable Fuel Supply
A. Visually check the fuel level in the fuel tank. Do not rely on the fuel gauge only.
B. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.
C. Inspect the fuel system. Refer to Systems Operation/Testing and Adjusting, "Fuel System - Inspect" for additional information.
Cold weather adversely affects the characteristics of the fuel. Refer to the engines Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold-weather operation.
D. Check fuel quality. Check the fuel tank for debris or foreign objects which may block the fuel supply.
E. Check the filtered fuel pressure while the engine is being cranked. Refer to Troubleshooting, "Fuel Pressure Is Low" for the proper testing procedure.
Fuel System
Result: The fuel system is operating properly.
Proceed to Test Step 7.
Result: The fuel system is not operating properly.
Repair: Make the necessary repairs.
Verify that the repair eliminated the problem.
7. Test the Fuel Injectors
If service has been performed on the engine fuel system recently, verify that the injector trim files are correct. Use Cat ET to check that the injector trim files are correct for the injectors that are installed on the engine.
A. Perform the "Injector Solenoid Test" on Cat ET to determine if all the injector solenoids are being energized by the ECM.
B. Access the "Cylinder Cutout Test" in the "Diagnostic Tests" under the "Diagnostics" menu.
C. Perform the "Automatic Cylinder Cutout Test" on Cat ET.
Fuel Injector
Result: The test was successful.
Return the unit to service.
Result: The test was not successful.
Repair: Diagnose the problem and then repair the problem.
Reset all active codes and clear all logged codes.
Verify that the repair eliminated the problem.
8. Inspect the Turbocharger Oil Seal
A. Remove the exhaust outlet piping from the turbocharger.
B. Visually inspect the piping for the presence of oil. Refer to Operation and Maintenance Manual, "Turbocharger-Inspect" for additional information.
Seal
Result: There is an oil leak.
Repair: Repair or replace the damaged turbocharger components.
Verify that the repair eliminated the problem.
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).