PUMP GP-AUXILIARY SEA WATER 5N9357 - Caterpillar

Probable Causes
Active codes and logged codes
Incorrect parameters
Accessory and/or parasitic loads
Incorrect flash file
Restriction in the air inlet and exhaust system
Proper operation of the turbocharger
Low-pressure fuel system
Fuel injectorsRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
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). 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.
Troubleshoot any active codes before continuing with this procedure.
Codes
Result: There are active codes.
Troubleshoot any active codes before continuing with this procedure.
Result: There are no active codes.
Proceed to Test Step 2.
2. Incorrect Parameters
A. Use Cat ET to verify that the correct engine parameters are being used. Refer to Troubleshooting, "Configuration Parameters" for additional information.
B. Verify that all the parameters for parasitic loads are correct.
Parameters
Result: The parameters are configured correctly.
Proceed to Test Step 3.
Result: The parameters are not configured correctly.
Correctly configure the parameters.
Verify that the repair eliminated the problem.
3. Accessory and/or Parasitic Loads
A. Check all accessory equipment for problems that may create excessive load on the engine.
B. Check for any excess parasitic load on the engine.
Parasitic loads
Result: There is not an excessive load on the engine.
Proceed to Test Step 4.
Result: There is an excessive load on the engine.
Diagnose the problem and then repair the problem.
Verify that the repair eliminated the problem.
4. Incorrect Flash File
A. Verify that the latest flash file is installed in the Electronic Control Module (ECM). Refer to Troubleshooting, "ECM Software - Install" for the proper procedure.
Flash file
Result: The latest flash file is installed in the ECM.
Proceed to Test Step 5.
Result: The latest flash file is not installed in the ECM.
Install the latest flash file. Verify that the repair eliminated the problem.
5. Restriction in the Air Inlet and Exhaust System
A. Check the air filter restriction indicator, if equipped. Clean plugged air filters or replace plugged air filters. Refer to the Operation and Maintenance Manual.
B. Check the air inlet and exhaust system for restrictions and/or leaks.
Restrictions
Result: There are restrictions in the air inlet or exhaust system.
Make the necessary repairs, Verify that the repair eliminated the problem.
Result: There are no restrictions in the air inlet or exhaust system.
Proceed to Test Step 6.
6. Proper Operation of the Turbocharger
A. Check for proper operation of the turbocharger.
Turbocharger
Result: The turbocharger is operating properly.
Proceed to Test Step 7.
Result: The turbocharger is not operating properly.
Repair or replace the turbocharger. Verify that the repair eliminated the problem.
7. Fuel Injectors
Note: 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"