5034370 JOHNSON HOUSING, DRIVE SHAFT

Illustration 1 g00998008
Very low oil pressureSystem Response:The ECM will display "LOW OIL PRESSURE" and "DIAG" next to the status for "Engine Oil Pressure". The check engine lamp and the warning lamp will illuminate.Customer passwords are required to clear this diagnostic code.NoneTest Step 1. Check the Engine Oil Level
Check the engine oil level.Expected Result:The engine oil level is OK.Results:
OK - The engine oil level is OK. Proceed to Test Step 2.
Not OK - The engine oil level is low.Repair: Add engine oil to the proper level. Refer to the Operation and Maintenance Manual for more information.STOPTest Step 2. Verify Proper Sensor Installation
Check the installation of the engine oil pressure sensor.
Check the wiring of the engine oil pressure sensor. Refer to the Electrical Schematic for the proper wiring. Ensure that all of the wires and connectors are properly connected.Expected Result:The sensor is properly installed and the wiring is correct.Results:
OK - The sensor is properly installed. Proceed to Test Step 3.
Not OK - The sensor is not installed properly.Repair: Install the engine oil pressure sensor properly. Repair the wiring and/or the connectors to the sensor.Verify that the repair eliminates the problem.STOPTest Step 3. Check for Active Diagnostic Codes
Connect the Caterpillar Electronic Technician (Cat ET) to the data link connector.
Check for active diagnostic codes that are related to the barometric pressure sensor (atmospheric pressure) or to the boost pressure sensor.Expected Result:There are no diagnostic codes that are related to the barometric pressure sensor (atmospheric pressure) or to the boost pressure sensor.Results:
OK - There are no diagnostic codes. Proceed to Test Step 4.
Not OK - There is a diagnostic code that is related to the barometric pressure sensor (atmospheric pressure) and/or to the boost pressure sensor.Repair: Troubleshoot the diagnostic code before continuing with this procedure.STOPTest Step 4. Check the Status Screen
Turn the key