The Electronic Control Module (ECM) detects all of the following conditions:
- The engine has been running for at least 1 second.
- Oil level is low for 3 seconds.
System Response:
The ECM will log the event. The status of the engine oil is set low. If the oil level recovers for 0.5 seconds, the status becomes okay.
- None
Test Step 1. Check for "ACTIVE" Diagnostic Codes.
- Connect the Caterpillar Electronic Technician (ET) to the service tool connector.
- Turn the keyswitch to the ON position. The engine should be OFF.
- Check for any Active Diagnostic Codes.
Expected Result:
There should be no diagnostic codes that are present.
Results:
- OK - There are no diagnostic codes that are present. Proceed to test step 2.
- Not OK - There are diagnostic codes that are present.
Repair: Repair the diagnostic codes that are present. Refer to the appropriate topic in the "Troubleshooting With a Diagnostic Code" section of this manual. Ensure that the repair eliminates the problem.
Stop.
Test Step 2. Perform a Check of the Lubrication System.
- Turn the keyswitch to the OFF position.
- Allow the engine to cool down.
- Check the level of the engine oil.
Expected Result:
The engine oil should be low.
Results:
- OK - The engine oil is low.
Repair: Add engine oil to the engine.
Stop.
- Not OK - The engine oil level is correct.
Repair: There may be an intermittent problem with the oil level switch. Check for logged diagnostic codes for the oil level switch. If the problem is intermittent, refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors".
Stop.