REGULATOR AS 5N8002 - Caterpillar

Illustration 1 g00979405
System Response:The ECM will log the warning. The ECM will transmit a warning to the display in the cab. The ECM will reset the warning when the fuel pressure is above the reset line in Illustration 1 for four seconds.
Low powerThis event indicates a restriction in the fuel filter. This does not represent a problem with the ECM.Test Step 1. Check for Diagnostic Codes.
Connect the electronic service tool to the service tool connector.
Turn the keyswitch to the ON position. The engine should be off.
Check the electronic service tool for any active diagnostic codes or logged diagnostic codes.Expected Result:There should be no diagnostic codes that are present.Results:
OK - Proceed to Test Step 2.
Not OK - 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.STOPTest Step 2. Perform a Check of the Fuel System.
Perform a check of the fuel system. Refer to Testing and Adjusting for possible causes.Expected Result:There are no problems with the fuel system.Results:
OK - There may be an intermittent problem.Repair: Monitor the operation of the engine.Repair the problem.Ensure that the repair eliminates the problem.STOP
Not OK - Repair: Repair the problem.Ensure that the repair eliminates the problem.STOP