CAMSHAFT GP 1397842 - Caterpillar

If the action alarm does not sound during this test or machine monitoring displays are not functioning, do not operate the machine until the cause has been corrected. Machine operation with faulty action alarms or displays could result in injury or death as any Warning Category 3 notifications will not be relayed to the operator.
To ensure the proper monitoring system operation, check the system daily.To check the monitoring system:
Turn the battery disconnect switch to the ON position.
Turn the start switch key to the ON position.The monitoring system will perform an automatic self-diagnostic test.The following systems are tested for approximately 1 second:
Indicators
Gauges
LCD displays
Action alarm
Verify that the following occurs:
Gauges go to the far right positions.
Indicators illuminate momentarily.
Segments of the LCD displays come on momentarily.
Action alarm sounds.
If all systems pass the self test, continue machine operation.If a system does not pass the self test, correct the problem before operating the machine.