CIRCUIT BREAKER AS 2781612 - Caterpillar

Which Generate This Code:The Electronic Control Module (ECM) detects all of the following conditions:
Air inlet temperature is equal to 75 °C (167 °F) or greater than 75 °C (167 °F) for more than four seconds.
The engine has been running more than three minutes. This three minute delay begins once the engine speed is above zero rpm.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 air inlet temperature is less than 73 °C (163 °F) for more than four seconds.
Low power
There may be a problem with the aftercooler.
There may be a problem with the air inlet temperature sensor.Test Step 1. Check for Diagnostic Codes
Connect the Caterpillar Electronic Technician (Cat ET) to the service tool connector.
Turn the keyswitch to the ON position. The engine should be off.
Check for any active diagnostic codes or logged diagnostic codes.Expected Result:No diagnostic codes 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 Aftercooler
Perform a check of the aftercooler. Refer to the appropriate topic in Testing and Adjusting for possible causes.Expected Result:There are no problems with the aftercooler.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