3406E and 3456 Generator Set Engines Caterpillar

The Electronic Control Module (ECM) detects all of the following conditions:

• The fuel temperature is greater than 75 °C (167 °F) for at least 10 seconds.

• The engine has been running at least 30 seconds. This 30 second delay begins once the engine speed is greater than zero rpm.

• 174-03 is not active.

• 174-04 is not active.

System Response:

The ECM will log the warning. The warning lamp will come on and the warning will be transmitted to the display. The ECM will reset the warning once the fuel temperature falls to 72 °C (162 °F) for 10 seconds.

Troubleshooting:

Test Step 1. PERFORM A CHECK OF THE FUEL SYSTEM

1. Perform a check of the fuel system. Refer to the appropriate topic in 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 - There is a problem with the fuel system.

  Repair: Repair the problem.

  Ensure that the repair eliminates the problem.

  STOP