The Electronic Control Module (ECM) detects the following condition:
- Exhaust inlet temperature is greater than the default temperature of
750 °C (1382 °F) for 15 seconds. - The engine has been running for 3 seconds.
- The diagnostic codes CID-FMI 827-08 and CID-FMI 828-08 are not active.
System Response:
The ECM will log the event. The ECM derates the engine at 15 second intervals in 2% increments when the exhaust inlet temperature is above
Possible Performance Effect:
- Low power
Troubleshooting:
- There may be an exhaust restriction.
- There may be an air leak.
- The operator may be operating the machine improperly.
Test Step 1. Check for "ACTIVE" Diagnostic Codes.
- Start the Caterpillar Electronic Technician (ET).
- Turn the main power to the ON position.
- Check for any Active Diagnostic Codes or Logged 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 Cooling System.
- Perform a check of the exhaust system. Refer to the diagnostic procedure Troubleshooting, "Exhaust Temperature is Too High" for possible causes.
Expected Result:
There are no problems with the exhaust 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 exhaust system.
Repair: Repair the problem. Ensure that the repair eliminates the problem.
STOP