3512B Petroleum Engines with the ADEM 2 Electronic Control Module E173 High Exhaust Temperature Warning Caterpillar


E173 High Exhaust Temperature Warning
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3512B Petroleum Engines with the ADEM 2 Electronic Control Module [SENR5079]

Conditions Which Generate This Code:

The Electronic Control Module (ECM) detects the following condition:

  • Exhaust inlet temperature is greater than the default temperature of 750 °C (1382 °F) for 5 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 warning is active when the exhaust inlet temperature is above 750 °C (1382 °F) for 5 seconds. After the temperature returns below 740 °C (1364 °F) the warning will become inactive. If the exhaust inlet temperature exceeds the trip point for a second time a new warning will take effect.

  • None

  • There may be an exhaust restriction above recommended levels.

  • There may be a problem with the cooling system.

  • There may be a problem with the coolant temperature sensor.

Test Step 1. Check for "ACTIVE" Diagnostic Codes.

  1. Start the AVSpare Electronic Technician (ET).

  1. Turn the main power to the ON position.

  1. 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.

  1. Perform a check of the cooling system. Refer to the diagnostic procedure Troubleshooting, "Coolant Temperature is Too High" for possible causes.

Expected Result:

There are no problems with the cooling 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 cooling system.

    Repair: Repair the problem. Ensure that the repair eliminates the problem.

    STOP

Information System:

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