3524B Engines for Off-Highway Trucks Caterpillar


E035 Loss of Coolant Flow Warning

Usage:

3524B 1AW
Conditions Which Generate This Code:

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

  • The engine has been running for at least 2 seconds.

  • Coolant flow is lost for at least 2 seconds.

  • The ground level shutdown switch has not been used in order to shut down the engine.

  • Engine speed is within 50 rpm of low idle.

System Response:

The ECM will log the warning. The warning is cancelled if coolant flow resumes for 1 second.

Possible Performance Effect:

  • None

Troubleshooting:

  • There may be a problem with the cooling system.

  • There may be a problem with the coolant flow switch.

  • There may be a problem with the ground level shutdown switch.

Test Step 1. Check for "ACTIVE" Diagnostic Codes

  1. Connect the Caterpillar Electronic Technician (ET) to the service tool connector.

  2. Turn the keyswitch to the ON position.

  3. Check for any Active Diagnostic Codes or Logged Diagnostic Codes.

Expected Result:

There should be no diagnostic codes that 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.

    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.

    If the problem is intermittent, refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors".

    Ensure that the repair eliminates the problem.

    STOP

  • Not OK -

    Repair: Repair the problem.

    Ensure that the repair eliminates the problem.

    STOP

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