2398819 - K27 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT

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Results of the tests
1CHECK ON RADIATORAll OKProblems metOperation
1.3 JTD 16v

Check the condition of the radiator. In particular:

  • There should not be distortions or irregularities
  • There should not be dirt
Continue to Step 2Radiator distortedReaplce the radiator Op.   1088B20 
Radiator dirtyClean the radiator
1.3 JTD 16v

Check the condition of the radiator. In particular:

  • There should not be distortions or irregularities
  • There should not be dirt
Continue to Step 2Radiator distortedReaplce the radiator Op. 1088B24
Radiator dirtyClean the radiator
2INSTRUMENT PANEL OPERATION CHECKAll OKProblems metOperation
Disconnect the water temperature sensor and check that the gauge goes down to the minimum valueContinue to Step 3Gauge stuck at maximum temperatureRestore the correct connections See   E4010  INSTRUMENT PANEL If necessary, replace the instrument panel Op. 5560B11
3FAN CYCLE CHECKAll OKProblems metOperation
1.2 16v 1.4 16vCheck that the fan cycle is correctContinue to Step 4Fans not workingContinue according to the instructions for the See table   K29  ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
Fans operate at the wrong temperature: control unit and panel readings consistentRestore the correct connections with the control unit See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT If necessary, replace it Op.   1056B82 
Fans operate at the wrong temperature: readings not consistentRestore the correct connections with the instrument panel See   E4010  INSTRUMENT PANEL If necessary, replace it Op. 5560B11
1.3 JTD 16v 1.9 JTD 8vCheck that the fan cycle is correctContinue to Step 4Fans not workingContinue according to the instructions for the See table   K29  ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
Fans operate at the wrong temperature: control unit and panel readings consistentRestore the correct connections with the control unit See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT If necessary, replace it Op.   1060G80 
Fans operate at the wrong temperature: readings not consistentRestore the correct connections with the instrument panel See   E4010  INSTRUMENT PANEL If necessary, replace it Op. 5560B11
4COOLING SYSTEM LEAKAGE CHECKAll OKProblems metOperation
Carry out the cooling system leak test Op.   0510C30  Continue to Step 5Coolant leaks detectedContinue according to the instructions for the See table   X10  ENGINE COOLANT LEAKS
5BUBBLING CHECKAll OKProblems metOperation
Check that there fluid in the coolant reservoir is not bubblingContinue to Step 6Presence of fluid bubbling: cylinder head gasket damagedReplace the seal Op.   1016C10 
6HEAD HYDRAULIC LEAKAGE TESTAll OKProblems metOperation
Check the hydraulic seal of the cylinder headContinue to Step 7Seal ineffectiveReplace the cylinder head Op. 1016C20
7MONOBLOC HYDRAULIC SEAL TESTAll OKProblems metOperation
Check the hydraulic seal of the monoblocContinue to Step 8Seal ineffectiveReplace engine block Op. 1012A10
8CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosis.