125000593 - K27 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT

Results of the tests
1CHECK ON RADIATORAll OKProblems metOperation
2.0 JTS3.2 V61.9 JTD 16VHeater

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.    Op. 1088B20 ENGINE COOLING RADIATOR - R + R
Radiator dirtyClean the radiator
2.0 JTS3.2 V61.9 JTD 16VAir ConditionerThere should not be distortions or irregularitiesThere should not be dirtContinue 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    See E4010 INSTRUMENT PANEL. If necessary, replace the instrument panel Op.    Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
3FAN CYCLE CHECKAll OKProblems metOperation
1.9 JTD 16VCheck that the fan cycle is correctContinue to Step 4Fans not workingContinue according to the instructions inSee table    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    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT. If necessary, replace it Op.    Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R
Fans operate at the wrong temperature: readings not consistentRestore the correct connections with the instrument panel See    See E4010 INSTRUMENT PANEL. If necessary, replace it Op.    Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
2.0 JTSCheck that the fan cycle is correctContinue to Step 4Fans not workingContinue according to the instructions inSee table    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    See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT. If necessary, replace it Op. 1056F82
Fans operate at the wrong temperature: readings not consistentRestore the correct connections with the instrument panel See    See E4010 INSTRUMENT PANEL. If necessary, replace it Op.    Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
3.2 V6Check that the fan cycle is correctContinue to Step 4Fans not workingContinue according to the instructions inSee table    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    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    See E4010 INSTRUMENT PANEL. If necessary, replace it Op.    Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
4COOLING SYSTEM LEAKAGE CHECKAll OKProblems metOperation
Check the cooling system for leaks Op.    Op. 0510C30 COOLING SYSTEM - TIGHTNESS TESTContinue to Step 5Coolant leaks detectedContinue according to the instructions inSee table    See table X10 ENGINE COOLANT LEAKS
5BUBBLING CHECKAll OKProblems metOperation
1.9 JTD 16VCheck that there fluid in the coolant reservoir is not bubblingContinue to Step 6Presence of fluid bubbling: cylinder head gasket damagedReplace the seal Op. 1016B10
2.0 JTSCheck that there fluid in the coolant reservoir is not bubblingContinue to Step 6Presence of fluid bubbling: cylinder head gasket damagedReplace the seal Op.    Op. 1016C10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
3.2 V6Check that there fluid in the coolant reservoir is not bubblingContinue to Step 6Presence of fluid bubbling: cylinder head gaskets damagedReplace the gaskets Op. 1016D11
6HEAD HYDRAULIC LEAKAGE TESTAll OKProblems metOperation
1.9 JTD 16V2.0 JTSCheck the hydraulic seal of the cylinder headContinue to Step 7Seal ineffectiveReplace the cylinder head Op. 1016C20
3.2 V6Check the hydraulic seal of the cylinder headsContinue to Step 7Seal ineffectiveReplace the cylinder heads Op. 1016D30
7MONOBLOCK HYDRAULIC SEAL TESTAll OKProblems metOperation
CHECK ON BLOCK HYDRAULIC SEALContinue to Step 8Seal ineffectiveSeal ineffective Op.    Op. 1004E20 ENGINE - DISMANTLE AND RE-BUILD FOLLOWING OPERATION 1004E10 - WASH AND CHECK DISMANTLED PARTS - RE-FIT CYLINDER HEAD AND OIL SUMP - DOES NOT INCLUDE REPAIRS TO CYLINDER HEAD AND AUXILIARY UNIT
8CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis.