199002602 - K027 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT

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Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
Check that the engine oil level is correct    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly by carrying out the    See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECKCheck the condition of the fuel supply circuit and make sure that it is working properly carrying out the    See Test 1040OA FUEL SUPPLY CIRCUIT CHECKCheck the operation of the low pressure supply circuit by carrying out the    See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECKMove on to Step 1Oil level incorrectRestore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1AMBIENT PARAMETERS CHECKAll OKProblems encounteredOperation
Select the following control unit at the diagnostic equipment: Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9)Check the value of the following parameters:. Battery voltage    See Test 5530BB BATTERY VOLTAGE CHECK. Atmospheric pressure    See Test 1060GD ATMOSPHERIC PRESSURE CHECK. Supercharging pressure Target. Supercharging pressure Measured    See Test 1060GF SUPERCHARGING PRESSURE CHECK. Engine coolant temperature    See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK. Diesel temperature    See Test 1060EA DIESEL TEMPERATURE CHECK. Objective Diesel pressure. Measured Diesel pressure    See Test 1060GH DIESEL PRESSURE CHECK. Engine rpm    See Test 1060GI CHECK ENGINE SPEEDMove on to Step 2
2RADIATOR CHECKAll OKProblems encounteredOperation

Check radiator conditions. More specifically:

  • No deformations or faults should be present;
  • No dirt should be present
Move on to Step 3Radiator distortedReplace the radiator    Op. 1088B20 ENGINE COOLING RADIATOR - R + R
Radiator dirtyClean the radiator
3CHECK INSTRUMENT PANEL OPERATIONAll OKProblems encounteredOperation
Disconnect the coolant temperature sensor and check that the gauge drops to the minimum valueMove on to Step 4Gauge locked at maximum temperatureRestore the correct connections See    See E4010 INSTRUMENT PANEL Replace control panel if necessary    Op. 5560B10 CONTROL PANEL - R+R
4CHECK FAN CYCLEAll OKProblems encounteredOperation
Check the fan cycle is correctMove on to Step 5Fans not workingContinue following the instructions in the tableSee table K029 ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
Fans operate at incorrect temperature: control unit and panel readings consistentRestore the correct connections with the control unit See    See E5020 ENGINE COOLING If necessary, replace it    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
Fans operate at incorrect temperature: readings inconsistentRestore the correct connections See    See E4010 INSTRUMENT PANEL Replace control panel if necessary    Op. 5560B10 CONTROL PANEL - R+R
5COOLING SYSTEM LEAKAGE TESTAll OKProblems encounteredOperation
Check the seal of the cooling system    Op. 0510C30 ENGINE COOLING SYSTEM - LEAKAGE TEST Move on to Step 6Coolant leaks foundProceed as instructed in the table    See table X010 ENGINE COOLANT LEAKS
6CHECK NO GURGLING IS PRESENTAll OKProblems encounteredOperation
Check there is not gurgling in the coolant reservoirMove on to Step 7Presence of fluid or air bubbles: cylinder head damagedReplace the gasket    Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
7CYLINDER HEAD HYDRAULIC SEAL CHECKAll OKProblems encounteredOperation
Check the hydraulic seal of the cylinder headMove on to Step 8Seal not efficientRemove the cylinder head    Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
8MONOBLOC HYDRAULIC SEAL CHECKAll OKProblems encounteredOperation
Check the hydraulic seal of the monoblocEnd of diagnosisSeal not efficientReplace the monobloc