2888342 - D32 ELECTRIC FAN COMES ON TOO OFTEN

The cooling fan comes on at a higher rate than normal (taking into account environmental and driving conditions)
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

Preliminarily check:

  • engine coolant level
  • radiator cleanliness and condition
Continue to Step 1Insufficient engine coolant levelTop up the engine coolant level If the defect persists, See table   X10 
Radiator dirty, damaged or deformedClean the radiator. If necessary, replace it Op. 1088B24
1CHECK ENGINE OIL LEVELAll OKProblems metOperation
Check engine oil levelContinue to Step 2Engine oil level too lowTop up the engine oil level Op.   1084A10 
2CHECK FUEL FILLER CAPAll OKProblems metOperation
Check the condition of the expansion tank, and the cap seal in particularContinue to Step 3Cap faulty Repair or replace the cap Op. 1088A10
3TEMPERATURE GAUGE OPERATION CHECKAll OKProblems metOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket (in the engine management control unit ambient): read the engine temperature value shown amongst the parameters and compare it with the instrument readingContinue to Step 4Values do not agree, instrument reading faultySee table   K26 
4CHECK COOLANT TEMPERATURE SENSORAll OKProblems metOperation
1.6 16vCheck that the engine coolant temperature sensor is working: See Test   1056C  Checking engine coolant temperature sensor operation Continue to Step 5Sensor faultyReplace temperature sensor Op.   1056B50 
Connections not correctRestore the connections ( See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT )
Engine management control unit faultyCarry out a thorough check on the control unit (using diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine control unit Op.   1056B82 
1.9 JTD 8VCheck that the engine coolant temperature sensor is working: See Test   1060E  Checking engine coolant temperature sensor operation Continue to Step 5Sensor faultyReplace temperature sensor Op.   1060G14 
Connections not correctRestore the connections ( See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT )
Engine management control unit faultyCarry out a thorough check on the control unit (using diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine control unit Op.   1060G80 
5CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'