Carry out a preliminary check on the engine coolant level

Then check:

• regular engagement of cooling fan
• engine oil level
• condition of water pump drive belt

Move onto step 1

• Top up the engine coolant level Op. 1088A10

End of diagnosis

Move onto step (see D31)

• Replace the belt Op. 1092G10

End of diagnosis

• Top up the engine oil level Op. 1084A10

End of diagnosis

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 reading

Move onto step 2

Move onto step (see K25)

Start up the engine and visually check that there are no air bubbles in the expansion tank

Move onto step 3

• Eliminate the air from the cooling circuit

End of diagnosis

Check:

• that the cylinder head tightening is correct
• the gasket seal

Move onto step 4

• Restore correct tightening

End of diagnosis

• Replace the gasket Op. 1016C11

End of diagnosis

Check:

• that the cylinder head tightening is correct
• the gasket seal

Move onto step 4

• Restore correct tightening

End of diagnosis

• Replace the gasket Op. 1016D11

End of diagnosis

Check:

• the condition of the thermostat group

Move onto step 5

• Replace the thermostat group Op. 1088C40

End of diagnosis

Check the condition and seal of the pipes. In particular:

• no obstructions
• condition of hoses, connectors and plugs

Move onto step 6

• Restore the correct tightening or replace the components involved (see Assembly 1088D)

End of diagnosis

Check the condition of the radiator

Move onto step 7

• Reaplce the radiator Op. 1088B24

End of diagnosis

Check:

• the condition of the water pump
• the seal of the gaskets

Move onto step 8

• Replace the water pump or Op. 1088C12

End of diagnosis

Check that the fault is no longer present

End of diagnosis

Incorrect selection of diagnostic procedure