2582387 - D37 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT / WITHOUT VISIBLE VAPOUR VENTING
-| Results of the tests | ||||
| 1 | RADIATOR CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
Check the condition of the radiator In particular:
| Continue to Step 2 | Radiator deformed | Replace the radiator Op. 1088B20 | |
| Radiator dirty | Clean the radiator | |||
| 1.9 JTD | Check the condition of the radiator In particular:
| Continue to Step 2 | Radiator deformed | Replace the radiator Op. 1088B24 |
| Radiator dirty | Clean the radiator | |||
| 2 | CHECK ON CAP SEAL | All OK | Problems met | Operation |
| Check the radiator cap for leaks | Continue to Step 3 | Cap faulty | Replace the radiator cap Op. 0010T21 | |
| 3 | CHECK ON COOLANT LEVEL | All OK | Problems met | Operation |
| Check the level of the coolant Op. 0010T21 Find out from the customer whether the problem has occurred previously | Continue to Step 4 | Level too low | Restore the correct coolant level Op. 0010T21 . If the fault has already occurred previously, | |
| 4 | INSTRUMENT PANEL OPERATION CHECK | All OK | Problems met | Operation |
| Disconnect the water temperature sensor and check that the gauge goes down to the minimum value | Continue to Step 5 | Gauge stuck at maximum temperature | Restore the correct connections See E4010 INSTRUMENT PANEL . If necessary, replace the instrument panel | |
| 5 | FAN CYCLE CHECK | All OK | Problems met | Operation |
| 1.2 8v | Check that the fan cycle is correct | Continue to Step 6 | Fan not working | See table D36 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT |
| Fan operates at the wrong temperature: control unit and panel readings consistent | Restore the correct connections with the control unit See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT . If necessary, replace it | |||
| Fan operates at the wrong temperature: readings not consistent | Restore the correct connections with the instrument panel See E4010 INSTRUMENT PANEL . If necessary, replace it | |||
| 1.9 DIESEL | Check that the fan cycle is correct | Continue to Step 6 | Fan not working | See table D36 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT |
| Fan operates at the wrong temperature: control unit and panel readings consistent | Restore the correct connections with the control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT . If necessary, replace it | |||
| Fan operates at the wrong temperature: readings not consistent | Restore the correct connections with the instrument panel See E4010 INSTRUMENT PANEL . If necessary, replace it | |||
| 6 | COOLING SYSTEM LEAKAGE TEST | All OK | Problems met | Operation |
| Carry out the cooling system leak test Op. 0510C30 | Continue to Step 7 | Coolant leaks discovered | See table X10 ENGINE COOLANT LEAKS | |
| 7 | CHECK THAT THERE IS NO GURGLING | All OK | Problems met | Operation |
| Check that there is no gurgling/oil in the coolant reservoir | Continue to Step 8 | Fluid or bubbles: head gasket damaged | Replace the gasket Op. 1016C10 | |
| 1.2 8v Climatizzatore | Check that there is no gurgling/oil in the coolant reservoir | Continue to Step 8 | Fluid or bubbles: head gasket damaged | Replace the gasket Op. 1016C11 |
| 8 | CYLINDER HEAD HYDRAULIC SEAL CHECK | All OK | Problems met | Operation |
| Check the hydraulic seal of the cylinder head | Continue to Step 9 | Seal insufficient | Replace the cylinder head Op. 1016C10 | |
| 9 | MONOBLOC HYDRAULIC SEAL CHECK | All OK | Problems met | Operation |
| Check the hydraulic seal of the block | Continue to Step 10 | Seal insufficient | Replace engine block Op. 1012A10 | |
| 10 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||