2888341 - D31 ENGINE OVERHEATING / WITH FAN NOT WORKING
The reading on the instrument in the panel shows a high engine coolant temperature and the cooling fan does not come on (Otherwise See table D30 ENGINE OVERHEATING)| Results of the tests | ||||
| 1 | CHECK OPERATION OF COOLING FAN | All OK | Problems met | Operation |
|---|---|---|---|---|
| Connect the test equipment (Examiner or other instruments) to the tester connection and carry out active diagnosis on the engine cooling fan: (in engine management control unit mode) | Continue to Step 4 | Fault in electric fan operation | Continue to Step 2 | |
| 2 | ELECTRIC FAN CHECK | All OK | Problems met | Operation |
| Check the condition and correct operation of the engine cooling fan (e.g. by powering the fan directly from the battery) | Continue to Step 3 | Electric fan faulty | Replace electric fan Op. 1088E10 | |
| 3 | FAN OPERATING CIRCUIT CHECK | All OK | Problems met | Operation |
Check, in order:
| Continue to Step 4 | Connections not correct | Restore the connections | |
| Component defective | Replace the component involved (if a fuse is involved, search for the cause of the problem) | |||
| Engine management control unit faulty | Carry out a thorough check on the control unit (using diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine control unit | |||
| 4 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |