|  |  | Results of the tests | 
| 1 | CHECKING  WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
the diagnostic equipment (Examiner) to the diagnostic socket.Check that there are no faults in the climate control system
control unit | Continue to Step 2 | An error is detected in
the control unit | Continue following the instructions for the diagnostic
equipment | 
| Lack of dialogue with the control unit | Restore connection between climate control system control unit
and body computer:  See   E6020  AIR CONDITIONING | 
| 2 | ACTIVE DIAGNOSIS WITH DIAGNOSTIC
EQUIPMENT | All
OK | Problems
met | Operation | 
|---|
|  | Using
the diagnostic equipment (Examiner or other instruments) carry out
active diagnosis on the recirculation motor | Continue to Step 3 | Recirculation motor connection
faulty | Restore
the correct connection   See   E6020  AIR CONDITIONING | 
| Recirculation motor faulty | Replace the recirculation motor  Op.   5040D52 | 
| Recirculation motor flap faulty | Replace the recirculation motor flap   Op.   5040D52 | 
| 3 | 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' |