| | Results of the tests |
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no faults in the climate control control unit | Continue to Step 2 | An error is detected in the control unit | Continue following the instructions for the diagnostic equipment |
| Communication lost with control unit - CAN line error | Restore connection between climate control system control unit and body computer See See E6020 AIR CONDITIONING |
| 2 | CHECK ON SUPPLY | All OK | Problems met | Operation |
|---|
| Check that the climate control system control unit is correctly powered See See E6020 AIR CONDITIONING | Continue to Step 3 | Connections not correct | Restore the connections See See E6020 AIR CONDITIONING |
| Control unit defective | Replace control unit Op. Op. 5040D15 CONTROL UNIT WITH AUTOMATIC DUEL ZONE AIR CONDITIONER KNOBS AND BUTTONS R R |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check that the fault is no longer present | End of diagnosis | . | |