Test results

 

1

 

ACTUATOR OPERATION CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Connect the diagnosis equipment to check whether there are error codes consistent with a fault related to lack of actuator operation

 

End of diagnosis

 

Faults related to actuator malfunction have been identified

 

Go to Step 2

 

2

 

ACTUATOR CONNECTIONS CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check whether the electrical wiring connections are loose.

Detach/reattach the connection on the actuator side and on the control support side.

Check whether the error is still present.

 

End of diagnosis

 

The fault occurs again

 

Go to Step 3

 

3

 

ACTUATOR MOBILITY CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check the operation activating the function that the actuator should carry out manually.

With the engine running, switch on the passenger compartment heater fan at maximum speed.

Place the flaps in the various recirculation positions via the control/control unit (manually).

Check the air flow in the passenger compartment by placing your hand on the vents.

 

End of diagnosis

 

The recirculation actuator is not working correctly

 

Go to Step 4

 

4

 

CHECK FOR THE PRESENCE OF BLOCKAGES ON THE RECIRCULATION ACTUATOR

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check whether there is a mechanical blockage/breakage of the flaps in the recirculation actuator

 

Go to Step 5

 

Presence of mechanical blockages on the recirculation actuator

 

Remove the mechanical blockages/Replace the actuator

 

5

 

CHECK OPERATION OF THE CLIMATE CONTROL SYSTEM CONTROL UNIT

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the climate control system control unit is working correctly

 

End of diagnosis

 

The climate control system control unit is not working correctly

 

Replace the climate control unit

Op. 5040D14 CONTROL UNIT WITH AUTOMATIC AIR CONDITIONING CONTROL PANEL - R.R.