When the vehicle engine is running, set the climate control system ECU to AUTO, operate the temperature knob to 22°C, set the fan speed to 8 bars and then press the recirculation key (check that the recirculation symbol appears on the display). Then feel the changes in air flow during flap open/closure. Also locate the grille in the engine compartment for the air intake casing and check the air intake when switching from recirculation to outside air intake.

When the control unit is set to the FULL AUTO function and the outside temperature is below 3°C the air intake flap opens automatically to prevent the windscreen from misting up

1. The recirculation symbol does not appear on the display

2. The recirculation symbol appears on the display (but the recirculation does not operate)

1. Move on to Step 3

2. Move on to Step 2

Connect the Examiner diagnostic equipment and check:

- that there are no errors at the air recirculation actuator

Keeping the Examiner diagnostic equipment connected, check, through active diagnosis,

- the correct operation of the air recirculation actuator

- correct activation of all the graphic LCD symbols on the display

1. Air recirculation actuator not working

2. The recirculation symbol does not come on

1.Move on to Step 4

2.Replace the climate control system control unit

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

Check whether the electrical wiring connections are loose.

Remove the control unit from the panel mount, disconnect the wiring connector from the control unit and check visually for any damage to the connector and reconnect correctly to check for false contacts.

Remove the oddments pocket and disconnect the connector, inspecting visually for any damage to it and reconnect the electrical connector to the actuator

Then proceed as follows: with the engine running, switch on the recirculation air intake function manually with the fan at the maximum speed. If the actuator works and the flap is driven, check whether the air flow rate varies during the movement by feeling it. Deactivate the function by returning the actuator to its original condition. Identify the air intake casing grille on the vehicle and check the air intake in the shift from recirculation to outside air and the other way round by feeling with your hand.

If the result of the check is positive, do not replace the actuator. If there are further doubts as to the operation of the actuator, it is possible to carry out the check following the instructions described below if the air intake casing is easily accessible.

See Test 5040DE SEQUENTIAL PROCEDURE FOR CHECKING RECIRCULATION ACTUATOR OPERATION

Replace the recirculation actuator

Op. 5040D75 AIR CONDITIONING RECIRCULATION FLAP CONTROL MOTOR - R.R

1. Flap travel incomplete

2. Kinematic components/toothed wheels damaged

1. Free the air recirculation actuator flap from the impediment

2. Restore the correct operation of the recirculation kinematic components