With the engine started, set the climate control system control unit to the AUTO position, adjust the temperature to 22 °C, place the recirculation at the outside air intake and the distribution to the front position.

Adjust the fan button (+ side) gradually increasing the speed set and then decrease the speed using the button (- side), thereby checking the effect of the air flow rate variation.

Connect the diagnostic equipment and check:

- that there are no errors at the passenger compartment fan (motor + speed governor)

- that there are no errors linked to the fan (short circuit errors).

1. Error at the passenger compartment fan

2. Short circuit error

3. Fan operating module error

1. Move on to Step 4

2. Move on to Step 3

3. Move on to Step 4

Restore the loose or damaged electrical connections

See E6020 AIR CONDITIONING

Check whether the electrical wiring connections are loose:

Disconnect/reconnect the connection to the engine mounting.

Disconnect the connector and connect to a feeder (12V DC).

In these conditions the motor should turn at the maximum speed indicating that the operating moduel (speed governor) is not working

1. Electrical connections loose

2. The fan does not work

3. The operating module (speed governor) is not working

1. Renew the correct connections

See E6020 AIR CONDITIONING

2. Replace the fan

Op. 5040C30 AIR CONDITIONING FAN - R.R.

3. Replace the fan operating module

Op. 5040C44 FAN MOTOR ELECTRONIC VARIATOR - R+R

Check for loose electrical wiring connections, disconnect visually inspecting for any damage to the connector contacts.

Reconnect the connection to the resistor.

Check that the fan is working at the maximum speed: if it only works at the maximum speed, the resistor is broken.

1. Electrical connections loose or damaged

2. Ceramic resistor with T.F. blown

3. The fan only works at the maximum speed

1. Renew the electrical connections

See E6020 AIR CONDITIONING

2. Replace the ceramic resistor

Op. 5040C48 A/C FAN MOTOR RESISTOR - R+R

3. Replace the ceramic resistor

Op. 5040C48 A/C FAN MOTOR RESISTOR - R+R

Check whether the electrical wiring connections are loose

See E6020 AIR CONDITIONING

Disconnect, visually inspecting for any damage to the connector contacts.

Reconnect the connection to the engine mounting.

Check that it turns at all speeds using the switch

1. Electrical connections loose or damaged

2. Fan not working

1. Renew the electrical connections

See E6020 AIR CONDITIONING

2. Replace the fan

Op. 5040C30 AIR CONDITIONING FAN - R.R.

Check for loose electrical wiring connections, disconnect visually inspecting for any damage to the connector contacts.

Reconnect the connection to the selector at the climate control system control unit

1. Electrical connections loose or damaged

2. Switch damaged or not working

1. Renew the electrical connections

See E6020 AIR CONDITIONING

2. Replace the switch

Op. 5040D10 AIR CONDITIONER CONTROLS SUPPORT - R+R OR REPLACE