Test results

 

1

 

FAN POWER SUPPLY CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the fan power supply is correct

 

Go to Step 2

 

Power supply not correct

 

Restore the correct power supply for the fan

 

2

 

PASSENGER COMPARTMENT HEATER FAN SPEED KNOB POSITION CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the positions of the fan speed adjustment knob are correct

 

Go to Step 3

 

The positions of the fan speed adjustment knob are not correct

 

Replace the climate control system control unit

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

 

3

 

COMPRESSOR ENGAGEMENT CHECK FROM FAN KNOB

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the compressor has activated correctly and that the LED lights up on the button, when the fan adjustment knob is at first speed

 

End of diagnosis

 

The compressor does not activate or the LED does not light up

 

Go to Step 4

 

4

 

FAN RESISTOR CONDITION CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the fan ceramic resistor is working correctly

 

Go to Step 5

 

The fan ceramic resistor is not working correctly

 

Replace the fan resistor

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

 

5

 

FAN OPERATION CHECK

 

OK (NO FAULTS DETECTED)

 

FAULT DETECTED

 

OPERATION

   

Check that the fan is working correctly

 

End of diagnosis

 

The fan is not working correctly

 

Replace the fan

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