TEST RESULTS
1
FAN POWER SUPPLY CHECK
EVERYTHING OK
PROBLEMS ENCOUNTERED
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
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
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
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
Check that the fan is working correctly
The fan is not working correctly
Replace the fan
Op. 5040C30 AIR CONDITIONING FAN - R.R.