L008 Funzionamento intermittente dell'impianto di climatizzazione

	Test results
1	COMPONENT CONCERNED	COOLANT LEVEL CHECK AND CLIMATE CONTROL SYSTEM CIRCUIT PRESSURE CHECK		OK (NO FAULTS DETECTED)	FAULT DETECTED		OPERATION
	Climate control system circuit	Switch on the climate control system (with engine on) for 10-15 minutes. Switch it off and wait for 45 minutes. Connect the climate control system repressurising station and check that the readings of the pressure values are compatible with the vehicle specifications (if there are no specifications, refer to the table below)		Go to Step 2	The pressure values do not comply with the required specifications		Empty the circuit, create vacuum and restore the correct coolant pressurisation
		External temperature (ºC)	LP and HP with AC OFF (bar)
		20	4.5 - 5
		25	5.5 - 6
		30	6.5 - 7
		35	7.5 - 8
		40	˜ 9
2	COMPONENT CONCERNED	CLIMATE CONTROL SYSTEM CIRCUIT PARAMETER CHECK WITH PRESSURISING STATION			OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Climate control system circuit	Switch on the climate control system (with engine running at 1500 rpm) with the minimum fan speed and the lowest temperature. Connect the climate control system repressurising station to the climate control system circuit and check that the readings of the temperature and pressure values are correct.			Go to Step 3	Pressure levels incorrect	Refer to the checklist See table L007 Impianto climatizzazione funziona ma raffredda lentamente
		DeltaT (ºC)	Low Pressure (LP) (bar)	High Pressure (HP) (bar)
		>8	1-3	10-14
3	COMPONENT CONCERNED	CLIMATE CONTROL SYSTEM OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED		OPERATION
	Climate control system	Check whether the climate control system operation is correct or intermittent, with following formation of ice on the circuit	End of diagnosis	Intermittent operation of the climate control system		Go to Step 4
4	COMPONENT CONCERNED	DEMISTING SENSOR OPERATION CHECK	OK (NO FAULTS DETECTED)		FAULT DETECTED		OPERATION
	Frost sensor	Check that the demisting sensor is operating correctly	Go to Step 5		Demisting sensor not working correctly		Replace the demisting sensor Op. 5040B64 SENSOR ON EVAPORATOR FOR A/C ECU - R + R
5	COMPONENT CONCERNED	PRESSURE TRANSDUCER OPERATION CHECK	OK (NO FAULTS DETECTED)		FAULT DETECTED		OPERATION
	Linear pressure transducer	Check that the pressure transducer is working correctly	Go to Step 6		Pressure transducer not working correctly		Replace the linear pressure transducer Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R.
6	COMPONENT CONCERNED	EXPANSION VALVE OPERATION CHECK	OK (NO FAULTS DETECTED)		FAULT DETECTED		OPERATION
	Expansion valve	Check that the expansion valve is operating correctly and make sure that there are no obstructions	Go to Step 7		Expansion valve not operating correctly		Replace or restore the correct operation of the expansion valve Op. 5040B30 EXPANSION VALVE (ORIFICE TUBE) - R+R
7	COMPONENT CONCERNED	DEHUMIDIFYING FILTER OPERATION CHECK		OK (NO FAULTS DETECTED)		FAULT DETECTED	OPERATION
	Dehumidifying filter	Check the correct operation of the dehumidifying filter		Go to Step 8		Incorrect operation of the dehumidifying filter	Replace the dehumidifying filter Op. 5040C68 CONDENSATE DRAIN PIPE AND ANITI-CONDENSATION FILTER - ARRANGE
8	COMPONENT CONCERNED	CONDENSER OPERATION CHECK	OK (NO FAULTS DETECTED)		FAULT DETECTED		OPERATION
	Capacitor	Check that the condenser is operating correctly	End of diagnosis		Condenser not working correctly		Replace the condenser Op. 5040A40 AIR CONDITIONING CONDENSER - R.R. , create vacuum for at least 30 minutes and restore the coolant pressurisation