Contents

		TEST RESULTS
1	GAS CHARGE CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With vehicle's engine idling and compressor on, check that the gas charge quantity is correct	Go to Step 2	Gas charge not correct	Restore the correct gas charge
2	COOLANT GAS CIRCUIT LEAKAGE CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With vehicle's engine running, climate control system on and passenger compartment heater fan at max. speed (compressor button ON), position the air adjustment knob/button at max. cold, and check for any leakage.	End of diagnosis	Leakage found in the circuit	Go to Step 3
3	COOLANT GAS CIRCUIT LEAKAGE CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With the engine running and the climate control system on (compressor button ON), check that the leak is by the system pipe housings, the seat for the drier filter or the pipe couplings at the evaporator assembly.	Go to Step 4	Leakage found in the cooling system circuit, due to an O-ring seal failure	Replace the O-rings and refit the system pipe housing blocks, those for the drier filter housing and those for the pipe junctions on the evaporator assembly.
4	CLIMATE CONTROL SYSTEM O-RING CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	Withdraw the pipes from the compressor and make sure that the O-rings on the compressor pipes are correctly positioned; specifically check whether there has been pinching.	Go to Step 5	Leakage found in the cooling system circuit, due to an O-ring seal failure	Replace the O-rings and refit the pipes on the compressor
5	EXPANSION VALVE O-RING CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	Check that the O-rings on the expansion valve are positioned correctly; specifically check that there is not pinching.	Go to Step 6	Leakage found in the cooling system circuit, due to an O-ring seal failure	Replace the O-rings of the expansion valve
6	COMPRESSOR/PIPES CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	Check that the leakage is on other components of the cooling system, specifically other components/pipes of the gas system or the compressor.	Go to Step 7	Leakage detected on the examined components	Restore the seal of the components on which the leakage has been detected and, if necessary, replace them.
7	EXPANSION VALVE SEAL CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With vehicle's engine running, with climate control system on (compressor button ON), check that the leakage is next to the expansion valve.	Go to Step 8	Leakage next to the expansion valve	Replace the expansion valve Op. 5040B30 EXPANSION VALVE (ORIFICE TUBE) - R+R
8	CONDENSER CONDITION CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With vehicle's engine running and climate control system on (compressor button ON), check that the leakage is next to cracks or breakage of the condenser.	Go to Step 9	Leakage found in the condenser	Replace the condenser Op. 5040A40 AIR CONDITIONING CONDENSER - R.R.
9	EVAPORATOR ASSEMBLY SEAL CHECK	EVERYTHING OK	PROBLEMS ENCOUNTERED	OPERATION
	With the engine started and the climate control system started (compressor button ON), check that the leak is next to the evaporator assembly or the bend in the pipes.	End of diagnosis	Leakage next to the evaporator assembly	Replace the evaporator assembly Op. 5040C64 A/C EVAPORATOR - R+R