TEST RESULTS

Check that the gas charge in the system is correct

Go to Step 2

Gas charge not correct

Restore the correct gas charge

With the engine running and the climate control system on (compressor button ON), check that the leak is by the system pipe housings or the seat for the drier filter or the pipe couplings on the evaporator assembly.

Go to Step 3

Leakage identified on the climate control system circuit

Restore the seal of the circuit or, if necessary, replace the evaporator assembly

Withdraw the pipes from the compressor and make sure that the O-rings on the pipes are correctly positioned; specifically check whether there has been pinching.

Go to Step 4

O-ring seal failure

Replace the O-rings and refit the pipes on the compressor

With vehicle's engine running, climate control system on (compressor button ON), check whether the leakage is next to cracks or breakage on the expansion valve.

Go to Step 5

Leakage found next to cracks or breakage on the expansion valve

Expansion valve replacement

 Op. 5040B30 EXPANSION VALVE (ORIFICE TUBE) - R+R

Check that the leakage is on other components of the cooling system, specifically other components/pipes of the cooling system, the evaporator or the compressor.

End of diagnosis

Leakage detected on the examined components

Restore the seal of the components on which the leakage has been detected and, if necessary, replace them.