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| A- The pressure in the refrigerant circuit is less than shown in the table, (insufficient refrigerant in the circuit). |
| - Check for leaks using leak detector. |
| - The high-pressure safety valve has opened; check the activation for the radiator fan referring to the current flow diagram. |
| Check refrigerant pipes and refrigerant hoses for bends that have too tight radius (restrictions in cross-section) and for external damage. If no faults are found, purge the refrigerant circuit. |
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| B- The pressure in the refrigerant circuit is greater than or equal to the value in the table. |
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| Set air conditioning system to maximum cooling power. |
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| Open vents in dash panel. |
| The air conditioner compressor is driven by the engine, via the V-belt and magnetic clutch. |
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| If the air conditioner compressor is not being driven, check the power supply for the air conditioning system magnetic clutch -N25- in accordance with the current flow diagram. |
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| If power supply is OK, repair magnetic clutch. |
| If the air conditioner compressor is not being driven, check the refrigerant circuit: |
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| Raise engine speed to 2,000 rpm. |
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| Observe the manifold gauge. |
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