If the Air Conditioner's Jeep Grand Cherokee WK does not switch to a low circuit (with a high circuit with normal pressure), the problem may be in the expansion valve. The system cannot switch from one path to another when the valve is jammed. To correct the air conditioner, you can try to replace the valve-it is located on the left side near the rear of the engine compartment-two tubes from the compressor and the dryer filter attached to it.
