How does air conditioning pressure switch know bad?
Automotive air conditioning pressure switch power supply by the three-state switch from the 3-pin switch into the switch, through the internal series of high-voltage switch and low-voltage switch from the 1 # feet output to the air conditioning controller and compressor relay. Three-state switch 4 # feet connected to the iron, after the pressure switch from the 3 # pin output high-speed fan request signal to the engine computer, both pressure greater than 1.77MPa when the condenser fan high-speed turn, less than 1.37MPa condenser fan low speed The
Do not know you are the car has two lines and three lines, the two lines of the measurement of the two terminals should be unreasonable air conditioning pressure after the three lines with a control fan is the same principle
If the compressor does not work, or the electronic fan does not work, the electronic fan is often the pressure switch is a problem.
