Car Ac Pressure Switch Wiring Diagram

1 driver selects ac 2.

Car ac pressure switch wiring diagram. It so happens that on some vehicles cadillacs the high pressure sensor is connected to the other sensor voltage reference line. San antonio tx 78266 p. In a few car models the power of the air conditioning system flows from the ac switch to the fuse before being transmitted to the clutch oil through the low pressure evaporator temperature. How the ac works in ford escape.

You can next try jumping the pressure switch es to see if you can get the compressor to operate. Low pressure ac cycling switch. You have to make sure that the compressor has enough oil to function properly. Pcm checks ambient temp sensor must be above 35 f 5.

Connect the wires according to the numbers printed on it. The connection sends 0 5 volts of pressure to the pcm fuse. Pcm checks cylinder head temp sensor. Hvac controller sends an ac request signal to pcm 4.

Must be below set. You have to bypass 3 wire ac pressure switch from b1 to b4 to power up the compressor clutch. Dual function high pressure switch. How to vacuum ac system in your car.

Know the process here. Take caution when doing this as you can cause damage if you are not familiar with how your ac electrical system works. Hvac controller checks evaporator temp sensor. Vintage air 18865 goll st.