How do you change a high pressure switch on an AC compressor?

How do you change a high pressure switch on an AC compressor?

1. Step 1: Locate the A/C pressure switch.
2. Step 1: Disconnect the negative battery cable.
3. Step 2: Remove the switch electrical connector.
4. Step 3: Remove the switch.
5. Step 1: Install the new switch.
6. Step 2: Reinstall the electrical connector.
7. Step 3: Reinstall the negative battery cable.
8. Step 4: Test the A/C.

How do you jump a 3 wire AC low pressure switch?

How To Jump 3 Wire Ac Pressure Switch In Simple Steps

1. Reset PCM Fuse. You have to get rid of the PCM fuse to start the repairing procedure.
2. Jump AC Relay. Connect the wires according to the numbers printed on it.
3. Connect The Charging Connectors. It is essential to remove power before starting the process.
4. Open Gas Valves.

What is the purpose of a low pressure switch?

The low pressure switch monitors the refrigeration system for a loss of refrigerant charge, and may also be helpful in stopping the evaporator (indoor) coil from freezing up due to a dirty filter or low airflow over the coil.

How can I replace my a / C pressure switch?

In order to safely and efficiently replace your A/C pressure switch you need a couple of basic tools: Free repair manuals – Autozone provides free online repair manuals for certain makes and models Step 1: Locate the A/C pressure switch. The pressure switch can be mounted to A/C pressure line, compressor or accumulator/drier.

Can a low pressure switch cause a compressor to go off?

Put the AC on MAX before checking the compressor. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. The system’s computer keeps the relay grounded but it can go on and off due to the bad switch.

Do you need to unscrew a pressure switch?

Loose the switch with a socket or wrench, then unscrew it. Note: Typically, the A/C system does not need to be evacuated prior to removing the A/C pressure switch. This is because there is a schrader valve built into the switch mount.

What happens if your AC pressure switch fails?

If the incorrect pressure is sensed, the switch will open the A/C compressor clutch circuit to prevent operation. Once the necessary repairs are made to bring the pressure into specification, the switch will allow normal clutch operation. The most common symptom of a failed A/C pressure switch is an inoperative compressor and lack of A/C.