The meter should read continuity if the system has an acceptable refrigerant level. If not, replace the pressure switch.5.
Refrigerant does not wear elsewhere or evaporate: isolated leaking air conditioning systems keep low refrigerant levels. Automotive air conditioning systems with low refrigerant levels must hold the leak repaired before recharging the transaction. Most doable, a vehicle with an air conditioning system that Testament not chill has a low refrigerant flush.
Instructions
1. Remove the air conditioner fuse. A fine fuse, institute in the fuse compartment, Testament not posses any ebon burn marks. To elimination the fuse, turn a multi-meter to the ohms setting. Berth a bulge on Everyone fuse terminal. The metre should instruct continuity. Convert the fuse.
2. Install refrigerant gauges to the refrigerant assistance valve, establish on the excessive refrigerant borderline in the engine compartment. Verify that the method has Sufficiently refrigerant, approximately 56 psi with the operation in the "off" position. Provided not, repair the leak and add refrigerant.
3. Disconnect the energy switch electrical plug. The compel switch, found on the same line as the service valve, has a set of low voltage wires connected to a plug. Lift the locking tab on the plug before pulling the plug free.
4. Place the leads of the multi-meter, set to ohms, on the prongs found on the pressure switch.
Working impact switches concede the air conditioner compressor to break.An automotive air conditioner's power switch cycles the vehicle's compressor on and off when the refrigerant energy falls below an beneficial constant. This protects the compressor from damage.Turn the air conditioning system on. Check the voltage going to the plug with the multi-meter turned to DC-Volts. Place one lead against the vehicle frame and the other lead into the plug openings, one at a time. One opening should read between 12 and 14 volts. If not, troubleshoot the electrical system leading up to the pressure switch. Turn the system off.
6. Insert a jumper wire into the two openings of the plug. Turn the air conditioning system on. If the compressor turns on, replace the pressure switch. If the compressor does not turn on, check the compressor relay. Turn the system off.
7. Remove the jumper wire. Plug the switch in.
