You can jump three wire ac pressure switch to control the ac system as well. Maybe they filled it and didnt check for leaks.
Gmc Acadia Questions I Try To Turn On The Ac But The Light
Diagram how to jump 3 wire ac pressure switch. Part 2 of 3. Remove the switch electrical connector. So a shorted sensor will render the crank sensor inoperable. One might wonder how to jump 3 wire ac pressure switch by own. Disconnect the negative battery cable with a wrench of ratchet. It does the process by monitoring fan operation high pressure and low pressure then sending the information back to the computer for it to analyze.
I think the problem lies in the low voltage coming out the sensor. Maybe they just told him. Remove the ac pressure switch. The pressure switch can be mounted to ac pressure line compressor or accumulatordrier. The ac runs perfectly but you cannot control it with the button. The three wire switches is also called as pressure transducers.
You might have to do some repairs by yourself to make it run correctly again. Ac systems in vehicles run with a pressure switch. If you jump the low pressure switch with the engine running do it only for a few seconds. Ive tested the voltage on the signal wire at the ecu and got 02v with engine running and ac on. Do not jump the low pressure switch to operate the compressor non stop so you can add refrigerant. So ive sent him back to the place that regassed the ac to have it pressure checked.
Then set it aside. How to jump 3 wire ac pressure switch. Disconnect the negative battery cable. It so happens that on some vehicles cadillacs the high pressure sensor is connected to the other sensor voltage reference line. Low ac pressure will prevent the relay from sending power to the ac compressor clutch. Jump the low pressure switch only to test the circuit.
These are used with gm variable control compressors and displacement compressors.
Gallery of Diagram How To Jump 3 Wire Ac Pressure Switch
