I think the problem lies in the low voltage coming out the sensor. You might have to do some repairs by yourself to make it run correctly again.
A C Low Pressure Switch Honda Tech Honda Forum Discussion
How to jump 3 wire ac pressure switch. Low ac pressure will prevent the relay from sending power to the ac compressor clutch. If the air conditioning pressure sensor or switch is faulty then the obd ii code will relay that information to you through the scanner. These are used with gm variable control compressors and displacement compressors. The trick is to get the voltage in the middle. These are used with gm variable control compressors and displacement compressors. 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.
The three wire switches is also called as pressure transducers. Ac systems in vehicles run with a pressure switch. So ive sent him back to the place that regassed the ac to have it pressure checked. Remove the air conditioning pressure sensor and test the electrical connection leading to the sensor from your vehicles electrical harness. Do not jump the low pressure switch to operate the compressor non stop so you can add refrigerant. Amazon link ac relays toyota httpsamznto2nabjbn if your ac compressor clutch wont engage because the refrigerant is too low then you can jump the 30 and 87 pins to get the clutch engage.
Jump the low pressure switch only to test the circuit. My 03 jetta has a three wire plug pressure switch on the large line close to the firewall. You can jump three wire ac pressure switch to control the ac system as well. 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. If you jump the low pressure switch with the engine running do it only for a few seconds. Maybe they just told him.
How to jump 3 wire ac pressure switch. Ive tested the voltage on the signal wire at the ecu and got 02v with engine running and ac on. Maybe they filled it and didnt check for leaks. Shorting the green wire to 5v or 0v would be sending voltages that would indicate to the ecu either extreme low pressure or extreme high pressure. How to jump 3 wire ac pressure switch. The three wire switches is also called as pressure transducers.
Touch the probes of the multimeter to the electrical harness end of. Which wires do you jump around to get current to the clutch so i can add enough freon to get the low pressure switch to allow current to the clutch. I used 2x 2k resistors one from 5v to middle and one from gnd to middle. The ac runs perfectly but you cannot control it with the button. One might wonder how to jump 3 wire ac pressure switch by own.
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