Jump air compressor ac works replace relays same issue HONDA
Air compressor clutch works, only one of the radiator fans will turn on will come on when I turn on the ac and will turn on when the engine heats. If I jump the compressor at the relay the ac works but i replace with a new relay and it will still not switch on the ac compressor or the other radiator fan? ON A HONDA ACCORD LX 2.2
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Re: jump air compressor ac works replace relays same...
The compressor may be low on freopn but, the fan problem is most likely the fan motor as it is the low temp fan and will run more often than both fans...to test see if you can switch the fan plugin to the other fan watch carefully that it does not get too hot as the second fan is a safety fan that works as high temp or when using the A\C
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OOPS ! Now, it sounds like the A/C relay is constantly on. In the power distribution box by the battery, try swapping another relay for the A/C relay (which turns the compressor on), and see if it now stops. If so, buy a new relay. Good luck.
yes, if you can figure out which terminal is what, you will be able to jump. Be carefull dont send 12v up the wrong wire or you will fry computer. I would pull relay out and jump at the compressor pigtail, its much safer, and the car dosn't need to be running, all your checking anyways is that the clutch is working which should give a click sound every time you tag 12volts.
start by cleaning or replacing your in cabin air filter. check to see if your AC condenser fan is turning when the AC is turned on. Make sure the front of the radiator is not clogged with bugs, mud, etc. Check AC compressor relay-make sure the compressor clutch is turning the compressor with engine at idle. lastly check for proper refrigerant charge.
Difficult to describe, but I will give it a try.
Inside the driver's side fender, close to the front of the car, there is a bracket that is held in place by one bolt, but which has a short horizontal bar as part of it which has two large clips encircling two cylinderical devices which have wires clipped into them at the bottoms. The one closest to the front (radiator) is the compressor clutch relay. The other one is the condenser fan relay.
Hope this helps you find it.
The A/C pressure switch is located in the high pressure line (the skinny one) on the passenger side of the engine compartment just under the fuse/relay box. The switch has three functions: <28 psi, the switch opens to protect the compressor from lack of lubrication. >220 psi, the switch shifts the radiator and compressor fan to high speed. >455 psi, the switch opens to protect the compressor seals. Check to see if you have any powertrain DTC's first. A faulty engine coolant temp sensor can cause problems with the compressor clutch relay. If the radiator and compressor fan come on with the A/C on but the compressor clutch does not operate, check the compressor clutch relay. You can also obtain Heater control panel diagnostic trouble codes (DTC's) by turning the ignition switch on. Then turn fan switch off. Press recirc button to select recirc air. Press and hold recirc to turn off recirc air but this time continue to hold the button down until recirc light comes on for two seconds and then goes off. If there is any trouble, the recirc light will then blink a code (if no trouble, the light will remain off) 1 blink = problem in air mix control motor circuit. 2 blinks = a problem in mode control motor circuit. 3 blinks = a problem in evaporator temperature sensor circuit. (this one could be a factor in your case) Turn the ignition switch off to end the test.
I had the same problem with the over temp sensor on the compressor. I had it repaired at the dealer for $200.00 plus. I just had the same problem reoccur. This time I bypassed the switch myself.
There is a small wire harness that runs from the compressor above the radiator, inside there are three wires. After determining which ones to jump " two smaller gage blue" the AC system works fine in all modes.