1-6 of 6 Results. My car ac went out. Filter. It should have ground to the black wire, reference voltage to the red wire and the signal comes out the green wire. Honda should be ashamed of their company, such a Brand name they are ruining with Honda Civic 2009 A.C problem. Well, there are many reasons behind your AC, not blowing cool air. 1-6 of 6 Results. I have a 2007 Honda Civic and had my pressure switch replaced due to hot air blowing out and the compressor not engaging and still the compressor will not remain engaged and still throws the P0533 code to the computer and this code will not clear. Is is the sensor, incorrect readings? And coolant continues to pour out. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Do you suspect the ac pressure switch or ac pressure sensor? Check here for special coupons and promotions. Is it voltage 12 volts? This is a full explanation of how the system works. Price: Alternate: No parts for vehicles in selected markets. It was not spinning at all. Finally I surrendered and bought a NEW Honda compressor. Clutch is not engaging, no power to clutch. The gauge I was using has a high pressure when the compressor is not on because it was also charged by the can that is connected. Finally I surrendered and bought a NEW Honda compressor. I ordered a new one and should it on the engine soon so I can start the engine again. Wednesday, September 6th, 2017 AT 12:02 PM. Seems to be a common problem. I do not have voltage at the red/white wire on connector next to A/C clutch. Am I missing something? After reading a lot there are some possibilities: 1- Open ground at the chassis 2- Under Dash fuse box multiplexer bad 3- 4- Please help How To Manually Engage AC Compressor Clutch. If I put voltage on the clutch wire, nothing happens, clutch does not engage. A/C gauge readings with engine off, 110 lbs on low side and 108 lbs on high side. The A/C system in your CR-V consists of a compressor that is belt-driven, an evaporator and freon. 2003 Honda Crv Ex With 158,000 Miles Should I put a 10 amp fuse in place of 7.5 fuse? Okay, the engine cranks and starts. After attaching the hose to the suction line the gauge almost pegs out so I don't think the charge is low. No rush, we'll be here. if the compressor is not engaging then check the fuses with a test light.if they are good then you will have to check the a/c relay in the relay box.if this is good then you might have a low freon level in the system that won`t allow the system to work.it could be a problem with the diode at the a/c compressor of the compressor itself maybe seized,even a car this new. Many of Honda's vehicles are equipped with air conditioner units. The compressor was engaging on and off continuously and the car was vibrating so I had to return it after two months. There's a low pressure switch in the system that keeps the compressor from kicking in if it losses pressure. The problem seems to be that the condenser fan in front of radiator is not coming on. 0. Red should have 5 volts reference voltage on it. I will check if there is voltage at A/C clutch. Honda Civic 2007 AC compressor replaced, clutch not engaging, no ECM signal. It does show that the PCM is able to activate the clutch relay so the control side is likely OK. WHAT DOES EX, EX-L, LX AND SE STAND FOR ON A HONDA? If I put 12 volts on the blue wire, condenser fan comes on and the compressor low side and high pressures read 35 lbs and 250 respectively. UAC . From the leaking refrigerant to the bad compressor, even a tiny fault in the HVAC system can make you face difficulty with your AC. I Was Wondering If There's A Way To Do A Compression Test Without The Starter Hooked Up Any Suggestions Would Be Very Helpful. ... My friend thinks it’s the clutch on the compressor not engaging. 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