Question about 2004 Toyota Corolla

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Electricity is not reaching the a/c compressor.

I checked the gas and it is ok. I also connected the compressor directly from the battery and it started working perfectly. I'm thinking it is the magnetic clutch relay. What could it be if it wasn't the relay?

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  • Toyota Master
  • 4,369 Answers

If it engages when you bypass, it is not the magnetic clutch.
It could be a relay or the low pressure cycling switch. I would jumper the cycling pressure switch connector. If it runs, I would check to be sure you have enough pressure first with compressor running. If ok, change the cycling switch

Posted on Jul 03, 2009

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Posted on Jan 02, 2017

justuscc
  • 360 Answers

SOURCE: Compressor Magnetic Clutch - 1996 Honda Accord EX

looks like fuse # 8 "heater control relay- ac clutch relay-cooling fan" fuse runs the 12 volt side " black and yellow stripe wire " pcm or ecm runs the ground side "red -blue stripe wire"- what else do you need?

Posted on Sep 18, 2008

  • 83 Answers

SOURCE: how do you replace the ac magnetic clutch on a 2005 corolla

Sounds like your A/C compressor coil is bad.I would suggest replacing clutch disc,pulley and coil or you can put a complete compressor assy. on which is a little more expensive.

Posted on Jul 05, 2009

  • 713 Answers

SOURCE: 97 Lumina. No 12V at the AC compressor clutch.

Try checking the low pressure and high pressure switches. If one of these are faulty it can keep compressor from working. Take a paper clip and jump the ports on the plug in for the switches and see if the compressor comes on if it does then that switch is bad.

Posted on Sep 13, 2009

Testimonial: "Makes very good sense. Logically you don't want the comressor to run with no refregirant in the system. I did not know about this fail safe mode. "

philschneide
  • 448 Answers

SOURCE: ac compressor clutch relay 1991 honda accord

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.

Posted on Oct 20, 2009

  • 48 Answers

SOURCE: 1991 Sierra GMC AC control problem

The a/c relay is located behind the dask pockett in a series of 3 on a metal brackett, unpulg each, one one at a time, till the lights in the control unit goes off and then plug it back in,If this doesnt work then disconect the ground cable on your battery for 15 sec and reconect . After this your light will not flash and you can turn on your a/c and it will work,thats is if your freon pressures are correct so as to give the low pressure switch enough pressure to send 12.50 volts to the compressor so the clutch will kick in.I hope this helps you out..

Posted on Sep 06, 2010

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Assuming you have the system adequately pressurized with gas, check out the low pressure cut off switch. If it is in the open position no current will reach the clutch windings and the compressor will not operate.

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Check this two procedure for...

2.2L (VIN 4) Engine
  1. Properly discharge the air conditioning system into a recovery/recycling machine.
  2. Remove the drive belt on the vehicle.
  3. Remove the air cleaner and resonator assembly.
  4. Unplug the electrical connections from the compressor.
  5. Disconnect the negative battery cable.
  6. Unfasten, then remove and cap the A/C hose from the compressor.
Cap the refrigerant lines when opening the system to prevent the entry of dirt and moisture and the loss of refrigerant lubricant.
  1. Loosen the A/C compressor bolts, then raise and support the vehicle.
236a413.jpg

Fig. 3: Compressor mounting on the 2.2L (VIN 4) engine
  1. Remove the compressor.
To install:
  1. Position the compressor on the vehicle.
  2. Lower the vehicle.
  3. Install the compressor bolts, then tighten the front bolts to 37 ft. lbs. (50 Nm) and the rear bolts to 22 ft. lbs. (30 Nm).
  4. Attach the compressor hose using NEW sealing washers. Tighten the mounting bolts to 24 ft. lbs. (33 Nm).
Lubricate O-rings with refrigerant oil.
  1. Engage the electrical connections to the compressor.
  2. Install the air cleaner and resonator assembly.
  3. Install the serpentine drive belt.
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3.1L (VIN M) Engine
  1. Properly discharge the air conditioning system into a recovery/recycling machine.
  2. Disconnect the negative battery cable.
  3. Remove the serpentine drive belt.
  4. Remove the front compressor bolts.
  5. Raise and safely support the vehicle.
  6. Remove the rear compressor bolts.
5121365.jpg

Fig. 4: Compressor mounting on the 3.1L (VIN M) engine
  1. Unplug and cap the coupled hose assembly from the rear of the compressor.
Cap the refrigerant lines when opening the system to prevent the entry of dirt and moisture and the loss of refrigerant lubricant.
  1. Disconnect the electrical connection at the compressor.
  2. Remove the compressor from the vehicle.
To install:
  1. Install the compressor on the vehicle, engage the electrical connection to the compressor.
  2. Install the coupled hose assembly to the rear of the compressor, with NEW sealing washers. Tighten the mounting bolt to 24 ft. lbs. (33 Nm).
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  4. Lower the vehicle.
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Hope this help (remember rated this).

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