What is the function of magnetic clutch in AC car system?
Magnetic force locks the rotor and the armature plate together. This solid connection then allows the pulley to rotate the compressor crankshaft and operate the compressor. Compressor operation will continue until the electrical circuit is broken to the clutch coil, when the magnetic force is de-energized.
How does a magnetic AC clutch work?
When the driver requests AC, the system provides power to the clutch coil, thereby generating a magnetic field. When the clutch coil receives power and generates a magnetic field, it pulls a portion of the clutch plate against the clutch body/pulley, causing it to rotate the compressor shaft.
How do I know if my AC clutch coil is bad?
Resistance Test: Perform an A/C clutch coil resistance test with an Ohmmeter. Typically a clutch coil should be between the range of 2 to 5 Ohms, and any reading below 2 Ohms or over 5 Ohms indicates a bad coil. A reading of 0.00 indicates that there’s a short in the windings.
What does a AC clutch do?
The clutch on the compressor is what allows the pulley to engage and disengage from engine power so that the compressor is only turning when it needs to be. The clutch can seize, which permanently keeps the compressor activated; or it can break, which means the compressor will not be able to receive engine power.
How do you know if you have a bad AC clutch relay?
One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all. In most cases, when the AC is turned on you will be able to hear the compressor switch on. It will usually produce a familiar clicking noise from the clutch being activated.
Why is my Clutch not working on my Toyota Corolla?
Toyota Corolla 99-03 AC clutch not engaging-AC clutch relay not working-location – YouTube This video will show how to replace your ac clutch relay in your toyota corolla if your compressor clutch is not engaging.This also works in similar cars lik…
What to do if your Toyota relay is not working?
Lexus and Toyota put out technical service bulletins recommending that it be replaced with Toyota relay part # 90987-02028. If your AC light is blinking and AC not working read the applicable technical service bulletins below before buying this one to see if you really need part # 90987-02028. Hope this helps someone.
Where is the MGC relay located in a Toyota?
MGC relay is on the main relay block in the engine compartment (not the mini one on the passenger side) You’ll have to take the full cover off to get to it, not just the small cover that accesses the fuses. Did you find the recommended reading relevant to this discussion?
Is there a diagram of the AC relay?
If anyone has the factory service manual I know they have a nice diagram showing the relay locations… unfortunately I don’t have one. Many thanks!