A/C light blinking

The article was supposed to help you use a can of refrigerant with a gauge on it to measure the pressure. As far as retrieving codes you would need an enhanced scanner. You cannot manually retrieve them. What we're trying to do is figure out if you're low on refrigerant or have a bad compressor.

The next images I am posting hopefully will help you determine if you're low on refrigerant or not. You would need to remove the glove box out of the way to access the A/C amplifier. You will need to back probe pin number 3 on the connector with the power lead and the other lead grounded anywhere on a ground point. If you have voltage the system is full, if you have no voltage, you're either empty or overfilled.

If you do have voltage indicating the system is full and the compressor clutch disengages and A/C light blinks, then that would strongly be an indicator your compressor could be faulty. Highlighted the pin and the specs for you and the location of the A/C amplifier. I hope these images help you out.

What did the gauge reading read? The condenser fan speed will be high when the compressor comes on. It will turn off when the compressor is off. The radiator fan will do what it has to depending on coolant temperature and is a separate component.

Can you submit a picture of the reading?

I just want to jump in on this because I suspect we are overlooking the basic things that may help with this.

The most common cause of the compressor cutting off and the light blinking is due to incorrect pressure in the system.

I see that you are checking the low side pressure and it is 45 PSI when the compressor is on and 89 with it off.

What is the high side when you are checking this? I am attaching a chart below that will help with this.

So, we need to know three things to start, or we are going to chase this for a while longer.

First, we need to know what the ambient/outside temperature is. If you have 45 PSI when the compressor is on, then it should be around 85 degrees. Is that correct?

Next, we need to know the low side.

Lastly the high side pressure. If these are not correct, then the module can cut the compressor off, and it flashes the light to tell you there is an issue.

So, we need a gauge set to check the high and low side while this is running.

Without this info we are going to chase our tail.

I understand. Unfortunately, I think that is the wisest choice. Without that info, you would potentially end up spending more at trying to take the best guess.

You can have a blockage and cause this. However, what was the ambient temperature when you took the measurement, and it was 23 PSI?

If that was taken when it was 68 outside, then that may be correct. Take a look at the chart and the lower the ambient temperature the lower the pressure.

However, just confirming the low side is correct is going to point us in the wrong direction without confirming that the high side is correct as well.

Thanks for the update. Let us know as we will be here. Thanks

Please see the attached info per your request.

As for the blinking light, if we want to assume the pressure is correct on the high side then that would mean there is a drive belt issue, or the module is the issue.

Take a look at the info below and let me know if you have questions on this.

Thanks