A/C suddenly quit

[ktb973]

If the light is on, then the AC Amplifier (ECU) is alive (and the A/C fuse is good). At this point, it would be ideal to be able to read the DTCs from the AC amplifier, but unfortunately that particular ECU will only report its DTCs via the Toyota TechStream tool.

So, I would verify the voltages on the pressure sensor and the evaporator temp sensor, and if they are both OK, I would probably opt to have someone plug in a TechStream tool.

It would be nice to be able to plug it into a Toyota Techstream

I have a code reader from mac tools. Think that will tell me anything? I'll try it anyway. The only reason I haven't yet is that it was in my car that my wife is driving now.