A/C suddenly quit - Toyota Yaris Forums

ktb973 · 07-09-2011, 03:30 PM

Quote:

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.

CTScott · 07-09-2011, 03:33 PM

Quote:

Originally Posted by ktb973

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.

No. It would have to support the Toyota diagnostics protocol, as opposed to OBDII.

ktb973 · 07-09-2011, 07:50 PM

Thank you for your help. I think I will just take it in rather than going down a rat hole trying to diagnose it myself. It does seem like an electrical problem I suppose.

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07-09-2011, 07:50 PM	#3
ktb973 Drives: 2007 yaris s sedan Join Date: Jul 2011 Location: Whiting Ks Posts: 7	Thank you for your help. I think I will just take it in rather than going down a rat hole trying to diagnose it myself. It does seem like an electrical problem I suppose.