A/C Only blows cold when radiator fan comes on?? plz help - Toyota Yaris Forums

Callmejc27 · 09-22-2011, 01:34 AM

yes it does disengage when fan is not running...

CTScott · 09-22-2011, 06:54 AM

Quote:

Originally Posted by Callmejc27

yes it does disengage when fan is not running...

OK. That would make me think that it is kicking off due to an issue. It may be worth having a dealer or other repair shop with a TechStream tool plug into the car to see if the AC ECU has logged a DTC.

Callmejc27 · 09-22-2011, 08:49 AM

Ok cool ill take it in ... Forgive my ignorance but your referring to a diagnostic check ...? and What exactly is DTC ... lol Thanks again !

CTScott · 09-22-2011, 09:23 AM

Quote:

Originally Posted by Callmejc27

Ok cool ill take it in ... Forgive my ignorance but your referring to a diagnostic check ...? and What exactly is DTC ... lol Thanks again !

Yes. The TechStream tool is the Toyota diagnostic system. You can't read the DTC (diagnostic trouble codes) from the AC ECU with a non-Toyota specific scantool (like what would be used to read/reset the check engine light).

Some of the other subsystems the Yaris can be made to flash their indicator lights to allow you to read their DTCs without the tool, but the AC system can't.

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09-22-2011, 01:34 AM	#1
Callmejc27 Drives: 2008 Toyota Yaris 4 dr Join Date: Jan 2011 Location: Bradenton Fl Posts: 4	yes it does disengage when fan is not running...

09-22-2011, 08:49 AM	#3
Callmejc27 Drives: 2008 Toyota Yaris 4 dr Join Date: Jan 2011 Location: Bradenton Fl Posts: 4	Ok cool ill take it in ... Forgive my ignorance but your referring to a diagnostic check ...? and What exactly is DTC ... lol Thanks again !