Here is the instructions for entering A/C diagnostic mode.

toyo

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I have seen quite a few posts regarding A/C problems lately. The HVAC system has it's own diagnostic system embedded into it. Follow these instructions and it should lead you to the problem or problems.
 

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Wish I had that a year and a half ago...... Would have saved me a lot of $$ and time. This should be a sticky! Well done.
 
Do you have the DTC chart (Diagnostic Trouble Code chart) or did I miss it in the instructions?

Thanks
 

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