Help with a temp control DTC code

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Joined
Jan 10, 2013
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Location
Castro Valley, CA
I've been trouble shooting my heater and ended up changing the AC Amplifier, when I do the self-diagnostics I'm getting Rear Defrost and Rear heat buttons blinking. Any idea what to look at, I'm not seeing that configuration in my shop manual "Most likely missing it :)" my rig is a 1999 - Thanks in advance - Matt

6536957612364355426


6536957612364355426
 
Thank you for posting the info from the work shop manual, much appropriated :) I'm getting both the rear defrost and the rear AC or fan switch blinking after the DTC test. Both the larger buttons toward the bottom of the photo. I see some codes for the rear AC switch but not with the defrost, maybe I'm just missing it?


tempcontrol.webp
 
I do not see it either. Have you tried clearing the code and see what returns?
 

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