Loss of HVAC controls

Turned the truck on and had lost all hvac controls. This included seat heaters and window defrosters. The temperature gauge also showed E. Didn't see anything obvious like a blown fuse. Anyone else seen this?



https://youtu.be/GwD_gx3SmMA

 

I bet that's a fuse

I'm impressed you have 69k miles already!

 

That's what I thought, until I pulled them all and they were fine.

 

WoW! 69,000 miles already. Someone else will have the pleasure of watching my truck turn over 69,000 miles.

 

Checked these 3 fuses?


Could have lost LIN from control panel to amplifier too...

 

Interesting. The additional symptom of an error readout instead of the ambient temp on the combination meter seems to support the Air Conditioning Amp or it's power source as the culprit:

 

I am realizing how little electrical knowledge I have

 

MPX-B is the back-up power fuse
IG1 NO.2 is the A/C amplifier fuse
ECU-IG NO.2 is the control panel fuse

LIN communication...