Quote:
Originally Posted by randy88fj62
I replaced the bulbs behind the HVAC controls. On each of the three dials, the selector light comes on when you choose (ie switch from face air to legs air).
The illumination at night of all three dials does not work, they do not have a back light that lights each single HVAC option.
QUESTION:
Does one single bulb cover the illumination of all the options or does each dial have illumination provided by their individual dial?
Probable Solutions:
1. Something is wring with the wiring for the illumination?
2. A single bulb covers all three and I inserted with wrong polarity?
Trying to figure out how to diagnose the night illumination on these HVAC controls.
Thanks.
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Is this what you mean? See my center knob and how none of the options are illuminated orange like the two outside knobs. Since this picture, I replaced most of the bulbs (and now the LCD is fully illuminated, but haven't located the problem for my center knob. And yes, I replaced the 90010-09015 and two 90010-09016s in the above diagram. It almost has to be circuit board related, unless I am missing something!
