This 2002 Honda Accord came in with the complaint that the blower worked but nothing else on the a/c control assembly worked or would even light up. I started by checking the #3 fuse in the driver’s side interior fuse box (7.5 amp) and the #13 fuse in the passenger side interior fuse box (7.5 amp). Both fuses were good. Time to remove the a/c control assembly for testing of the harness. First I removed the two lower retaining screws.
Then I used a small screwdriver to pop the clock and hazard switch assembly from the dash.
With the panel removed I could now access the one hidden screw and pulled the panel with the a/c control assembly out of the dash.
I then removed the control assembly from the panel.
Then reconnected it to the wiring for testing.
I had to disconnect the control assembly to get better pictures of the wires. First I checked for ignition power on the black/yellow wire at position 2. Good
Then I checked for battery power on the white/yellow at position 3. Good
Then I checked for continuous ground on the black wire at position 9. Good
Diagnosis and replacement of faulty a/c control assembly.
I want to thank you for this. I found one on EBay and replaced it. So far, so good.
You would have to do the power and ground tests outlined in the post while it was inoperative. If all signals are present and the unit is not working, it is faulty. If a circuit is missing that circuit will need to be traced out.
I have this same problem, however sometimes mine will work, then off for a while, then it works again. Any ideal, could it be something else besides the control panel? -Mark
Yes it is.
The A/C Control Assembly-you are talking about the entire assembly with the buttons and knobs?