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 have a 2000 Accord. The a/c work fine except it will not come out of the center two (main) vents. It will come out of the floor and both side vents. Also the defroster works. I have tried it on every setting from max heat to max cool. It appears the diverter from floor to face vent will not function.
After testing was performed, I ordered a new a/c control head assembly from Honda and installed it.
I looked briefly at the wiring diagrams for the two vehicles and there are only a few minor differences. To be sure you should get a copy of the wiring diagrams for both vehicles and do a wire for wire comparison. Be sure to check all of the fuses. Looks like there are at least six fuses involved in the a/c system.
Hi i have problems with a/c on accord 99 lx when i turn on the only thing work is the blower nothing else can be the control unit defective or something else
Success! – I’m sure you were right that these two bulbs died because of the many times I took the unit out of the car. I incorrectly thought that because there were two out at once that there was some sort of circuit involved, but it was simply a case of two separate bulbs blowing at about the same time.
thank you!