6th generation honda civic 1996 2000.
2003 civic floor vent not working.
Next the plastic gear set will become brittle and break which will sometimes allow the unit to work while making a ticking or clicking noise and then stop.
Start date dec 4 2013.
Step 1 most air control vents are equipped with a flow control door that is located at the vent outlet.
A climate control system can stop working after a battery replacement as the control prompt of the system is lost and needs to be rebooted by removing the defroster heater fuse for a period of time and then reinserted.
To diagnose the problem press the mode vent floor button several times.
In my case air is only blowing out of the defrost vents on both sides.
You need to see if the mode door actuator is.
No noises or anything when changing the mode via the button.
Air does not blow out of any of the 4 front vents or the floor vents aside from very faint flow.
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Turn on the ignition.
Set the temperature control dial on max cool.
The led should flash on and off as you press the button.
This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.
Turn the ignition and the fan switch to the off position.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or vent mode controls are moved.
About 30 minutes down the road the air in the vents stopped blowing blower was still working.
The day i picked it up everything worked great.
On older cars a vacuum line can crack allowing vacuum to escape rendering the vacuum vent control servos non operative.
Push the mode control button and select vent.
Changing the fan speed works fine but it only affects the defrost vents.
An actuator can go bad in of two ways.
My car has an automatic transmission.
Work the thumb wheel from one side to the other while checking the airflow.
Press and hold the recirculation control.
Other causes can.
I am having symptoms like this on 2012 ex l.
The blower behind the glove box was working very efficiently i took the cabin filter out and air was blowing out of the filter hole.
I won t change off defrost floor setting i replaced the blend door actuator and did not seem to help it my car has 56000 miles.
The biggest cause is a faulty heater core.
Honda civic gen tech and builds show offs.
You need to make certain there isn t another reason however especially since replacing the core is a complex and time consuming affair.