Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

What the hell controls the air flow to the vents ?! Please answer!

 
Old 09-15-2004, 03:20 PM
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Default What the hell controls the air flow to the vents ?! Please answer!

Ok I have everything except the top half of the dashboard taken apart in my 95 Del Sol and I'm trying to find whatever controls the air flow to the vents (not the climate control smartasses lol).

No matter what button I press, the air always comes out the front vents. Of course this causes problems when I need to defrost the windshield. Any help would be GREATLY appreciated.
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Old 09-15-2004, 03:29 PM
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Default Re: What the hell controls the air flow to the vents ?! Please answer! (Jorsher)

Ducktape the front vents shut?

Seriously though, I've got no idea. Consider it a free bump.

A little air always comes through all the vents pretty much.
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Old 09-15-2004, 03:30 PM
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Default Re: What the hell controls the air flow to the vents ?! Please answer! (Jorsher)

Edit: oh, I see what you mean There's a series of flaps in the heater assembly.
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Old 09-15-2004, 03:33 PM
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lol if I duck taped it I would become the redneck I've grown to hate and am forced to live with...

Ok, so flaps in the heater assembly. Now are these flaps vacuum controlled or with a motor? Thanks
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Old 09-15-2004, 03:34 PM
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Default Re: What the hell controls the air flow to the vents ?! Please answer! (Ricey McRicerton)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">
A little air always comes through all the vents pretty much.</TD></TR></TABLE>

I figured out a way to prevent this. Although the two outer (vents by the passenger and driver side windows) are closed, I don't get any air flowing through any of the other vents. Don't ask me how, because I don't really remember. I'm sure if I went out to my car and looked at it for a while I could figure it out again. But that will take some serious bribing(or blackmale) to get me to do that. As for your problem I think someone else had this problem about a week ago or maybe less. I dont believe he fixed it either. My suggestion would be to check the connections to the buttons as well as the fuses and relays. If that doesnt do anything then I have no clue what to do.
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Old 09-15-2004, 03:34 PM
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well, on the 5th gen, there's a solenoid on the driver's side of the heater assembly, called "Mode Control Motor" that appears to control it. There's a test procedure in the helms manual. I assume it's the same assembly for the Sol?
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Old 09-15-2004, 03:38 PM
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Default Re: (project_mercy)

take the blower motor out?
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Old 09-15-2004, 03:38 PM
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Yes I was probably the one you're thinking about that asked a few days ago. Thing is, I've already got in one minor accident cuz windows fogged up at night and I couldn't defrost em, and within seconds I went through a fence onto a tree.

I just don't want a repeat episode.

Ok so if it was fuses or relays, can someone give me a pic of the Del Sol fuses, I don't have the cover. Or could someone tell me where to check?

Thanks again
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Old 09-15-2004, 03:44 PM
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Default Re: (project_mercy)

Sorry to post again could you please give me a summary of that procedure? I'd like to try it. I don't think it's the actual control that's messed up, just whatever changes the airflow.
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Old 09-15-2004, 03:49 PM
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Default Re: (Jorsher)

ick. Well, I'll tell you the civic procedure, and you can screw with it.

In the middile of the car, under the dash, is a big black assembly. That's the heater assembly. On the left (driver) side of the box is a plastic/metal box hooked up to like 3 levers and crap. That's the Mode control motor. Helms (ghetto tastic if you ask me) test procedure is this:

Disconnect the motor. The connection is on the front of the assembly. It's a 7 pin connection. there should be 4 pins on top, and 3 pins on the bottom. Number is as follows

2 3 4 1
5 6_ 7

Where the '_' is a blank spot.

Anyway.

1. Connect the battery positive terminal to #1 and the negative to #2 (the manual actually shows you just shorting the battery out. seems ghetto tastic to me. I'd personally grab power from the line leading to it and ground to battery. At least you'd be fused. Maybe they meant to bench test it or something.)

2. Using a j umper wire, short #2 individually to #3, #4, #5, #6, and #7 terminals in that order. The motor should run each time the short circuit is made

Note: If the mode control motor does not run when shorting the first terminal, short the terminal again after shorting the other terminals The mode control motor is normal if it runs when shorting the first terminals again

That's the whole test.

I assume it works on a state machine, hence why it may not work when you first short #1, but it resets the state when you get to #2, and then you do them in order and come back and it's OK.

anyway, it looks like you can manually actuate the flaps based on the levers that's hooked up to the motors. Use your feet or something

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Old 09-15-2004, 03:53 PM
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Default Re: (project_mercy)

it's #4 in this callout

http://www.hondaautomotivepart...+UNIT

Taking off now. Good luck
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Old 09-15-2004, 03:56 PM
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Default Re: (project_mercy)

Yes, thank you sooooo much.

I looked in that spot and found it, after spending all day tearing apart the insides and looking under the passenger side. Found it within 5 minutes thanks for the tip. It's a Denso made part with some levers and stuff running off it. I'm going to try that test, thanks soooo much.

Man looks like I tore out all of the interior for nothin, I'll get some good deep cleanin done now though.

EDIT: Ok problem solved THANKS. Instead of doing all that jumper stuff, I just toko out the two screws holding it to the lever things. Then I pressed the button and the engine moved. It seems that the levers are just too friggin hard to move. I can move them, but i have a few cuts where I hit the gas pedal or other sharp objects. I'm going to try to adjust it tomorrow so it will move freely.

Thanks again :-D


Modified by Jorsher at 7:33 PM 9/15/2004
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