Dome light issue
 

I am having issues with my dome lights and vanity mirror lights ( the mirrors or visors above the passenger and driver heads ). The front dome light turns on and stay dimmly lit when I manually turn them on. When I control them through the main switch to control all of the lights, none of the lights turn on regardless of the position it's in. I set it to door and the lights do not turn on. I set it to on and still nothing. The visor mirrors also do not light up. I checked the 14 fuse and 15 fuse inside. I also checked the fuse under the hood. The fuses all gave me 14.2v when I check both sides of the fuse. When I check the voltage at the dome light it reads 9v. I put a 12v tester and it also was dimmly lit at the dome light. Can it possibly be the switch giving issues or what can it be? This happened after I try to program the garage opener which is located on the same panel as the dome lights. The garage opener/homelink doesn't light up anymore either. It also stopped working.

Or does anyone have the wiring diagram for the 1st gen rdx for the dome lights? I'm trying to firgure out if there is a relay possibly

Where should I send?

Can you email it to me please. I would appreciate it thank you. Range35@yahoo.com

The bird as flown away.

I have the same issue, my alarm was set off 1 night, It went off several different times. The following day. i had dimmed lights on the front upper console n rear dome light. n slowly but surely they stopped working altogether. I believe the culprit is a relay, I have not been able to trace its location yet.

Who needs real help fixing this problem? The problem solution cost money

Thank you, Poveiro. For the schematics
It's 100% a relay that's stuck.

Maybe you should leave the info about that stuck relay in here for future reference.

Certainly, perhaps i spoke to soon. I have not yet found the location of the said relay, but i feel confident that to be the culprit. The schematic will aid to prove this theory.!! Yes i will share my findings. Merci bocu!

@Kevin125 Have you found the relay?, If yes can you post the location to help @1rdxbandit

Thank you again for sending me the diagrams.

Unfortunately there is no relay. But it does make things simpler to find the problem.

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I am going to apologize in advance for this long reply but I'll be as detailed as possible. Sorry for any grammatical errors. I am typing all of this on my phone while at work.

I finally found the culprit after purchasing the Electrical book. So if you look at the blueprint on page 10-5, there is no relay for the interior lights. But it is easy to figure out. So first open your two front doors and see if the courtesy lights are working at the bottom of the door. If they are not working then you must check fuse 22 under the hood. If that's good then move onto the fuse box under the dashboard on the driver side. I believe it is fuse 14. If the door courtesy lights do not work then you have a more difficult issue and you will have to check "under-dash junction box (Photo 56, View 294)" ill attach that picture below.

If both of the fuses are good and both courtest door lights are working then you can check the dome lights and vanity mirrors for low voltage with a mulitimeter. If you are receiving anything less than 11.5v then you have a short somewhere after the interior fuse box. If you are receiving 0v that means you have a burnt wire or a disconnected wire. So i was receiving power to the dome lights but around 9.5v. The vanity mirrors i was receiving 0v. So there is only one link between the junction box and the vanity mirrors and dome lights. That is the connector C210 (Photo 54, View 267). I'll attach a photo of this connector. This is where the main problem is. This is the highest connector which is close to your left foot. So if a bit of water splashes over on the connector, it will short out the connector. Which is very rare but can happen apparently. My connector was completely corroded and was a struggle to seperate it. I basically used t-taps and jumped all the wires until i can find the correct connector to replace the corroded one. But everything is working again 100%.


https://cimg5.ibsrv.net/gimg/acurazi...efe572ce33.jpg
Page 10-5 the main power diagram for the interior lights.
https://cimg7.ibsrv.net/gimg/acurazi...d59b9c189b.jpg
C210 (circled in red) is the culprit if your door courtesy lights are working but your dome lights are not working. C210 connector image in picture 54
https://cimg8.ibsrv.net/gimg/acurazi...437a9cca76.jpg
IMAGE 54. C210 connector circled in red. This is located behind the kick panel below the fuse box. White connector. Most likely this is where the problem is.
https://cimg0.ibsrv.net/gimg/acurazi...bd76cfe068.jpg
Check here (circled in red) if your door courtesy lights and interior light are not working after you checked both fuses. Picture of the junction box in picture 56.
https://cimg9.ibsrv.net/gimg/acurazi...ec2a5f14a1.jpg
IMAGE 56. Under-dash juntion box

Thank you Kevin an Poveiro, given time contrains. I havent been able to dedicated much time into fixing this issue. However I just had a brief look now n i couldnt beileve how bad both connectors are. They are corroded to hell , in the process of disconnecting both ends two wires ripped off.

It's beyond me how they got that bad, corrosion ate away at the wire strands. Kevin what steps are u taking to pin point the culprit, is water getting in from a rubber gromet.?
Is this prone to occur in the near future.?

Very good write up! I just recently bought an 07 RDX and the dome lights and visor lights don't work. I will be looking into this.

I venture this morning to clean both connectors with vinegar n baking soda, That didn't go well at all I barely touch the pins and 2 fell apart correded to hell. Soldering would be ideal no much cable lenght n perhaps overkill a block connector is preferable.
https://cimg5.ibsrv.net/gimg/acurazi...582faa7bcc.jpg
https://cimg6.ibsrv.net/gimg/acurazi...68f88a0234.jpg
https://cimg8.ibsrv.net/gimg/acurazi...dc4b6f2cbc.jpg

Your welcome

Your welcome. Same here. I was amazed with the amount of corrosion in the connector.

I honestly have been trying to figure out what corroded the connector but I have no clue. I looked for water marks. There has been reports of water leaking through the roof and behind the a-pillar panel .but I remove the a-pillar and no water marks. I checked the other connectors and no water marks or corrosion either. My only answer right now is, since it is one of the higher connectors, maybe water splashed over the cover thats suppose to protect the connectors and got in that one? What I will be doing later on is possibly wrapping those connectors with some sort of plastic to prevent it from happening again.

Remember to check to see if your door courtesy lights work. If they work then more likely it's that connector.

I tried cleaning it out and that did not work well for me. I tried manual cleaning one by one. So I had a spare radio harness hanging around from my 2013 Civic. I literally cut the harness and t-tap the wires onto the connector wires temporarily until I can get a chance to permanently cut the connector out and solder each wire. Honestly the lights have been working better than before. I used to get flickering lights and never knew why. Also my lights were on the dim side. But I guessed it was the way they were designed even with the led swap. Now the LEDs are blinding me lol.

I've meticulously checked the rest of the connectors/hardnesses around same area, non exhibit same green corrosion, no water traces anywhere. If i didnt know any better hard to beileve but quite possible. Arcing has the same effect. Root cause loose connection, impossible I think not, Its a major pickle to work in that area. My right rib cage is in pieces.. btw: i use block connectors. I took pictures to use as reference but some how i got a wire or 2 wrong. Work in process i shall say. Front dome lights work, visors work. Rear dome light is not working. Interior instrument lights are not working. I know i have a 2 wires wrong because as soon as i turn on the instrument lights the fuse blows.https://cimg5.ibsrv.net/gimg/acurazi...a4bb879932.jpg

https://cimg4.ibsrv.net/gimg/acurazi...7d8ef080a9.jpg
https://cimg9.ibsrv.net/gimg/acurazi...b13e6b4d9a.jpg
https://cimg6.ibsrv.net/gimg/acurazi...01b5f89501.jpg

I had the same problem.
What I did was, spray some carburetor cleaner in the connectors and also use a small pipe cleaner to clean and remove the deposit.
Took 15 min. Everything now work.
Also to access c210 connector you must remove the cover by the fuse box left side.

No relay. Connector left side emergency brake pedal. Remove cover highest white connector.
Disconnect and clean using carb cleaner. A small pipe cleaner also works great. Remove all deposit let dry about 30 min.
Reconnect.
Down the post there is a wiring divagations pictures as well.

This thread has been a HUGE help. Two years ago my overhead courtesy lights stopped working when any door was open. Just this past week no matter what I do, all the lights and Home Link won't work. I see that the wires for that harness/connector/whatever by the left kick panel are corroded. I want to try and clean them but for the life of me I can't disconnect it. Can anyone give me a clue how to do it? It's been driving me nuts.

Thanks in advance!

To everyone who posted on this issue, thank you. I haven't pulled apart the area under the interior fuse box yet, but I can feel the carpet down there is damp under the plastic cover. I had gone as far as to buy a new/used overhead console because my mechanic found power to the plug in the ceiling, tho i dont think he checked every wire. But now I have a good direction to go thanks to all of you contributors. Thanks.

Wonder if this also causes my moon roof to be temperamental

If still possible, could you email any schemes and comments to:
paulmaurice55@yahoo.ca
Thanks!! P. Jacob
RDX 1st Gen. Still rolling in Toronto!

thank you so much!!!