rsx over active key sense wire
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=101265
Printed Date: May 14, 2025 at 4:16 AM
Topic: rsx over active key sense wire
Posted By: wykdfantasy
Subject: rsx over active key sense wire
Date Posted: January 17, 2008 at 4:13 AM
On the Acura RSX 02 - 06 there is a red w/ white stripe key sense wire in a blue connector on the steering column where you put your key in the ignition. This wire is supposed to show ground when you insert your key. This lets the car know that your key is in the ignition.
It provides useful/useless functions such as that annoying beeping noise when you leave your key in the ignition and open your door.
It also will not lock your doors with the stock key fob/remote if your key is in the ignition.
It also lets your after market alarm with immobilizer bypass know your key is in the ignition so that it does not show two keys to the ECU (the immobilizer stores the key code)so it will properly remote start.
So as you can see its a handy little wire now and again.
The problem I have is mine needs some chill meds. It thinks there is always a key in the ignition! When I open my door with no key in, I get a beep, so annoying!
Also with that blue plug in, my stock key remote will not work.
Again, also with that blue plug in, my remote start will not work, unless I disconnect the key sense wire, therefor not showing the ECU two keys(the bypass module stores the key code).
Does anyone know why my key sense may be over acting or maybe shorted out? Any real way to test this?
Replies:
Posted By: Velocity Motors
Date Posted: January 17, 2008 at 11:54 AM
What voltage is on that wire with no key in the ignition ? What voltage is that wire with a key in the ignition ? Chances are the key cylinder is tweaked a bit and it sees a key in the ignition. May have to take apart the cylinder and clean it out.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 12:15 PM
Thank you for the fast reply. It shows 12.5 volts weather the key is in the ignition or not. Weather the door is open or not. It always shows the same, which according to the helms manual. It should not show voltage unless the door is open and the key is in. Any ideas how to check the cylinder without messing it up?
Posted By: Velocity Motors
Date Posted: January 17, 2008 at 12:59 PM
The wire should test 0 when key is inserted into the column and 12 volts when key is not in the ignition. Are you sure you have the proper wire ? Can you take a pic of the spot where you think the key sense wire is ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 1:10 PM
I sure can, I will right now, but it is the Red wire with a white stripe on it. It is housed in the blue connector on the key cylinder.
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 1:17 PM
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 1:19 PM
The reason there is a bare spot on the wire, is that my immobilizer taps onto the wire there, however I completely disconnected that to make sure it was not the cause. There is no after market alarm or immobilizer connected at the moment.
Posted By: enice
Date Posted: January 17, 2008 at 1:46 PM
As far as I know your not suppose to connect anything to that plug at all. You see the green plug behind it? All modules that I have seen get connect on that. Also, the key sense wire is suppose to be on the left had side of the steering column. Its supposet to be a 7 pin plug for the bypass like the green one. DEI and Fortin share the same and I think bypass kits have it that way too.
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 1:58 PM
are you sure you are talking about the rsx? I remember seeing a walk through which clearly points out that plug. Here it is: https://forums.clubrsx.com/showthread.php?t=172184&highlight=compustar+DIY
Please correct me if I am wrong but I think it is that plug.
Posted By: tedmond
Date Posted: January 17, 2008 at 3:05 PM
i got a 7 pin harness here too. Pin 2 - ignition (yellow)
Pin 3 - Security Lamp (blue/orange)
Pin 6 - Data (RED / blue) i use fortin pieces alot and only connected to 7 pin harnesses
Posted By: wykdfantasy
Date Posted: January 17, 2008 at 3:35 PM
The green connector is a 7 pin harness, the blue one is a 6 pin harness. The vehicle starts just fine without the blue harness in. The only functions I see it serving are to tell the vehicle when the key is in and to light up the red circle around the key hole. If anyone else know what other functions it serves please let me know. My stock alarm will work just fine without it plugged in, and my after market alarm and immobilizer bypass work just fine without it. I would just like to fix it so it is not broken and the light will light up around the key hole like it is supposed to.
Posted By: enice
Date Posted: January 18, 2008 at 8:56 PM
I see what you mean in regards to the bypass module. That wire should give you constant 12v all the time unless you put a key in and it shows 0v. Showing 0v all the time should give you that sound no matter what. It sounds like a the module that controls that system may be damaged. When did this issue start happening? This may help you to pin point the source of the problem and get it repaired. Never try to get around it as it may make it worse in the long run. Share the info in order for us to try and help.....
Posted By: wykdfantasy
Date Posted: January 21, 2008 at 9:26 PM
I can't remember when it first started. I checked all fuses, none are blown. I will do some more trouble shooting with it to try to figure it out. I am thinking of taking apart the plastic part near the key cylinder, got any suggestions or warnings?
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