3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

Brake Light always ON !? Need Help !

Thread Tools
 
Search this Thread
 
Old Aug 11, 2008 | 07:13 PM
  #1  
Lee_Rotary's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2007
Posts: 9
Likes: 0
From: Montreal
Lightbulb Brake Light always ON !? Need Help !

Ok so here's my problem.

All my lights are working properly when I play with the light switch ( Off, daytime, headlight etc..) with no key in Ignition.

As soon as I put the key in the ignition switch and turn it to Accesories or ON, the Brake Lights come on like I was always having my foot on the brake pedal.

All my fuse are good. I put a new Brake pedal switch and it's still the same.

So where do I start !?

Thx

Lee
Reply
Old Aug 12, 2008 | 09:53 AM
  #2  
Lee_Rotary's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2007
Posts: 9
Likes: 0
From: Montreal
Anyone !?
Reply
Old Aug 12, 2008 | 10:17 AM
  #3  
Fritz Flynn's Avatar
All out Track Freak!
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (263)
 
Joined: Jul 2001
Posts: 10,672
Likes: 413
From: Charlottesville VA 22901
Possibly the cpu #2 or flasher box is bad. These are going out left and right on FDs so if you need one send me a pm.

Thanks,
Fritz
Reply
Old Aug 13, 2008 | 10:24 AM
  #4  
Lee_Rotary's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2007
Posts: 9
Likes: 0
From: Montreal
Originally Posted by Fritz Flynn
Possibly the cpu #2 or flasher box is bad. These are going out left and right on FDs so if you need one send me a pm.

Thanks,
Fritz
Where these item are located so I can check them out !? Any pictures !?
Reply
Old Aug 13, 2008 | 11:27 AM
  #5  
Rotary4tw's Avatar
For the win...
Tenured Member: 20 Years
iTrader: (3)
 
Joined: Mar 2005
Posts: 280
Likes: 0
From: St. Paul, Minnesota
A quick fix

Hello sir!

I had a similar problem earlier in the season. Here is a simple fix for you to check, which is very likely the culprit.

Look underneath your dash area where your pedals are. This is a pain, as you will likely have to lay down on your back and look up at the bottom of the instrument cluster.

Look at where the brake pedal sensor connects to a contact surface. Without the brake depressed, you will see how the sensor is going through a little opening, which is sending the signal that the brakes are on.

The problem is, there is a plastic piece that is supposed to make contact with that sensor when it's in the non-brake position, breaking the signal. If the plastic piece has broken, the sensor will proceed in and through the contact surface, causing the circuit to think you are breaking.

If the above is the case, go find a penny or a dime, and also grab some 3m high bond adhesive strips. Cut out a small strip, and place it on the back side of the coin. Depress the peddle to raise the sensor out, then place the coin over the hole where the sensor is passing through. This coin will take the place of the plastic piece which has broken off. Secure the coin and release the peddle. The sensor will depress against the coin, and you will have solved the problem.

The last step is to look on the ground near your pedals for the little broken plastic piece. Once you find it (it's probably still down there) you will have solved your problem and upgraded your contact surface for only 5c.

Pretty cheap upgrade if you ask me!

Good luck, and hopefully this will help you. It also only takes about 3 mins to do.

-R4tw
Reply
Old Aug 13, 2008 | 02:41 PM
  #6  
Lee_Rotary's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2007
Posts: 9
Likes: 0
From: Montreal
Originally Posted by Rotary4tw
Hello sir!

I had a similar problem earlier in the season. Here is a simple fix for you to check, which is very likely the culprit.

Look underneath your dash area where your pedals are. This is a pain, as you will likely have to lay down on your back and look up at the bottom of the instrument cluster.

Look at where the brake pedal sensor connects to a contact surface. Without the brake depressed, you will see how the sensor is going through a little opening, which is sending the signal that the brakes are on.

The problem is, there is a plastic piece that is supposed to make contact with that sensor when it's in the non-brake position, breaking the signal. If the plastic piece has broken, the sensor will proceed in and through the contact surface, causing the circuit to think you are breaking.

If the above is the case, go find a penny or a dime, and also grab some 3m high bond adhesive strips. Cut out a small strip, and place it on the back side of the coin. Depress the peddle to raise the sensor out, then place the coin over the hole where the sensor is passing through. This coin will take the place of the plastic piece which has broken off. Secure the coin and release the peddle. The sensor will depress against the coin, and you will have solved the problem.

The last step is to look on the ground near your pedals for the little broken plastic piece. Once you find it (it's probably still down there) you will have solved your problem and upgraded your contact surface for only 5c.

Pretty cheap upgrade if you ask me!

Good luck, and hopefully this will help you. It also only takes about 3 mins to do.

-R4tw
Thx for the help ! But everything is ok under this side.

I found my problem ! My ECU was not grounded to the car! I run a wire from the car to the ECU and everything is working perfect now !

Thx guys !

Lee
Reply
Old Aug 13, 2008 | 04:17 PM
  #7  
jectrx7's Avatar
Full Member
Tenured Member 15 Years
 
Joined: May 2005
Posts: 185
Likes: 0
From: washington
i bet your brake fluid is low. the light is just a warning to let you know it needs to be toped off or the parking break is on
Reply
Old Sep 26, 2008 | 04:51 PM
  #8  
SINxSELEKTAH's Avatar
Punkrockin JUNGLIST
Tenured Member 05 Years
iTrader: (2)
 
Joined: Sep 2004
Posts: 601
Likes: 0
From: Diamond Bar, CA
Originally Posted by Rotary4tw
Hello sir!

I had a similar problem earlier in the season. Here is a simple fix for you to check, which is very likely the culprit.

Look underneath your dash area where your pedals are. This is a pain, as you will likely have to lay down on your back and look up at the bottom of the instrument cluster.

Look at where the brake pedal sensor connects to a contact surface. Without the brake depressed, you will see how the sensor is going through a little opening, which is sending the signal that the brakes are on.

The problem is, there is a plastic piece that is supposed to make contact with that sensor when it's in the non-brake position, breaking the signal. If the plastic piece has broken, the sensor will proceed in and through the contact surface, causing the circuit to think you are breaking.

If the above is the case, go find a penny or a dime, and also grab some 3m high bond adhesive strips. Cut out a small strip, and place it on the back side of the coin. Depress the peddle to raise the sensor out, then place the coin over the hole where the sensor is passing through. This coin will take the place of the plastic piece which has broken off. Secure the coin and release the peddle. The sensor will depress against the coin, and you will have solved the problem.

The last step is to look on the ground near your pedals for the little broken plastic piece. Once you find it (it's probably still down there) you will have solved your problem and upgraded your contact surface for only 5c.

Pretty cheap upgrade if you ask me!

Good luck, and hopefully this will help you. It also only takes about 3 mins to do.

-R4tw
This problem just happened to me on monday. I was about to break out the FSM and DVOM to find the problem when i thought i should search the forums first.

I found the plastic pieces on the floor near the foot rest.

Sorry for the thread resurrection, but you helped me out a lot. Thanks
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
82streetracer
1st Generation Specific (1979-1985)
7
Aug 23, 2015 09:28 AM
fastsaab
New Member RX-7 Technical
5
Aug 19, 2015 11:42 AM




All times are GMT -5. The time now is 03:57 AM.