Jump to content
LegacyGT.com

TC, ABS, and BRAKE lights came on


Recommended Posts

During my commute tonight, about 2-3 minutes after starting the car, the TC, ABS, and BRAKE warning lights came on.

 

 

The Nav screen also kept restarting during the drive, about every 5 minutes. The headlights would intermittently get dim then brighten up again, not necessarily at the same time as the Nav screen reboots.

 

 

No issues with driving that I could tell, and no issues with the stereo or AC systems.

 

 

Car only has suspension mods, axle back exhaust, and a high flow air filter, which have been on for a while now.

 

 

Fluid levels are all good. ABS fuse is good.

 

 

 

Appreciate any ideas and help!

Link to comment
Share on other sites

Cleaned the battery terminals. Turns out the negative side terminal is also a bit too small somehow.

 

 

Went for a drive after, and the warning lights are gone and no more flickering of the Nav screen or headlights.

 

 

However, I reread the codes, and now there are three for ABS-- C0071, C0052, and C0042.

Link to comment
Share on other sites

I wonder if you've got this black plastic piece inside the negative terminal that limits how tight it can go. Not the best picture attached, but only one I can find. I had to remove that years ago to get the negative terminal to fit aftermarket batteries tightly.

 

One of those codes seems to be from low voltage, I wonder if they're all just from things going wonky due to low battery voltage.

groundclamp.jpg.647cab9e7e519100872a682a35c90838.jpg

dtcs1.thumb.jpg.0b48454db7056ef383532a93d22ba491.jpg

Edited by apexi
Link to comment
Share on other sites

Motor system malfunction could be the ABS controller itself. If you have intermittent voltage, it could make it read on again/off again and remember, this controller is designed to pulse the system. I would put a solid load test on the battery first, and if it passes, do a very slow recharge, remove the black spacer apexi shows, tighten everything down after a thorough cleaning and then try again.
Link to comment
Share on other sites

I did have that plastic spacer. Took it off this morning.

 

 

 

Warning lights are gone, and everything seems back to normal, but the codes are still there when I read them in the dash. OBDII reader doesn't find any codes. Does the internal reader take some time to reset? The car didn't complete a drive cycle yet since unplugging the battery

Link to comment
Share on other sites

You'll need someone with a GeniSYS or Snap-On scanner to go in and clear the codes. Find a competent local garage and pay them a few bucks to go in and remove the codes and then drive it for a week or two and check again. A regular code reader won't have access to any of the drivetrain codes.
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share



×
×
  • Create New...

Important Information

Terms of Use