View Single Post
Old 03-25-2017, 06:02 PM   #2
fdryer
Super Member
fdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond repute
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 43,455
 

2003 L-Series 3.0L Sedan
Default Re: Abs light wont go off

1-What's an OHM reader? Do you mean OBD II reader (On Board Diagnostics II)?

2- Low brake fluid is detected by the sensor in the brake master cylinder reservoir and turns on the brake light. The parking brake switch also turns on the brake light. The brake light does not indicate abs faults.

3-Abs has its own circuits to self diagnose abs issues. When the abs light turns on, it's usually for one of several reasons; cycling on/off at ignition on time as part of automatic system tests, emergency braking with abs activating automatically, and failure occurring with abs at any time. The abs light does not indicate brake faults.

There are two separate issues, the brake system with its brake light and an abs fault with its abs light. Each has its own problem(s). If brakes are worn, especially the front disc brakes, fluid level can drop. Presuming a leak doesn't exist, brakes are checked and repaired as necessary along with replacing brake fluid, at least every time front disc brakes are replaced. The abs light usually means one of several things; wheel speed sensor(s), wiring to each sensor or damaged reluctors (steel toothed rings on each CV joint or wheel hub). Virtually all abs faults are about external issues and not faults to the abs unit sitting near to brake master cylinder.

REWARD EXCELLENCE!

Add to fdryer's Reputation
Rate the quality of this post and help fdryer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fdryer is offline   Reply With Quote