ABS help please, abs light Options

[slvr_celica_GT_8...]

hey guys, whats going on, my ABS light is on in my dash, i cheaked the fuse box and relay and it is still on, im thinking the sensor could be bad? what do u guys think?, thanks kevin.

[Batman722]

The ABS has it's own ABS ECU and if there is a prob with the system (sensor or whatever) it shuts the system down and you have normal braking ability and the ABS light will remain illuminated. You can then read the ABS codes


94-95
ignition in the ON position,
bridge E1 & TC in the diagnostics box, just like checking codes, read the code from the ABS light
codes 31-34 are the sensors @ each wheel.

31 Malfunction of right front wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

32 Malfunction of left front wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

33 Malfunction of right rear wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

34 Malfunction of left rear wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness, and connector

[slvr_celica_GT_8...]

thanks, its been on for like 2 days now and the other day when i was driving i had to suddnely jam on the brakes because of some fool in front of me on the highway and the abs light turned off, after i jamed on the brakes, but a few mintes later it came on again so i dont know ill have to do what u said, thankyou.

[kamax]

The ABS has it's own ABS ECU and if there is a prob with the system (sensor or whatever) it shuts the system down and you have normal braking ability and the ABS light will remain illuminated. You can then read the ABS codes


94-95
ignition in the ON position,
bridge E1 & TC in the diagnostics box, just like checking codes, read the code from the ABS light
codes 31-34 are the sensors @ each wheel.

31 Malfunction of right front wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

32 Malfunction of left front wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

33 Malfunction of right rear wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness and connector

34 Malfunction of left rear wheel speed sensor signal. Check
speed sensor, sensor rotor, wiring harness, and connector

what would i need to use to read the abs code? I am not sure on how to do this but I have the same problem. What tools do I need? and where is the diagnostic box located in the engine bay thanks

[Batman722]

http://www.6gc.net/index.php?action=howto&itu=88

[kamax]

http://www.6gc.net/index.php?action=howto&itu=88

ooo thanks, i thought you needed to buy something to do it =p. much appriciated

[slvr_celica_GT_8...]

yea my abs light is still on im gunna cheak the sensors tomorrow

[kamax]

hmmm i pulled up a 31 and 36. how do i go about fixing this? is it just loose wiring or do i actually have to buy a new sensor?

[tigersvain]

was curious if u ever figured out what the problem was, i just got the same numbers come up when i checked mine.

[94TRDcelica]

First check that the mounting bracket for the senders (attached to the caliper) are in tact and they have not twisted around. This requires taking off the wheels.

It is unlikely that the brackets are damaged because they are pretty rigid and not much can get there with enough force to bend them! But do it anyway!

next, Check all relays and fuese in the fuse box by the ABS ECU.

Next check the connection between the fuse box and the ABS ECU are good.

Then check that the sender wires running through the arches are ok!

Then run a resistance or volt meter accross the terminals in the sender loom! This is in your wheel arch, where the sender connects to the rest of the wire. Disconnect and check for a signal, by runing the rotors by hand, if you have no signal then the senders are bad and need replacing!

Another test to seee if your ABS is working is drive in stratight line and brake hard! Get a second person to watch from the outside and see if the ABS is working! SLvr celica - sounds like your senders are probably on their way out, as the wires could literally be hanging on by a thread! Just replace them, I don't think they cost much!

Hope that helps!

[presure2]

First check that the mounting bracket for the senders (attached to the caliper) are in tact and they have not twisted around. This requires taking off the wheels.

It is unlikely that the brackets are damaged because they are pretty rigid and not much can get there with enough force to bend them! But do it anyway!

next, Check all relays and fuese in the fuse box by the ABS ECU.

Next check the connection between the fuse box and the ABS ECU are good.

Then check that the sender wires running through the arches are ok!

Then run a resistance or volt meter accross the terminals in the sender loom! This is in your wheel arch, where the sender connects to the rest of the wire. Disconnect and check for a signal, by runing the rotors by hand, if you have no signal then the senders are bad and need replacing!

Another test to seee if your ABS is working is drive in stratight line and brake hard! Get a second person to watch from the outside and see if the ABS is working! SLvr celica - sounds like your senders are probably on their way out, as the wires could literally be hanging on by a thread! Just replace them, I don't think they cost much!

Hope that helps!

good post. however, the wheel speed sensors are quite expensive. ~200+ if i remember correctly.