ABS lights on, ABS speed sensor problem Options

[Richie]

Hi All,

I'm new to 6GC and new to Celica ownership.

Just bought one... clutch went... clutch replace by garage... but then ABS light comes on.
I guess it’s just a wheel speed sensor that they've disconected and not reconnected properly.

Here’s a list of things which I’ve tried so far:

• Extract error code from computer. Result, 32, which according to my manual is “Left front wheels sensor”.
• I slackened off the left side wheel arch protector, just enough to see the connecting plug at the top of the wheel arch. Visually, it appeared to be making a good connection.
• I traced the cable down to the speed sensor, checked it was correctly inserted and the 10mm bolt was done up, which it was. The splines on the rotating hub, which generate the speed sensor signal appear intact.
• Cleared the codes and turned ignition on. But the ABS light remained on.

Can anyone think of a weak point that might have been damaged during the clutch replacement.
Cheers for any helpful hints

[Mr_E]

Heh. I'm trying to sort out a very similar problem.

If you stick a scope or multimeter in series with the circuit, and then turn the car on and spin the wheel, do you get a reading off the sensor?

Is 32 open circuit, or bad reading from sensor?
Have you tried the diag mode yet?

[lagos]

how do u go about pulling abs codes? my light has been on since i swaped and i never took to the to look into it.

[Mr_E]

how do u go about pulling abs codes? my light has been on since i swaped and i never took to the to look into it.
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http://www.babcox.com/editorial/ic/ic30121.htm

[crumpdogg]

My ABS light is on due to a bad wheel bearing in the back right hub. The sensor is getting an irratic signal. Tried to source the part, but cannot replace only the bearings in the back. They do not sell that alone. You have to replace the whole hub assembly. The front bearing can be done alone, but you will need a press.

I would try to get the shop to pay for it if they were the cause. The sensors are very easy to damage while working in their vacinity. Good luck.

[Richie]

Hi Chaps

Just a quick follow up on the ABS problem. The garage took the car back in and replace the speed sensor - all appears to be well.

I'm afraid I did not get a chance to check the duff one using a multimeter which is a shame (sorry Mr_E). Visually the old cable/sensor looked fine, even though it didn't work.

Thank you all for your help, it's greatly appreciated.

[Mr_E]

Happy yours was that easy mate.
I've already replaced the sensor, to no avail.

She's in for a serious wiring check next week (and a clutch + light flywheel)

[Turbo_Lover]

I had the same problem twice. First it was the drivers side. Then the passanger side. I do know that the sensor is a halleffect sensor that reads a magnet as it goes by. When the magnet goes by the sensor sends a ground pulse. There sound be three wires to it. One is positive, one is negative and the other is only negative when the magnite is present.