ABS Light on, tried code checking Options

[HaRv3sTeR]

So today i brought my car the a local mechanic to change a wheel bearing on the front passenger side. When i got home, i notice that the amber ABS light was staying on all the time. I called them and they told me they might accidentally knocked the sensor and need to check it out. When i realized how expensive such sensor is, i started searching on this forum to fix this the cheapest way. I started by unplugging the battery for 10-15min to reset the system (no luck), also the fuses/relays seems ok. I 'll try soon to do a code checking, volt/amp test on the sensor itself and check if the sensor if actually plugged in correctly.

Questions:

1-where is the sensor located? and how difficult it is to access it?
2-must i use the traditional diagnostic box to do the code checking or the ABS have it's own diagnostic box?
3-do you think it's fair to make the garage pay in case of sensor replacement?
4-do you know if our celica share the same sensor than other toyota models?..or the celica ST? (might help to find them)

thx for the help

This post has been edited by HaRv3sTeR: May 25, 2008 - 8:18 AM

[HaRv3sTeR]

thx for the help...i got one more question (check first post)