Raw Iron 1
06-18-2002, 09:31 AM
Hello.
For a while Snap-on and Toyota scan tools were the only ones that could clear trouble codes on Toyotas. The old fashion way of disconnecting the battery over night can in itself cause a check engine light, cause a car to fail an emissions test, and it also forces your computer to relearn all the specific operating characteristics of your particular vehicle, during which you may not get max performance out of your engine. If you have done mods it IS a good idea to reboot the computer/disconnect the battery so that it will more quickly recalibrate taking in to consideration your mods at the same time. Also, a reoccuring check engine light usually means that there is a problem and if there is a mechanical problem disconnecting the battery is not going to fix something like a defective knock sensor. I just found out that my Auto Xray EZ-Link scan tool will clear check engine light codes on all American OBD-II Celicas up to and including 2001 models. I just used it to clear a code 440, 441, and 446 which we believe was casued by an overfilled gas tank. These codes relate to the evaperation and purge system. This scanner is nice, but not as nice as the Snap-on or Toyota scan tools. The EZ-Link fits in the palm of your hand and will measure about a dozen operating perameters on late model Celis, reads engine codes, gives a brief description of codes, and can turn off check engine lights. Not a bad little piece and it cost 5 times less than the Snap-on scan tool which I also have (MT-2500 model).
Jason
For a while Snap-on and Toyota scan tools were the only ones that could clear trouble codes on Toyotas. The old fashion way of disconnecting the battery over night can in itself cause a check engine light, cause a car to fail an emissions test, and it also forces your computer to relearn all the specific operating characteristics of your particular vehicle, during which you may not get max performance out of your engine. If you have done mods it IS a good idea to reboot the computer/disconnect the battery so that it will more quickly recalibrate taking in to consideration your mods at the same time. Also, a reoccuring check engine light usually means that there is a problem and if there is a mechanical problem disconnecting the battery is not going to fix something like a defective knock sensor. I just found out that my Auto Xray EZ-Link scan tool will clear check engine light codes on all American OBD-II Celicas up to and including 2001 models. I just used it to clear a code 440, 441, and 446 which we believe was casued by an overfilled gas tank. These codes relate to the evaperation and purge system. This scanner is nice, but not as nice as the Snap-on or Toyota scan tools. The EZ-Link fits in the palm of your hand and will measure about a dozen operating perameters on late model Celis, reads engine codes, gives a brief description of codes, and can turn off check engine lights. Not a bad little piece and it cost 5 times less than the Snap-on scan tool which I also have (MT-2500 model).
Jason