It's my '91 GT convertible, but AFAIK the system is the same as the alltrac (speed sensor for sure), and there are some seriously knowledgeable people here...but I didn't see anything similar when I searched, mostly people removing the system.
The cruise has always worked flawlessly on this car. Probably put 30k miles on it in the ~5 years I've had it (the salt-free days are pretty numbered up here in northern MN), never had a problem.
About a month ago, I put LED taillights and an electronic flasher in it, the cruise immediately started acting up. Thanks to the diagnostic handshake (hold "set" or "resume" while turning the system on) in the BGB, it's pretty easy to narrow down the symptoms.
1st, EVERYTIME the turn signals come on, it activates the "cancel" circuit in the cruise. This is not intermittent. This led me to believe that the flasher was causing some interference. Since I had bought the cheapest chinese flasher I could find, I ordered a genuine USA made one from RockAuto and swapped it out, no change. The chinese flasher causes no problems in my '00 Outback.
2nd, periodically the speed signal will drop out. I haven't found almost any pattern to when it works or doesn't. Seems to be a better chance that it'll work in the morning, but not always. It will frequently drop out while cruising, with zero lights on (which is what's making me question whether the LEDs/flasher are related at all). Of course, if the speed signal drops out while the system is engaged, the car has to be restarted to try again, so I'm getting good at turning off and restarting the car on the highway :twisted:
Of course, I didn't save any of the old parts, I had a couple burned out bulbs (which is what started this), and the base of the original flasher broke when removing, so I chucked it all. I suppose my next option is to either buy new incandescent for the Celica, or swap the LEDs into my Outback (which would require some fronts and rears on the Outback to cover them all, and possibly cause issues there). So I thought I'd spitball here to see if there's anything I might have missed.
When I bought the car, the transmission was damaged. I replaced it with an S51 from a Camry for the taller gears, I swapped the speed sensor over, speedometer works flawlessly, though, so I'm ASSuming that everything is connected correctly there (at least mechanically). The wiring diagrams seem to imply that there's some speed signal coming from the gauge, but I had the speedo cable break and the cruise still worked.
Anyone had intermittent random speed sensor failure? Think of anything else to check?
The cruise has always worked flawlessly on this car. Probably put 30k miles on it in the ~5 years I've had it (the salt-free days are pretty numbered up here in northern MN), never had a problem.
About a month ago, I put LED taillights and an electronic flasher in it, the cruise immediately started acting up. Thanks to the diagnostic handshake (hold "set" or "resume" while turning the system on) in the BGB, it's pretty easy to narrow down the symptoms.
1st, EVERYTIME the turn signals come on, it activates the "cancel" circuit in the cruise. This is not intermittent. This led me to believe that the flasher was causing some interference. Since I had bought the cheapest chinese flasher I could find, I ordered a genuine USA made one from RockAuto and swapped it out, no change. The chinese flasher causes no problems in my '00 Outback.
2nd, periodically the speed signal will drop out. I haven't found almost any pattern to when it works or doesn't. Seems to be a better chance that it'll work in the morning, but not always. It will frequently drop out while cruising, with zero lights on (which is what's making me question whether the LEDs/flasher are related at all). Of course, if the speed signal drops out while the system is engaged, the car has to be restarted to try again, so I'm getting good at turning off and restarting the car on the highway :twisted:
Of course, I didn't save any of the old parts, I had a couple burned out bulbs (which is what started this), and the base of the original flasher broke when removing, so I chucked it all. I suppose my next option is to either buy new incandescent for the Celica, or swap the LEDs into my Outback (which would require some fronts and rears on the Outback to cover them all, and possibly cause issues there). So I thought I'd spitball here to see if there's anything I might have missed.
When I bought the car, the transmission was damaged. I replaced it with an S51 from a Camry for the taller gears, I swapped the speed sensor over, speedometer works flawlessly, though, so I'm ASSuming that everything is connected correctly there (at least mechanically). The wiring diagrams seem to imply that there's some speed signal coming from the gauge, but I had the speedo cable break and the cruise still worked.
Anyone had intermittent random speed sensor failure? Think of anything else to check?