Quote:
Originally Posted by robains
Does anyone know which wire the speed sensor wire is from/to the ECU?
This is on a 07 Exige S.
Thanks, Rob.
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As mentioned, there are 4 wires going to the ECU for speed. They run down the spine/center console of the car, through the grommet under the air box and join one of the harnesses that goes to the ECU.
All 4 are different shades of lime green. LG/silver, LG, LG/YLW, can't remember the 4th one... Nevertheless, they're not all that great for monitoring speed unless you have a super sensative datalogger, as they pulse like 32 times per revolution. That's about 24,000 pulses per mile which is way more pulses than what most data loggers like. About 80 mph will overwhelm some loggers out there, as most wheel speed sensors pulse 1-4 times pre rev_ not 30+ times... In addition, that many pulses creates potential for a lot of noise in the speed signal as well.... You can purchase the OE celica speed sensor that goes in the tranny from Toyota. I think it's 2 pulses per rev if I remember right (very well be mistaken there)... just my 2 pennies for the jar...
Best,
Phil