2014 Corolla, left front wheel well wiring

[bill Klein]

Packrat ate the wiring harness in the left front wheel well, in addition to injector wiring, right headlight wiring, right front speed sensor wiring, etc., Tried as I might, I could not find a schematic for the left wheel well which contained a four wire harness. A green, to the speed sensor, a white with black tracer to door remote alarm , located under the left fender, and two identical blue wires, one to each item. After checking with the dealership and parts store, I gave up and put a meter on the white with black tracer and one blue, set the meter for dc voltage, and hit the remote button on the key, found one blue had a quick 7 to 9 volt pulse, to the other blue there was no pulse, success the blue with the pulse was the pair to the white with the black trace going to the alarm buzzer, which left the other blue to go with the speed sensor, when measured to the green, the meter read 12 volts dc.

 

[CorollaTom]

Congratulations - That's good troubleshooting! You undoubtedly saved yourself a bunch.
There was a time when Toyota was liberal in providing electrical and mechanical info but they and the other car manufacturers, notably Honda, now want to sell it to you...and their manuals are not cheap.