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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 22, 2025
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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2016 Toyota 4Runner SR5 4.0L No Start VIN: JTEZU5JR3G
I have the Code U100 multiple times. I have no check engine light, and I can't communicate with the PCM or the TCM. I have tried unplugging multiple sensors and have checked for the 5-volt reference, and I do have it. I have used two different scanners wit... Trouble codes: U0100
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