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01-11-2019 #41Registered User
- Join Date
- Jan 2019
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- 2
The resolver is the Rotation angle sensor. so no need to worry about getting something else or speeding any more time on it has it already works. Toyota has more then one zero point calibration. Yes there is one for the yaw rate sensor, but the one I am referring to is zero point for the torque sensor and at the same time it will sset the steering angle sensor for center. If you have the cable and techstream then the calibration will be in the EPS module then on the left side bullets you will select the utilities and under there with either say initialization or zero point. then follow the instruction. something like center the steering wheel and stay still for 6 seconds. then it is calibrated. ECU know where center is for the steering wheel and torque sensor neutral position. The only 2 things you need to focus on is one sending the RPM over can which you already have and then sending the speed signal over can. This was I the main reason I went with the non ABS yaris ecu has you not only need to figure out the HEX code for speed. but the write a code that will take the analog signal and convert to the correct HEX code. But I will love to see someone get it worked out has it would open a lot more option of EPS system. Like the Lexus IS350 EPS rack and pinion that I want to put on my 87 Toyota supra.
one other thing you should do is go to techinfo.toyota.com you can sign up for a 2 day for like 20 bucks. print out all the repair manual pages for the EPS system. but also click on the 'new car features" will just be the abbreviation "NCF". for the 2014 scion FR-S. This will give you a way better explanation of how the system is built and works.