Unsuccessful attempt at Tach learning:

If your first attempt at Tach learning is unsuccessful there could be one or more different causes. All cars are different and some are easier to learn the Tach signal on then others, it’s not uncommon to repeat the Tach learning process a few times to get everything working smoothly. If you are confident you have securely connected the iKey’s Yellow Tach wire to a recommended source and route it properly. Simply repeat the learning process one or two more times to see if this solves your issue You may also want to try improving the signal strength by revving the motor up a few hundred RPM’s and then pressing & releasing the Brake pedal.