Using Tuneboy Diagnostics to test the Idle Stepper Motor
Connect the Tuneboy cable to the bike and the PC. Ensure the kill switch is on and switch on the bike’s ignition. Start Tuneboy Diagnostics and click on the Sensors light on top of the dash.
In the Sensors dash the second item on the second column is TPS volts. Make a note of the voltage. Mine was reading 0.705 volts.
Click on the reset ISCV button on the bottom left hand corner.
The voltage should go to 0.60 volts +/- 0.02 volts. Mine showed to .625 volts. If you twist the throttle you should notice an increase in voltage, and on shutting off the throttle mine went back again to .625 volts.
Click the reset ISCV button again and the voltage should increase by 0.12 volts. The Triumph manual states that this voltage increase should be 0.15 volts +/- 0.05 volts. Mine went to 0.79 volts.
Using my numbers as an example the final voltage should be 0.625 + 0.15 = 0.775 volts.
Since this voltage can be +/- 0.05 then anything between 0.825v and 0.725 would have been acceptable.
If your values are outside these parameters then you’re going to need the Triumph manual to reset the Idle Stepper Motor.
If the voltages are within limits then click the reset ISCV button again and don’t touch anything for 15 seconds.
When the scrolling message at the bottom of the green screen stops, click the reset adapt button on the bottom right hand side.