Mazda RX-8 Workshop Manual page 2299

10. Disconnect the coupler component from the clamps.
11. Remove the lock plate from the control valve body component.
12. Pull the TFT sensor from the control valve body component.
NOTE:
Be sure that the coupler component does not interface with the control valve
body component when installing.
13. Fix the coupler component with tape to the transmission case as shown in the figure.
14. Remove the detent spring cover and detent spring from the control valve body component.