Here is how to access the secret menu on the Pioneer T1809 head unit. In this menu you can control the illumination color, subwoofer, and iPod direct control.- With the car on but the HU off, press and hold the menu button for about 3 seconds.
- You should then hear a beep and then a new menu that you can’t access when the HU is on will appear.
- Use the dial to scroll throu the setting choices which include…
- the illumination color (blue or orange)
- iPod direct control
- Subwoofer control (which is set as off default)
- Scion Sound Processing car type and
- The opening desplay when you turn car on
- Just turn the subwoofer control on and this allows you to get the sub pre amp output on and now you can control it from the normal menu screen…
Enjoy!
via Club Scion tC – Forums – Installed amp/sub to stock HU and no output….