This lead wire powers the transmission shift solenoids so that you get 1st gear for all forward gears and reverse when in reverse. When the larger connector is hooked up, whenever you're shifted into 2nd or Drive, the transmission will be in 2nd gear.
Connector location is the front of the trans near where the shift cable goes.
Fitment
- 1994-1998 Lexus ES300
- 1995-2004 Toyota Avalon
- 1994-2001 Toyota Camry (v6)
- 1999-2003 Toyota Solara (v6)
Shift Lever Gear |
Trans Gear (Both connectors plugged in) |
Trans Gear (Only small connector plugged in) |
Park | Park | Park |
Reverse | Reverse | Reverse |
Neutral | Neutral | Neutral |
Drive | Second | First |
2nd | Second | First |
1st | First | First |
Here's a vid showing the core concept of how it's used. Think of it as a manual trans that's electronically controlled by whatever gear you put it in.