AT2–3 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – OPERATION Component | Function O/D Direct Clutch (Co) | Connect overdrive sun gear and overdrive carrier O/D Brake (Bo) | Prevents overdrive sun gear from turning either clockwise or counterclockwise O/D One–Way Clutch (Fo) | When transmission is being driven by engine, connects overdrive sun gear and overdrive carrier Forward Clutch (C1) | Connects input shaft and front planetary ring gear Direct Clutch (C2) | Connects input shaft and front & rear planetary sun gear 2nd Coast Brake (B1) | Prevents front & rear planetary sun gear from turning either clock-wise or counterclockwise 2nd Brake (B2) | Prevents outer race of F1 from turning either clockwise or counterclockwise, thus preventing front & rear planetary sun gear from turning counterclockwise 1st & Reverse Brake (B3) | Prevents rear planetary carrier from turning either clockwise or counterclockwise No.1 One–Way clutch (F1) | When B2 is operating, prevents front & rear planetary sun gear from turning counterclockwise No.2 One–Way Clutch (F2) | Prevents rear planetary carrier from turning counterclockwise Intermediate Shaft Front Planetary Carrier Rear Planetary Carrier B0 F0 B2 B3 F2 O/D Planetary Carrier C1 F1 O/D Input Shaft C0 C2 Output Shaft O/D Sun Gear Input Shaft Sun Gear O/D Planetary Ring Gear B1 Rear Planetary Ring Gear Front Planetary Ring Gear G02957