
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