Mazda CX-9 2007 Service Highlights page 248

AUTOMATIC TRANSAXLE [AW6A-EL, AW6AX-EL]
3GR
C2 CLUTCH B2 BRAKE
Power transmission pathway
[Operating components: C1 clutch, C3 clutch]
Planetary gear unit
1. Input shaft (rotates clockwise) [same revolution as the torque converter's turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C1 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary rear sun gear]
6. C3 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary middle sun gear]
7. Rear planetary gear component (rotates clockwise)
[because the rear planetary short pinion gear and the rear planetary long pinion gear are engaged, both the
pinion gears are locked due to the difference in the rotational directions, and kinematic energy of the rear
planetary sun gear and rear planetary middle sun gear is transmitted to the rear planetary ring gear]
8. Rear planetary ring gear (rotates clockwise) [same revolution as the rear planetary carrier]
9. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and the
revolution are same as the rear planetary ring gear]
10. Counter gear (rotates counterclockwise)
11. Differential ring gear (rotates clockwise)
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
05-17–12
ONE-WAY
COUNTER DRIVE GEAR
CLUTCH
B1 BRAKE
COUNTER GEAR
Front
Rear
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
Input, Locked, Output
Input: Ring gear
Locked: Sun gear
Output: Carrier
Input: Rear Sun gear, Middle Sun gear
Locked: -
Output: Ring gear
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