Power Flows
Operation of the transmission is controlled by the TCM , which electrically activates various solenoids to control the transmission gear selection.
All gear shifts from 1st to 8th and 8th to 1st are known as 'overlap' shifts. Overlap shifts are during a gear shift 1 clutch must remain capable of transmitting torque at a reduced main pressure until the other clutch is ready to accept the torque.
| ITEM | DESCRIPTION |
|---|---|
| A | Multiplate brake |
| B | Multiplate brake |
| C | Multiplate brake |
| D | Multiplate brake |
| E | Multiplate brake |
| 1 | Ring gear of planetary gear set 1 |
| 2 | Planetary gears of planetary gear set 1 |
| 3 | Sun gear of planetary gear set 1 |
| 4 | Ring gear of planetary gear set 2 |
| 5 | Planetary gears of planetary gear set 2 |
| 6 | Sun gear of planetary gear set 2 |
| 7 | Ring gear of planetary gear set 3 |
| 8 | Planetary gears of planetary gear set 3 |
| 9 | Sun gear of planetary gear set 3 |
| 10 | Ring gear of planetary gear set 4 |
| 11 | Planetary gears of planetary gear set 4 |
| 12 | Sun gear of planetary gear set 4 |
| 13 | Power input from torque converter |
| 14 | Power output to output shaft |
Engine torque is transferred, through operation of single or combinations of clutches to the 4 planetary gear trains. All gear trains are controlled by reactionary inputs from brake clutches to produce the 8 forward gears and 1 reverse gear.
GEAR RATIOS SPECIFICATION
| GEAR | 1ST | 2ND | 3RD | 4TH | 5TH | 6TH | 7TH | 8TH | REVERSE |
|---|---|---|---|---|---|---|---|---|---|
| Ratio | 5.500 | 3.520 | 2.200 | 1.720 | 1.317 | 1.000 | 0.823 | 0.640 | -3.993 |