Brake Clutch Engagement Matrix Tables
WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
All the gear shifts from first to the eighth speed in either direction are called overlapping engagement/disengagement because during the shift, one clutch must maintain the ability to transmit torque with a reduced pressure, until the other clutch is able to take on the torque.
The gear shift is supported by a brief reduction in torque when shifting up, or a brief increase in torque when shifting down. Thanks to the crossed movements, we can say that the freewheel clutches have been replaced by hydraulic clutch control, with a saving in weight and size.
| GEAR | Brake A | Brake B | Clutch C | Clutch D | Clutch E |
|---|---|---|---|---|---|
| REVERSE | X | X | X | ||
| 1st | X | X | X | ||
| 2nd | X | X | X | ||
| 3rd | X | X | X | ||
| 4th | X | X | X | ||
| 5th | X | X | X | ||
| 6th | X | X | X | ||
| 7th | X | X | X | ||
| 8th | X | X | X | ||
| PARK/NEUTRAL | X | X |
| Engaged = X |
Brake/Clutch Engagement Control Solenoid Valves
| GEAR | Brake A | Brake B | Clutch C | Clutch D | Clutch E |
|---|---|---|---|---|---|
| NEUTRAL | X | X | X | ||
| REVERSE | X | X | X | X | |
| 1st | X | X | X | X | |
| 2nd | X | X | X | X | |
| 3rd | X | X | |||
| 4th | X | X | |||
| 5th | X | X | |||
| 6th | |||||
| 7th | X | X | |||
| 8th | X | X |
| Engaged = X |