4th Gear
WARNING: This page is about a different car, the 2016 Ford Transit Connect. However, it is still accessible from the selected car via links, so may be relevant.
4th Gear Clutch Application Chart
| Gear | Forward (1, 2, 3, 4) | Direct (3, 5, R) | Intermediate (2, 6) | Low / Reverse (L, R) | Overdrive (4, 5, 6) | Low-OWC |
|---|---|---|---|---|---|---|
| 4th Gear D | H | D | ||||
| Planetary Components | Front sun | Rear sun | Rear sun | Rear carrier/center ring | Rear carrier/center ring | Rear carrier/center ring |
H = Holding
D = Driving
4th Gear Solenoid Operation Chart
| Base Selector Lever Position | PCM Commanded Gear | SSA NL (1, 2, 3, 4) | SSB NH (3, 5, R) | SSC NL (2, 6) | SSD NH (L, R, 4, 5, 6) | SSE (On/ Off) NC | TCC NL |
|---|---|---|---|---|---|---|---|
| D | 4 | On | On | Off | Off | Off | On/Off |
NC = Normally Closed
NH = Normally High
NL = Normally Low
Powerflow
- In fourth gear the forward clutch holds the front sun gear stationary.
- The overdrive clutch drives the rear planetary carrier/center ring gear.
- Power flows from turbine shaft to the center sun gear and center ring gear.
- The two inputs to the center planetary carrier combine and transfer torque to the front ring gear.
- The front ring gear transfers the torque to the front planetary carrier and onto the output hub to produce a gear ratio of 1.41.