1st Gear

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Clutch Application Chart

Gear

Forward (1, 2, 3, 4)

Direct (3, 5, R)

Intermediate (2, 6)

Low / Reverse (1, R)

Overdrive (4, 5, 6)

Low-OWC

1st Gear D

H ⁽¹⁾

Planetary Components

Front planetary carrier-to-No. 3 sun gear

Front carrier-to-No. 2 sun gear

No. 2 sun gear

Rear planetary carrier

Input shaft-to-rear planetary carrier

Rear planetary carrier

⁽¹⁾	Low/Reverse clutch is holding until vehicle reaches 5 mph.

D = Driving

H = Holding

Solenoid Operation Chart

Selector Lever Position

Commanded Gear

SSA NL (1, 2, 3, 4)

SSB NH (3, 5, R)

SSC NL (2, 6)

SSD NL (1, R)

SSE NH (4, 5, 6)

TCC NL

Off

On/Off ⁽¹⁾

⁽¹⁾	TCC may be commanded ON depending on transmission fluid temperature.

NH = Normally High

NL = Normally Low

Powerflow

In 1st gear, SSA is commanded ON by the PCM/ TCM to apply the forward (1, 2, 3, 4) clutch. In manual 1st gear, SSD is commanded ON by the PCM/ TCM to apply the low/reverse (1, R) clutch. In 1st gear, the forward (1, 2, 3, 4) clutch connects the front carrier to the No. 3 sun gear. With the rear carrier held stationary by the low One-Way Clutch (OWC) clutch, power is transferred from the No. 3 sun gear through the rear planetary gears to the ring gear/output shaft at a 3.974 to 1 ratio. Because the One-Way Clutch (OWC) is the holding element, there is no engine braking. The low/reverse (1, R) clutch is applied in manual 1st gear to provide engine braking.

Courtesy of FORD MOTOR COMPANY