Forward Clutch (A) Hydraulic Circuits

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

To apply the forward clutch (A), the manual valve must be in the DRIVE, 3, 2 or 1 position to provide line pressure to the clutch A regulator valve through the DRIVE circuit.

For the forward clutch (A) to apply, SSA provides regulated solenoid pressure from the SREG circuit to the clutch A regulator and latch valves through the VFS1 circuit to position the valves to apply the forward clutch (A). As the forward clutch is applied, SSA increases pressure to the clutch A regulator and latch valves.

The clutch A regulator valve provides regulated line pressure to the CL A circuit to apply the forward clutch (A).

Fig 1: 6R80 Forward Clutch Hydraulic Circuits Diagram (In 1st Gear Through 4th Gear)

Courtesy of FORD MOTOR CO.

The forward clutch (A) is released when the manual valve is in the NEUTRAL, REVERSE or PARK position or the when the manual valve is in the DRIVE position with the transmission in 5th or 6th gear.

SSA lowers pressure to the clutch A regulator and latch valve to position the valves to lower the regulated line pressure in the CL A circuit to release the clutch.

When the forward clutch (A) is released, the clutch A regulator valve directs exhaust circuit pressure from the CL EXH circuit to the CL A circuit to fill the circuit and the forward clutch (A) with fluid at low pressure, approximately 21 kPa (3 psi).

Fig 2: 6R80 Forward Clutch Hydraulic Circuits Diagram (Released In 5th And 6th Gear)

Courtesy of FORD MOTOR CO.