Lincoln Corsair: Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40 / Diagnosis and Testing - Hydraulic Selectable One-Way Clutch Assembly

Lincoln Corsair 2020-2026 Service Manual / Powertrain / Automatic Transmission / Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40 / Diagnosis and Testing - Hydraulic Selectable One-Way Clutch Assembly

Symptom Chart

For selectable one-way clutch operation,
REFER to: Hydraulic Selectable One-Way Clutch Assembly (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation).

Hydraulic Selectable One-Way Clutch (OWC)

Condition	Possible Sources	Action
Selectable one-way clutch (OWC) does not apply	SSD is mechanically stuck off	INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
	Hydraulic selectable one way clutch (OWC) control or limit valve valve stuck off	DISASSEMBLE, CLEAN and INSPECT the control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation). PERFORM the Transmission Strategy Download,REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, General Procedures).
	SOWC APPLY hydraulic circuit blocked/leaking	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
	Hydraulic selectable one-way clutch (OWC) actuator	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
Hydraulic Selectable one-way clutch (OWC) always applied	SSD mechanically stuck	INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
	Hydraulic selectable one way clutch (OWC) control or limit valve valve stuck on	DISASSEMBLE, CLEAN and INSPECT the control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation). PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, General Procedures).
	Hydraulic selectable one-way clutch (OWC) actuator	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).

Diagnosis and Testing - C Clutch

Symptom Chart For C clutch operation, REFER to: C Clutch (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation)...

Diagnosis and Testing - E Clutch

Symptom Chart E clutch For E clutch operation, REFER to: E Clutch (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation)...

Other information:

Lincoln Corsair 2020-2026 Service Manual: Description and Operation - Hydraulic Selectable One-Way Clutch Assembly

Hydraulic Selectable One-Way Clutch (SOWC) Assembly Item Description 1 Hydraulic SOWC assembly 2 Reaction/overdrive planetary carrier 3 Transmission case Hydraulic Selectable One-Way Clutch (SOWC) Cutaway View Hydraulic Selectable One-Way Clutch (SOWC) The hydraulic SOWC contains a One-W..

Lincoln Corsair 2020-2026 Service Manual: General Procedures - Transmission Fluid Exchange

Materials Name Specification Motorcraft® MERCON® ULV Automatic Transmission FluidXT-12-QULV WSS-M2C949-A, MERCON® ULV Connect With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting (100-02) . Use the Fluid Exchanger to change the fluid. Material: Motorcraft® MERCON® ULV Automatic Transmission Fluid / XT-12-QULV (WS..

Selecting a Drive Mode. DRIVE MODES

Selecting a Drive Mode

Note: Drive mode changes may not be available when the ignition is off.

Lincoln Corsair. Selecting a Drive Mode. DRIVE MODES