Torque Converter Clutch (TCC)

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

For torque converter operation, REFER to: Main Control Valve Body .

Condition	Possible Sources	Action
TCC does not apply	TCC solenoid mechanically stuck OFF	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) .
	TCC Regulator Valve stuck OFF	DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking	DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	TCC friction material worn or damaged	INSTALL a new TCC. REFER to: Transmission .
	TCC solenoid dampner missing or damaged.	DISASSEMBLE, CLEAN and INSPECT the TCC solenoid dampner. If dampner is missing or damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	Converter feed blow-off valve missing.	DISASSEMBLE, CLEAN and INSPECT the converter feed blow-off valve, if missing INSTALL a new main control. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
TCC always applied/stalls vehicle	TCC solenoid mechanically stuck ON, TCC regulator valve spring broken or spring stuck in the compressed position.	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) . TCC solenoid mechanically stuck OFF REFER to: Transmission Strategy Download . If TCC regulator valve spring is broken, stuck or missing, INSTALL a new main control. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	TCC Regulator Valve stuck ON	DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	TCC friction material worn or damaged	INSTALL a new TCC. REFER to: Transmission .
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking	DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
TCC cycles, shudders or chatters	Incorrect transmission strategy programmed into the TCM	PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .
	TCC solenoid mechanically sticking	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) .
	TCC Regulator Valve stuck ON	DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking	DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control. REFER to: Main Control Valve Body . REFER to: Main Control Valve Body - Vehicles With: Column Shift (307-01).
	TCC friction material worn or damaged	INSTALL a new TCC. REFER to: Transmission .