Torque Converter Clutch (TCC)

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Front Pump Output Test

The front pump output test can be used to detect a stuck or inoperative main control torque converter regulator valve.

Using a diagnostic scan tool, perform a self-test and check for DTCs.
RECORD the RPM and TSS data while raising the engine RPM.
If the TSS stays at 0 RPM the torque converter is malfunctioning.
INSPECT the main control torque converter regulator valve. Refer to: Main Control Valve Body .

For torque converter operation, REFER to: Torque Converter .

Condition	Possible Sources	Action
TCC does not apply	TCC solenoid mechanically stuck OFF	INSTALL a new TCC solenoid. Refer to: Shift Solenoids (SS) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .
	Bypass Clutch Control 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 .
	Converter Release 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 .
	CAPLY, CREL, CAPLY F, VFS6 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 .
	TCC friction material worn or damaged	INSTALL a new TCC. Refer to: Transmission - Removal . Refer to: Transmission - Installation
TCC always applied/stalls vehicle	TCC solenoid mechanically stuck ON	INSTALL a new TCC solenoid. Refer to: Shift Solenoids (SS) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .
	Bypass Clutch Control 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 .
	Converter Release 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 .
	CAPLY, CREL, CAPLY F, VFS6 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 .
	TCC friction material worn or damaged	INSTALL a new TCC. Refer to: Transmission - Removal . REFER to: Transmission - Installation .
TCC cycles, shudders or chatters	Incorrect Transmission Strategy programmed into PCM.	PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .
	TCC solenoid mechanically sticking	INSTALL a new solenoid. Refer to: Shift Solenoids (SS) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .
	Bypass Clutch Control 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 .
	Converter Release 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 .
	CAPLY, CREL, CAPLY F, VFS6 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 .
	TCC friction material worn or damaged	INSTALL a new TCC. Refer to: Transmission - Removal . REFER to: Transmission - Installation .