Principles of Operation

WARNING: This page is about a different variant/trim than selected.

For A clutch operation, REFER to: A Clutch .

A clutch

Condition	Possible Sources	Action
A clutch does not apply	SSA is mechanically stuck off	INSTALL a new solenoid. REFER to: SOLENOID .
	A clutch control valve stuck off	DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: MAIN CONTROL VALVE BODY .
	A CL CONTR, 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 .
	A clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary.
	A clutch always applied	SSA mechanically stuck	INSTALL a new solenoid. REFER to: SOLENOID .
		A clutch control valve stuck on	DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: MAIN CONTROL VALVE BODY .
		A CL CONTR, hydraulic circuit cross leaks	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leaks or damage. INSTALL new components as necessary. REFER to: MAIN CONTROL VALVE BODY .
Main control to SOWC seal blocked/restricted.		INSPECT the seal for damage/debris. CLEAN and/or INSTALL new components necessary. REFER to: MAIN CONTROL VALVE BODY .
A clutch friction plates		INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: TRANSMISSION
A clutch delayed/soft/slipping apply	Incorrect transmission strategy programmed into PCM / TCM.	PERFORM the Transmission Strategy Download, REFER to: TRANSMISSION STRATEGY DOWNLOAD .
	Low line pressure	PERFORM line pressure test. REFER to: Special Testing Procedures .
	SSA mechanically sticking	INSTALL a new solenoid. REFER to: SOLENOID
	A clutch control valve sticking	DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: MAIN CONTROL VALVE BODY .
	A CL CONTR, hydraulic circuits 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 .
	Main control to SOWC seal missing/blocked/restricted/damaged.	INSPECT the seal. CLEAN and/or INSTALL new components necessary. REFER to: MAIN CONTROL VALVE BODY .
	A clutch piston seals	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: TRANSMISSION
	A clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: TRANSMISSION
A clutch harsh apply	Incorrect transmission strategy programmed into PCM / TCM.	PERFORM the Transmission Strategy Download, REFER to: TRANSMISSION STRATEGY DOWNLOAD
	High line pressure	PERFORM the line pressure test. REFER to: Special Testing Procedures
	SSA mechanically sticking	INSTALL a new solenoid. REFER to: SOLENOID .
	A clutch control valve sticking	DISASSEMBLE, CLEAN and INSPECT the valves. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: MAIN CONTROL VALVE BODY .
	A CL CONTR hydraulic circuit blocked/leaking	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leaks or damage. INSTALL new components as necessary. REFER to: MAIN CONTROL VALVE BODY .
	Main control to SOWC seal missing/blocked/restricted/damaged.	INSPECT the seal. CLEAN and/or INSTALL new components necessary. REFER to: MAIN CONTROL VALVE BODY .
	A clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: TRANSMISSION
	A clutch piston return springs	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: TRANSMISSION