Symptom Chart

For B clutch operation, REFER to: B Clutch .

B clutch

Condition	Possible Sources	Action
B clutch does not apply	SSB is mechanically stuck off	INSTALL a new solenoid. REFER to: Solenoid .
	B 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 .
	B 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 .
	B clutch piston seals	INSPECT the components for wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission .
	B clutch drum/Reaction sun gear	The B clutch drum and the C clutch hub are the same component. If diagnostics indicate both B clutch and C clutch failures, INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
	B clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
B clutch always applied	SSB mechanically stuck	INSTALL a new solenoid. REFER to: Solenoid .
	B clutch control valve or B clutch latch valve stuck on	DISASSEMBLE, CLEAN and INSPECT the regulator valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body .
	B 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 .
	B clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
B 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 .
	SSB mechanically sticking	INSTALL a new solenoid. REFER to: Solenoid .
	B clutch control valve or B clutch latch valve sticking	DISASSEMBLE, CLEAN and INSPECT the valves. If a bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body .
	B 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 .
	B clutch piston seals	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
	B clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
B 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 .
	SSB mechanically sticking	INSTALL a new solenoid. REFER to: Solenoid .
	B clutch control valve sticking, weak or broken B clutch latch valve spring	DISASSEMBLE, CLEAN and INSPECT the valves. If a bore, valve, or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body .
	B 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 .
	B clutch friction plates	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .
	B clutch piston return springs	INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission .