Lock-Up Control

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Engages lock-up clutch in torque converter to prevent torque converter slippage and improve transmission efficiency.
Upon receipt of signals from TCM, controls lock-up solenoid to operate lock-up control valve, adjusts the application pressure and release pressure, and changes the engaging force of lock-up clutch.

LOCK-UP OPERATION CONDITIONS CHART

Select lever	Gear position	Slip lock-up	Full lock-up
D range Manual mode	2	◦	Δ
	3	◦	Δ
	4	◦	◦
	5	◦	◦

Fig 1: Lockup Control Condition Operation Diagram

Courtesy of SUBARU OF AMERICA, INC.