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In position in 2nd, 3rd and 4th, and position in 3rd, pressurized fluid is drained from the back of the torque converter through a passage, causing the lock-up piston to be held against the torque converter cover. As this takes place, the main- The lock-up system controls the range of lock-up according to torque converter clutch (lock-up control) solenoid valves A and B, and the throttle valve. When torque converter clutch solenoid valves A and B activate, modulator pressure trolled by the PCM. NOTE: When used, "left" or "right" indicates direction on the hydraulic circuit. Main Menu Table of Contents |