Lock-up Control
The shift solenoid valve E controls the hydraulic pressure to switch the lock-up shift valve and lock-up ON and OFF. The PCM actuates the shift solenoid valve E and the A/T clutch pressure control solenoid valve A to control the torque converter clutch lock-up. When the shift solenoid valve E is turned ON, the lock-up condition starts. The A/T clutch pressure control solenoid valve A regulates and apply the hydraulic pressure to the lock-up control valve to control the amount of the lock-up. The lock-up mechanism operates in 2nd, 3rd, 4th, and 5th gears in the D position, and 2nd and 3rd gears in the D position D3 driving mode.