No Lock-up

The torque converter clutch solenoid valve is turned OFF by the PCM. The lock-up shift valve receives the LC pressure (LA) on the left side, and the modulator pressure (6) on the right side. The lock-up shift valve is in the right side to uncover the port leading the torque converter pressure (92) to the left side of the torque converter. The torque converter pressure (92) becomes the torque converter pressure (94), and enters into the left side of the torque converter to disengage the torque converter clutch. The torque converter clutch is OFF.

Fig 1: Power Flow Diagram - No Lock-up

Courtesy of AMERICAN HONDA MOTOR CO., INC.