Lock-Up System: Notes

WARNING: This page is about a different car, the 2013 Honda Odyssey, 2012 Honda Odyssey, and 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

The lock-up mechanism of the torque converter clutch operates in D (2nd, 3rd, 4th, and 5th gears), and D with the D3 driving mode (2nd and 3rd gears). The pressurized fluid is drained from the back of the torque converter through a fluid passage, causing the torque converter clutch piston to be held against the torque converter cover. As this takes place, the mainshaft rotates at the same speed as the engine crankshaft. Together with the hydraulic control, the PCM optimizes the timing and amount of the lock-up mechanism. When shift solenoid valve D is turned on by the PCM, shift solenoid valve D pressure switches the lock-up shift valve and lock-up ON and OFF. A/T clutch pressure control solenoid valve C, the lock-up control valve, and the lock-up timing valve control the degree of lock-up.