Torque Converter Clutch (TCC) Enable Solenoid
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The torque converter clutch (TCC) enable solenoid valve is used with the lock-up shift valve, lock-up control valve and lock-up timing valve in order to control TCC apply and release in response to the powertrain control module (PCM) commands. When it is energized, it allows the fluid pressure from the TCC pressure control (PC) solenoid valve to be exhausted. When it is de-energized, it allows the fluid pressure to apply to the lock-up shift valve. The PCM has an internal diagnostic circuit to monitor the voltage level to the TCC enable solenoid valve, and receives a return signal.