System Description: Notes

ECM controls torque converter clutch solenoid valve with the signals below.

Fig 1: Torque Converter Clutch Solenoid Valve System Description

Courtesy of NISSAN MOTOR CO., U.S.A.

The ECM controls torque converter clutch solenoid valve to cancel the lock-up condition of A/T. When the solenoid valve is turned on  , lock-up is cancelled.  When the solenoid valve is turned off, A/T lock-up is operational.