Nissan automatic transmission control unit
Input connectors
* 16-pin main relay connector:
* A, B: Supply voltage
*C: Ignition
*D: Generator load
*E: Selector position switch
*F: Ground
*G: Tail light
*H: Overload protection
*J: Earth
*K: Throttle position
* L: Tachometer
*M: Vehicle speed sensor
*N: Shift Position Sensor
*P: Transmission fluid temperature sensor
* 25-pin control connector:
* A, B: Supply voltage
*C: Ignition
*D: Generator loading
*E: Selector position switch
*F: Ground
*G: Tail light
*H: Overload protection
*J: Earth
*K: Throttle position
* L: Tachometer
*M: Vehicle speed sensor
*N: Shift Position Sensor
*O: Transmission fluid temperature sensor
*P: Pressure control solenoid valve
*Q: Shift solenoid solenoid valve
*R: Torque converter lock-up solenoid valve
*S: Downshift solenoid valve
*T: Overdrive solenoid valve
*U: Solenoid valve lock solenoid
*V: Reset solenoid valve
*W: Clutch control solenoid solenoid valve
*X: Traction control solenoid valve
*Y: Start Control Solenoid Valve
* Z: Shift Shaft Position Sensor
Internal Components
* Microprocessor (MCU)
* Memory (ROM, RAM)
* Power module
* Various solenoid valves
* Sensors
Scheme
[Link to a detailed diagram of the Nissan automatic transmission control unit](link to the diagram)