Automatic transmission control unit
K38 - Starter interlock relay module; N₂/2 - SRS control unit; N15/1 - 5-speed automatic transmission control unit (TCM); N15/3 - Transmission Control Module (TCM); N54 - RCL control unit
Pin assignment of the 13-pin transmission connector
1 - 3 revolution sensor (Y3/6n3); 2 - Solenoid valve for modulating pressure regulation (Y3/6y1); 3 - 2 revolution sensor (Y3/6n2); 4 - Input signal of temperature sensor (Y3/6b1) and starter interlock contact (Y3/6s1); 6 - Supply voltage of electromagnetic valves; 7 - Sensor supply voltage; 8 - 2-3 shift solenoid valve (Y3/6y5); 9 - 3-4 shift solenoid valve (Y3/6y4); 10 - Solenoid valve for switching pressure regulation (Y3/6y2); 11 - Solenoid valve (rotation converter locks) (Y3/6y6); 12 - Sensor housing; 13 - 1-2/4-5 shift solenoid valve (Y3/6y3)
Input and output signals of the AT 722.6 control unit and the CAN data bus
N15/3 - ETC control unit; X11/4 - DLC connector; Y3/6b1 - ATF temperature sensor; Y3/6n2 - Speed sensor 2; Y3/6n3 - Speed sensor 3; Y3/6s3 - Starter interlock contact; Y3 / 6y1-Solenoid valve for controlling pressure modulations; Y3 / 6y2-Switching solenoid valve; Y3 / 6y3-Switching solenoid valve 1-2 and 4-5; Y3 / 6y4-Switching solenoid valve 3-4; Y3 / 6y5-Switching solenoid valve 2-3; Y3 / 6Y6-Torque Converter Lockout PWM Solenoid Valve; A1 - Instrument panel; CAN - Engine Compartment Bus; N3/10 - Control unit ME-SFI [ME]; N15/3 - ETC control unit; N15/5 - Electronic gearshift lever control unit; N47 - Traction control unit; N73 - EIS control unit
Tasks
The ETC control unit (N15/3) determines the current operating parameters of the vehicle and controls sequential gear shifting based on shift ease and driving parameters.
The electromagnetic switching valves are activated by a command from the ETC control unit (N15/3). The required pressure value is calculated based on the incoming data and the necessary adjustment is made to the transmitted torque.
The following data received from other systems is processed:
Control unit ME-SFI (N3/10)/CDI (N3/9)
- Engine torque;
- Gear shifting;
- Emergency mode;
- Tempostat functioning;
- Activating the speed limiting system;
- Starter operation;
- Activating kickdown mode (as on models 01.06.02);
- Engine operating parameters.
Electronic gearshift lever control unit (N15/5):
- Lever position;
- Transmission Mode Switch Sensor (S16/5);
- Kickdown mode activation switch sensor (S16/6) (until 31.05.02).
Traction control unit (N47):
- Wheel speed;
- Brake torque;
- The fact of pressing the foot brake pedal;
- Parking brake condition.
EIS Control Unit [EZS] (N73):
- Condition of contact terminals;
- Transmission option.
Instrument panel (A1):
- Selector lever position/gear selected.
Traction control unit (N47):
- Transmission option;
- Information about the selected gear.
Control unit ME-SFI (N3/10)/CDI (N3/9):
- Engine torque;
- Emergency mode;
- Activating the driving mode;
- Selector lever position P/N;
- Transmission Mode Switch Sensor (S16/5);
- Transmission option.