Layout diagram of the components of the electronic control system of the AT
N15/3 - Transmission Control Module (TCM); S16/6 - Kickdown mode activation switch sensor; Y3/6 - Electrical unit of the electrohydraulic control unit for shifting
Design of the electro-hydraulic shift control unit
2a - Hydraulic block; 11 - 13-pin connector; Y3/6 - Electric Shift Control Unit; Y3/6b1 - ATF temperature sensor; Y3/6n2 - 2 rpm sensor; Y3/6n3 - 3 rpm sensor; Y3/6s3 - Start interlock contact; Y3/6y1 - Solenoid valve for pressure modulation control; Y3/6y2 - Solenoid valve for pressure control of switching; Y3/6y3 - Solenoid valve for switching 1-2 and 4-5; Y3/6y4 - Solenoid valve for switching control 3-4; Y3/6y5 - Solenoid valve for switching control 2-3; Y3/6y6 - Electromagnetic valve of the PWM lock-up of the torque converter
Design of the selector module (without the function of sequential range selection, - models produced before 31.08.99)
Electrohydraulic shift control unit 13-pin connector terminal identification map
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)
The TCM (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.
Processed parameters
Illustrative material on the principle of data exchange in the AT control system is presented in the illustration.
Input and output signals of the AT 722.6 control unit and the CAN data bus
N15/3 - TCM; 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-E/M switching pressure control valve; Y3 / 6y3-E / M switching valve 1-2 and 4-5; Y3 / 6Y4-E / M switch valve 3-4; Y3 / 6y5-E / M switch valve 2-3; Y3 / 6Y6-E/M PWM torque converter lock valve; A1 - Instrument cluster; CAN - Engine Compartment Network Bus; N3/10 - ECM ME-SFI; N3/9 - ECM CDI; N15/3 - TCM; N15/5 - Electronic selector module; N47 - ETS Traction Control Module; N73 - Electronic Ignition Switch EIS Control Module
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;
- Engine operating parameters.
Electronic selector module (N15/5)
- Selector lever position;
- Transmission Mode Switch Sensor (S16/5);
- Kickdown mode activation switch sensor (S16/6).
ETS control unit (N47)
- Wheel speed;
- Brake torque;
- The fact of pressing the foot brake pedal;
- Parking brake condition.
EIS control unit (N73)
- Condition of contact terminals;
- Transmission option.
Instrument cluster (A1)
- Selector lever position/gear selected.
ETS control unit (N47)
- Transmission option;
- Information about the selected gear.
Control unit ME-SFI (N3/10)/CDI (N3/9)
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- Engine torque;
- Emergency mode;
- Activating the driving mode;
- Selector lever position P/N;
- Transmission Mode Switch Sensor (S16/5);
- Transmission option.