Mitsubishi Lancer Evolution-VII Workshop Manual page 59

2-14
LIST OF MAIN COMPONENTS
Components
ACD transfer
4WD-ECU
Engine-ECU
ABS-ECU
Throttle position sensor (TPS)
Longitudinal G sensor
Lateral G sensor
Steering wheel sensor
Wheel speed sensor
Stop lamp switch
Parking brake switch
ACD mode indicator lamp
ACD mode switch
Pressure sensor
Hydraulic y
unit it
Electric pump
Directional valve
Proportional valve
<ACD>
Proportional valve
<AYC>
Electric pump relay
AYC torque transfer differential
POWER TRAIN - ACD and AYC
Outline of function
Controls the transmission torque of the hydraulic multi plate clutch by the
hydraulic unit, and adjusts the center differential.
Processes information of various sensors and switches, calculates the hydraulic
multi plate clutch transmission torque and amount of AYC torque movement and
direction, and controls the hydraulic unit on the basis of them.
Sends the engine idling state to the 4WD-ECU.
Outputs the ABS monitor signal to the 4WD-ECU.
Sends the throttle valve opening angle to the 4WD-ECU.
Sends the acceleration in the front and rear directions of the vehicle to the
4WD-ECU.
Sends the acceleration along the side of the vehicle to the 4WD-ECU.
Sends the steering angle and neutral position to the 4WD-ECU.
Sends the wheel speed to the 4WD-ECU.
Sends the brake operating state to the 4WD-ECU.
Sends the operating state of the parking brake to the 4WD-ECU.
p Displays the ACD control mode (TARMAC, GRAVEL, SNOW).
Lights the all mode lamp during fail. (Lights for about 1.5 seconds after the ignition
switch is turned ON)
Switches the ACD control mode (TARMAC, GRAVEL, SNOW).
Sends the pressure of the accumulator to the 4WD-ECU.
Generates oil pressure for clutch operations.
Controls whether to supply the oil pressure to the left or right AYC clutch.
Controls hydraulic supplied to hydraulic multi plate clutch of the ACD.
Controls oil pressure supplied to the AYC clutch.
Supplies the power to the electric pump.
Controls the transmission torque of the left and right clutches according to the
oil pressure from the hydraulic unit, and adjusts the left and right driving power
difference of the rear wheels.