System Description [04/2013 - ]

FUNCTION OF MAIN COMPONENTS

Component		Function
Combination Meter Assembly	Multi-information display (AWD warning)	Displays a warning to the driver when the system is malfunctioning.
Combination Meter Assembly	Slip indicator light	Notifies driver that the current road surface is slippery.
Wheel Speed Sensors		Detect the wheel speed of each wheel.
Throttle Position Sensor		Detects the throttle valve position and outputs it to the ECM.
Park/neutral Position Switch Assembly		Detects the shift position of the transmission and outputs it to the ECM.
Stop Light Switch Assembly		Detects when the brake pedal is depressed.
Steering Sensor		Detects the turning of the steering wheel.
Transfer control solenoid assembly		Controls hydraulic pressure of the center differential control limiting clutch using signals from the 4WD ECU assembly.
4WD ECU Assembly		Detects the signals from each sensor via the skid control ECU (brake actuator assembly) to operate the transfer control solenoid assembly and control the system.
ECM		Outputs signals such as the shift position signal, throttle position signal, and other signals to the 4WD ECU assembly.
Skid Control ECU (Brake Actuator Assembly)		Detects the signals from each sensor and outputs them to the 4WD ECU assembly.

DRIVING FUNCTION

Vehicle Condition	Status
Control at vehicle start up	This controls the amount of sideways sliding that occurs at the rear of the vehicle when accelerating from a stop to improve acceleration and hill climbing capacity.
Slip control at vehicle start up	This helps prevent the vehicle from sliding sideways, to accelerate from a stop with the steering wheel turned and ensures a stable start up and steerability.
Slip control	This ensures high turning performance and stability which is not affected by road surface conditions during mid and high speed driving.
Control during acceleration	This controls straight-line driving when accelerating during mid and high speed driving to ensure straight-line stability of the vehicle.