System Description

Chassis control to integrally control the driving system was adopted.
Chassis control module inputs the necessary information for control from CAN communication and each switch and integrally controls each system. Refer to the following table for systems controlled and input output signals.

Function		Reference
Intelligent trace control function		System Description
Active ride control function		System Description
Automatic brake hold function		System Description
Drive mode selector function		System Description (2WD Models) , System Description (AWD Models)

SYSTEM DIAGRAM

NOTE: AWD control unit is applied to AWD models.

Courtesy of NISSAN NORTH AMERICA, INC.

INPUT SIGNAL AND OUTPUT SIGNAL

Major signal transmission between each unit via communication lines is shown in the following table.

Component parts	Signal description
ECM	Mainly transmits the following signals to chassis control module via CAN communication. Accelerator pedal position signal Engine torque signal Drive mode signal
ABS actuator and electric unit (control unit)	Mainly transmits the following signals to chassis control module via CAN communication. ABS operation signal ABS malfunction signal Brake hold status signal Brake fluid pressure signal Decel G sensor signal Driver brake signal Electric parking brake malfunction signal Electric parking brake operation signal (switch) Electric parking brake status signal Front LH wheel speed signal Front RH wheel speed signal Rear LH wheel speed signal Rear RH wheel speed signal Steering angle sensor signal TCS operation signal TCS malfunction signal VDC status signal VDC malfunction signal VDC OFF signal VDC operation signal Vehicle speed signal Mainly receives the following signals from chassis control module via CAN communication. Yaw moment request signal Drive mode signal
BCM	Mainly transmits the following signals to chassis control module via CAN communication. Ignition ON signal Brake pedal status signal Seat belt buckle switch (driver side) signal Drive mode select switch signal
TCM	Mainly transmits the following signals to chassis control module via CAN communication. Current gear position signal Drive mode signal
Combination meter	Mainly transmits the following signals to chassis control module via CAN communication. Steering effort setting signal Mainly receives the following signals from chassis control module via CAN communication. Automatic brake hold indicator lamp signal Meter display setting signal Drive mode signal
AWD control unit *	Mainly transmits the following signals to chassis control module via CAN communication. Wheel torque signal Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
ADAS control unit 2	Mainly transmits the following signals to chassis control module via CAN communication. Brake torque request signal Yaw moment request signal
Power steering control module	Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal Meter display setting signal Mainly transmits the following signals to chassis control module via CAN communication. Steering effort setting signal

*: AWD models

MAC (MESSAGE AUTHENTICATION CODE)

MAC (Message Authentication Code) is a function that prevents unauthorized communication from other than the ECU with MAC function by secure authentication communication. Chassis control module can write a MAC key required for communication between the ECUs and perform MAC diagnosis.