Nissan Murano: System / Rab

Nissan Murano (Z52) 2015-2024 Service Manual / Cruise Control & Driver Assistance / Driver Assistance System :: Driver Assistance System / System Description / System / Rab

System Description

SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

Transmit unit Signal name Description
ECM CAN communication Closed throttle position signal Receives idle position state (ON/OFF)
Accelerator pedal position signal Receives accelerator pedal position (angle)
Engine speed signal Receives engine speed
TCM CAN communication Current gear position signal Receives a current gear position
Shift position signal Receives a selector lever position
Output shaft revolution signal Receives the number of revolutions of output shaft
Input shaft revolution signal Receives the number of revolutions of input shaft
ABS actuator and electric unit (control unit) CAN communication ABS malfunction signal Receives a malfunction state of ABS
TCS malfunction signal Receives a malfunction state of TCS
VDC malfunction signal Receives a malfunction state of VDC
Nissan Murano Vehicle speed signal Receives the wheel speed of all four wheels
Brake fluid pressure signal Receives brake fluid pressure
Steering angle sensor CAN communication Steering angle sensor signal Receives the amount of rotation, rotational angle, and rotational direction of the steering wheel
Combination meter CAN communication System selection signal Receives a selection state of each item in "Emergency Brake" selection with the combination meter
Sonar control unit CAN communication Sonar sensor signal Receives obstacle information (existence & distance)
BCM CAN communication Stop lamp switch signal Receives an operational state of the brake pedal
 

Output Signal Item

Reception unit Signal name Description
ECM CAN communication Torque down request signal Transmits a signal to control the electric throttle control actuator.
Combination meter CAN communication Meter display signal RAB system display signal Transmits a signal to display the state of the RAB system on the Nissan Murano vehicle information display
Transmits a signal to display the RAB warning display on the Nissan Murano vehicle information display
RAB warning light signal Transmits a signal to illuminate the RAB system warning light
ABS actuator and electric unit (control unit) CAN communication Brake fluid pressure control signal Transmits a brake fluid pressure control signal to activate the brakes
Around view monitor control unit ITS communication RAB warning signal Transmits a RAB warning signal to indicate a red frame on the display
Warning system buzzer Warning buzzer signal Activates warning system buzzer

FUNCTION DESCRIPTION

  • The RAB system can assist the driver when the vehicle is approaching objects behind your Nissan Murano vehicle’s path.

  • The RAB system detects obstacles behind the vehicle using the parking sensors (1) located on the rear bumper.

OPERATION DESCRIPTION

  • The sonar detects an object approaching, and transmits the object detection signal to ADAS control unit via CAN communication.

  • The ADAS control unit performs the following operations according to the degree of possibility of a collision:

    • Transmits the warning buzzer signal to the ADAS control unit and sounds the warning system buzzer.

    • Transmits the meter display signal to the combination meter and displays the RAB system warning indicator.

    • Transmits the brake fluid pressure control signal to the ABS actuator and electric unit and performs the brake control.

    • Illuminates stop lamp by transmitting signal to BCM.

Operation Condition

ADAS control unit performs the control when the following conditions are satisfied:

  • When the RAB system setting in the vehicle information display is ON.

  • When the Nissan Murano vehicle speed is above approximately 15 km/h (9 MPH).

  • There is a possibility of a collision with the object backward.

No Operation Condition

  • When the RAB system setting in the vehicle information display is OFF.

  • When the Nissan Murano vehicle speed is below approximately 15 km/h (9 MPH).

  • When the object backward is not detected.

Operation Cancellation Condition

The ADAS control unit cancels the operation when the system is under any conditions of the operation cancellation condition:

  • When the system judges that the vehicle comes to a standstill by the system control.

  • When the system malfunction occurs.

  • When the sonar area of the rear bumper is dirty and the measurement of the distance between the object becomes difficult.

NOTE:

The RAB system will be automatically turned on when the engine is restarted.

    I-Fcw

    System Description SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description ABS actuator and electric unit (control unit) CAN communication ABS malfunction signal Receives a malfunction state of ABS...

    I-Da

    System Description SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description ABS actuator and electric unit (control unit) CAN communication Nissan Murano Vehicle speed signal Receives the wheel speed of the four wheels Combination meter CAN communication System selection signal Receives a selection state of each item in “Driver Assistance” selected with the combination meter Steering angle sensor CAN communication Steering angle sensor signal Receives the amount of rotation, rotational angle, and rotational direction of the steering wheel Output Signal Item Reception unit Signal name Description Combination meter CAN communication Meter display signal I-DA status signal Transmits a signal and displays the status on the Nissan Murano vehicle information display Sonar control unit ITS communication Buzzer output signal Transmits a buzzer drive signal to activates the warning system buzzer FUNCTION DESCRIPTION The Intelligent Drive Alertness (I-DA) is controlled by the ADAS control unit control unit...

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