Nissan Pathfinder: Brake Control System - System Description

• Component Parts
• System
• Operation
• Handling Precaution
• Diagnosis System (adas Control Unit 2)

Component Parts Nissan Pathfinder 2022

Rear Automatic Braking System

Component Parts Location

System Nissan Pathfinder Fifth generation

System Description

SYSTEM DIAGRAM

ADAS CONTROL UNIT 2 INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

Output Signal Item

FUNCTION DESCRIPTION

• The Rear Automatic Braking system can assist the driver when the vehicle is backing up and approaching objects directly behind the Nissan Pathfinder vehicle.

  

• When the shift lever is in the R (Reverse) position and the Nissan Pathfinder vehicle speed is less than approximately 15 km/h (7 MPH), the RAB system operates.

• The RAB system detects obstacles behind the Nissan Pathfinder vehicle using the sonar sensors.

• If a risk of a collision with an obstacle is detected when own Nissan Pathfinder vehicle is backing up, the RAB system warning indicator blinks in the vehicle information display, a red frame appears in the center display (with Intelligent Around View Monitor system), and the system chimes three times.

• The system automatically applies the brakes.

  NOTE:

  • After the automatic brake application, the driver must depress the brake pedal to maintain brake pressure.

  • Driver can temporarily cancel the sonar function in the Nissan Pathfinder vehicle, but the RAB system continues to operate.

OPERATION DESCRIPTION

• Sonar detects a object approaching, and transmits the object detection signal to ADAS control unit 2 via CAN communication.

• The ADAS control unit 2 performs the following operations according to the degree of possibility of a collision.

  • Transmits the buzzer output signal to the combination meter and sounds the 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 (control unit) and performs the brake control.

  • Transmits the stop lamp request signal to BCM and turn ON the stop lamp.

NOTE:

• ON/OFF of RAB system is performed with the combination meter.

• The RAB system is automatically turned ON when the engine is restarted.

OPERATION CONDITION

ADAS control unit 2 performs the control when the following conditions are satisfied.

• RAB system: ON

• Vehicle speed: Less than approximately 15 km/h (9 MPH)

• When there is a possibility of a collision with the object backward.

CANCEL CONDITION

The ADAS control unit 2 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.

Fail-safe (ADAS Control Unit 2)

Refer to Fail-safe (ADAS Control Unit 2).

Warning Lamp/Indicator Lamp

Warning Lamp/Indicator Lamp

Name	Design	Function
RAB warning lamp		The RAB warning lamp warns the driver that RAB system is OFF. The RAB warning lamp warns the driver of a malfunction in the RAB system. For layout, Refer to Design(FULL TFT METER) or Design(7 inch Information Display)

Operation Nissan Pathfinder 2022

Operation

SWITCH NAME AND FUNCTION

No.	Switch name	Description
	Steering switch	Using the steering switch, select the [Settings] menu in the information display Select the [Driver Assistance] menu Select the [Emergency Brake] menu Select the [Rear] item to turn the system ON/OFF

SYSTEM DISPLAY

No.	Switch name	Description
	RAB warning lamp	RAB warning lamp indicates that an malfunction condition is present in RAB system When the RAB system turns OFF, the RAB warning lamp will illuminate.
	RAB indicator	Blinks when there is a possibility of a collision with the object backward

DISPLAY AND WARNING

System Display

Handling Precaution Nissan Pathfinder R53

Precautions for Rear Automatic Braking

PRECAUTIONS FOR REAR SONAR SENSORS

• Always keep the rear sonar sensors clean.

• If the rear sonar sensors are dirty, wipe them off with a soft cloth while being careful to not damage them.

• Do not subject the area around the rear sonar sensors to strong impact.

• Do not install any stickers (including transparent stickers) or accessories on the rear sonar sensors and their surrounding areas. This may cause a malfunction or improper operation.

PRECAUTIONS FOR RAB

Failure to follow the warnings and instructions for proper use of the RAB system could result in serious injury or death.

• The RAB system is a supplemental aid to the driver. It is not a replacement for proper driving procedures. Always use the side and rear mirrors and turn and look in the direction to move before and while backing up. Never rely solely on the RAB system. It is the driver’s responsibility to stay alert, drive safely, and be in control of the Nissan Pathfinder vehicle at all times.

• There is a limitation to the RAB system capability. The RAB system is not effective in all situations.

Listed below are the system limitations for the RAB system. Failure to follow the warnings and instructions for proper use of the RAB system could result in serious injury or death.

• When the vehicle approaches an obstacle while the accelerator or brake pedal is depressed, the function may not operate or the start of the operation may be delayed. The RAB system may not operate or may not perform sufficiently due to Nissan Pathfinder vehicle conditions, driving conditions, the traffic environment, the weather, road surface conditions, etc. Do not wait for the system to operate. Operate the brake pedal as soon as necessary.

• If it is necessary to override RAB operation, strongly press the accelerator pedal.

• Always checks surroundings and turn to check what is behind the Nissan Pathfinder vehicle before and while backing up. The RAB system detects stationary objects behind the vehicle. The RAB system does not detect the following objects:

  • Moving objects

  • Low objects

  • Narrow objects

  • Wedge-shaped objects

  • Complex-shaped objects

  • Multiple object in close

  • Objects close to the bumper (less than approximately 1 ft [30 cm])

  • Objects that suddenly appear

  • Thin objects such as rope, wire, chain, etc.

• The RAB system may not operate for pedestrians or animals.

• The RAB system may not operate for the following obstacles:

  • Obstacles located high off the ground

  • Obstacles in a position offset from the Nissan Pathfinder vehicle

  • Obstacles, such as spongy materials or snow, that have soft outer surfaces and can easily absorb a sound wave

• The RAB system may not operate in the following conditions:

  • There is rain, snow, ice, dirt, etc., attached to the sonar sensors.

  • A loud sound is heard in the area around the Nissan Pathfinder vehicle.

  • The surface of the obstacle is diagonal to the rear of the vehicle.

  • The sonar sensors or the area around them are extremely hot or cold.

• The RAB system may unintentionally operate in the following conditions:

  • There is overgrown grass in the area around the Nissan Pathfinder vehicle.

  • There is a structure (e.g., a wall, toll gate equipment, a narrow tunnel, a parking lot gate) near the side of the Nissan Pathfinder vehicle.

  • There are bumps, protrusions, or manhole covers on the road surface.

  • The Nissan Pathfinder vehicle is driving through a draped flag or a curtain.

  • The vehicle is driving on a steep hill.

  • There is an accumulation of snow or ice behind the Nissan Pathfinder vehicle.

  • An ultrasonic wave source, such as another vehicle’s sonar, is near the vehicle.

• Once the automatic brake control operates, it does not operate again if the Nissan Pathfinder vehicle approaches the same obstacle.

• The automatic brake control can only operate for a short period of time. Therefore, the driver must depress the brake pedal.

• In the following situations, the RAB system may not operate properly or may not function sufficiently:

  • The Nissan Pathfinder vehicle is driven in bad weather (rain, fog, snow, etc.).

  • The vehicle is driven on a steep hill.

  • The Nissan Pathfinder vehicle’s posture is changed (e.g., when driving over a bump).

  • The vehicle is driven on a slippery road.

  • The Nissan Pathfinder vehicle is turned sharply by turning the steering wheel fully.

  • Snow chains are used.

  • Wheels or tires other than NISSAN recommended are used.

  • The brakes are cold at low ambient temperatures or immediately after driving has started.

  • The braking force becomes poor due to wet brakes after driving through a puddle or washing the Nissan Pathfinder vehicle.

• Turn the RAB system off in the following conditions to prevent the occurrence of an unexpected accident resulting from sudden system operation:

  • The Nissan Pathfinder vehicle is towed.

  • The vehicle is carried on a flatbed truck.

  • The vehicle is on the chassis dynamometer.

  • The Nissan Pathfinder vehicle drives on an uneven road surface.

  • Suspension parts other than those designated as genuine parts are used. (If the Nissan Pathfinder vehicle height or the vehicle body inclination is changed, the system may not detect an obstacle correctly.)

• Excessive noise (e.g., audio system volume, an open Nissan Pathfinder vehicle window) interferes with the chime sound, and it may not be heard.

Diagnosis System (adas Control Unit 2) Nissan Pathfinder 5th Gen

CONSULT Function (ICC/ADAS 2)

Refer to CONSULT Function (ICC/ADAS 2).

Precautions ++Steering System