Nissan Sentra B18 (2020-2025) Service Manual: Component Parts

Nissan Sentra B18 (2020-2025) Service Manual / Cruise Control & Driver Assistance / Driver Assistance System :: Driver Assistance System / System Description / Component Parts

Driver Assistance System

Component Parts Location

Component Parts Location

Right rear bumper

(view with rear bumper fascia removed)

Front bumper

(view with front bumper fascia removed)

Left rear bumper

(view with rear bumper fascia removed)

Instrument panel left side

(view with instrument lower panel LH removed)

View with brake pedal assembly removed

No.	Component	Function
1.	Front camera unit	Refer to Front Camera Unit.
2.	Blind spot warning indicator RH	Refer to Blind Spot Warning Indicator LH/RH.
3.	ADAS (Advanced Driver Assistance System) control unit 2	ADAS control unit 2 calculates a target distance between Nissan Sentra vehicles and a target speed, based on signals received from each sensor and switch to transmit a brake fluid pressure control signal to ABS actuator and electric unit (control unit) via CAN communication. ADAS control unit 2 transmits engine torque command value, brake fluid pressure control signal, and buzzer output signal to each unit. Refer to Component Parts Location for detailed component location.
4.	ABS (Anti-lock Braking System) actuator and electric unit (control unit)	ABS actuator and electric unit (control unit) transmits the Nissan Sentra vehicle speed signal (wheel speed) and VDC/TCS/ABS system operation condition to ADAS control unit 2 via CAN communication. ABS actuator and electric unit (control unit) controls the brake, based on a brake fluid pressure control signal received from ADAS control unit 2 via CAN communication. Refer to Component Parts Location for detailed component location.
5.	TCM (Transmission Control Module) (with CVT)	TCM transmits the signal related to CVT control to ADAS control unit 2. Refer to Component Parts Location for detailed component location.
6.	ECM (Engine Control Module)	Transmits the accelerator pedal position signal, brake pedal position switch signal, ICC steering switch signal, etc., to ADAS control unit 2 via CAN communication. Controls the electric throttle control actuator based on the engine torque demand received from the ADAS control unit 2 via CAN communication. Refer to Component Parts Location for detailed component location.
7.	BCM (Body Control Module)	Transmits the turn indicator signal, position light request signal, stop lamp switch signal and brake pedal position switch signal to ADAS control unit 2 via CAN communication. Refer to Component Parts Location for detailed component location.
8.	Blind spot warning indicator LH	Refer to Blind Spot Warning Indicator LH/RH.
9.	Sonar control unit	Based on signals received from the rear sonar sensors, the sonar control unit sends the distance signal to the ADAS control unit 2 via CAN communication for RAB operation. Refer to Component Parts Location for detailed component location.
10.	Rear sonar sensors	When a distance from an obstacle is detected, a distance signal is transmitted to the sonar control unit. Refer to Component Parts Location for detailed component location.
11.	Combination meter	Refer to Combination Meter. Refer to Component Parts Location for detailed component location.
12.	Chassis control module (with built in steering angle sensor)	Measures the rotation amount, rotation speed, and rotation direction of steering wheel, and then transmits them to ADAS control unit 2 via CAN communication Refer to Component Parts Location for detailed component location.
13.	Steering vibration motor	Refer to Steering vibration motor.
14.	ICC (Intelligent Cruise Control) steering switch (if equipped)	Refer to ICC Steering Switch.
15.	Sonar buzzer	The sonar buzzer sounds with the signal from the sonar control unit. Refer to Component Parts Location for detailed component location.
16.	Side radar RH	Refer to Side Radar LH/RH.
17.	Distance sensor	Refer to Distance Sensor.
18.	Side radar LH	Refer to Side Radar LH/RH.
19.	Driver assistance buzzer	Refer to Driver Assistance Buzzer.
20.	Brake pedal position switch	Refer to Brake Pedal Position Switch / Stop Lamp Switch.
21.	Stop lamp switch	Refer to Brake Pedal Position Switch / Stop Lamp Switch.

Distance Sensor

Distance Sensor

Distance sensor is installed behind the front bumper and detects a vehicle ahead using millimeter waves.
Distance sensor detects radar reflected from a Nissan Sentra vehicle ahead by irradiating radar forward and calculates a distance from the vehicle ahead and relative speed, based on the detected signal.
Distance sensor transmits the presence/absence of a Nissan Sentra vehicle ahead and the distance from the vehicle to ADAS control unit 2 via ITS communication.

Icc Steering Switch

ICC Steering Switch

ICC steering switch is installed to the steering wheel and allows the driver to operate the ICC system using this switch.
ICC steering switch allows the ON/OFF of the Intelligent Cruise Control and the settings of a Nissan Sentra vehicle speed and distance between vehicles.
ICC steering switch signal is transmitted to ECM. ECM transmits the signal to the ADAS control unit 2 via CAN communication.

Brake Pedal Position Switch / Stop Lamp Switch

Brake Pedal Position Switch / Stop Lamp Switch

Stop lamp switch is installed at the upper part of the brake pedal and detects a brake operation performed by the driver.
Stop lamp switch is turned ON when depressing the brake pedal.
Stop lamp switch signal is input to BCM and ABS actuator and electric unit (control unit). Stop lamp switch signals are transmitted from BCM and ABS actuator and electric unit (control unit) to ADAS control unit 2 via CAN communication.

Combination Meter

Combination Meter

Receives meter display signal from ADAS control unit 2 via CAN communication.
Displays the system status according to a signal received from the ADAS control unit 2.

Side Radar Lh/rh

Side Radar LH/RH

Installed near the rear bumper, the side radar detects other vehicles beside own vehicle in an adjacent lane.
Connected with the ADAS control unit 2 via ITS communication, the side radar transmits a Nissan Sentra vehicle detection signal.
Receives a Blind Spot Warning indicator signal and a Blind Spot Warning indicator dimmer signal from the ADAS control unit 2 and transmits an indicator operation signal to the Blind Spot Warning indicator LH/RH.
Since side radar RH and side radar LH have the same specifications, side radar RH has the right/left switching signal circuit for identification.

Front Camera Unit

Front Camera Unit

FUNCTIONS WITHIN THE SYSTEM

Front camera unit the transmits the detected information to ADAS control unit 2 via CAN communication.

INDIVIDUAL FUNCTIONS WITHIN THE SYSTEM

The multi-sensing front camera that can avoid various risks lurking forward and sideward with one camera is adopted.
Front camera unit is installed to windshield, and detects the lane marker in travel lane and pedestrian ahead.
When there is Nissan Sentra vehicle or pedestrian, front camera unit measures the distance from them.

INDIVIDUAL OPERATION

AEB: Refer to System Description.
LDW: Refer to System Description.
TSR: Refer to System Description.

PARTS LOCATION

Refer to Component Parts Location.

Driver Assistance Buzzer

Driver Assistance Buzzer

The driver assistance buzzer is installed behind the glove box assembly.
When a driver assistance buzzer signal is received from the ADAS control unit 2, the buzzer sounds.

Steering Vibration Motor

Steering Vibration Motor

FUNCTIONS WITHIN THE SYSTEM

When approaching the lane marker of the right side or the left side, the steering vibration motor vibrates the steering wheel and alerts the driver.
The steering vibration motor alerts the driver for the following systems.
- LDW

INDIVIDUAL FUNCTIONS WITHIN THE SYSTEM

When a motor operation signal is received from the ADAS control unit 2, the steering vibration motor activates.

INDIVIDUAL OPERATION

LDW: Refer to System Description.

PARTS LOCATION

Refer to Component Parts Location.

Blind Spot Warning Indicator Lh/rh

Blind Spot Warning Indicator LH/RH

Installed on the front door corner cover, the Blind Spot Warning indicator warns the driver by lighting/blinking.
Receives a Blind Spot Warning indicator operation signal from the side radar LH/RH and blinks or turns ON/OFF the Blind Spot Warning indicator.

System

I-Fcw System Description System Description SYSTEM DIAGRAM Component Description ...

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