Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis System (adas Control Unit 2)

Diagnosis Description

Diagnosis Description

APPLICATION ITEMS

CONSULT performs the following functions via CAN communication using ADAS control unit 2.

Diagnosis mode

CGW Status

Description

Restricted Mode

Diag Test Mode

Open Mode

Self Diagnostic Result

Display

Display

Display

Displays malfunctioning system memorized in ADAS control unit 2

CGW Information*1

Display*1

Display*1

Display*1

  • Display the current CGW mode*1

  • Enables CGW to switch mode*1

Data Monitor

Display

Display

Display

Displays real-time input/output data of ADAS control unit 2

Active Test*1

Non-display*1

Display*1

Display*1

Enables an operational check of a load by transmitting a driving signal from the ADAS control unit 2 to the load

Work Support*1

Non-display*1

Non-display*1

Display*1

It can monitor the adjustment direction indication in order to perform the radar alignment operation smoothly

ECU Identification

Display

Display

Display

Displays ADAS control unit 2 part number

Configuration*2

Display

Display

Display

  • The Nissan Sentra vehicle specification that is written in ADAS control unit 2 can be displayed or stored

  • The Nissan Sentra vehicle specification can be written when ADAS control unit 2 is replaced

Network-DTC*2

Display

Display

Display

Display network DTC which ADAS control unit 2 memorizes when performing "Diagnosis (All System)".

CAN Diag Support Monitor*2

Display

Display

Display

The results of transmit/receive diagnosis of CAN communication can be read

*1: In some Nissan Sentra vehicles, it is not malfunctioning in case of no display of "CGW Information". In this case, it is not necessary to switch the CGW status. In Nissan Sentra vehicles where "CGW information" is not displayed, "Work Support" and "Active Test" are always displayed.

*2: Displays when performing "Diagnosis (All System)".

CGW Information

Display the diagnosis mode which a user can perform in Diag Test mode/Open Mode by switching the CGW status from Restricted mode to Diag Test Mode/Open Mode.

For the method of switching CAN Gateway status, Refer to CONSULT Function.

Note:

In some Nissan Sentra vehicles, it is not malfunctioning in case of no display of "CGW Information". In this case, it is not necessary to switch the CGW status.

CONFIGURATION

Configuration includes functions as follows.

Note:

Models with AEB system only.

Function

Description

Read/Write Configuration

Before Replace ECU

Allows the reading of Nissan Sentra vehicle specification written in ADAS control unit 2 to store the specification in CONSULT.

After Replace ECU

Allows the writing of the Nissan Sentra vehicle information stored in CONSULT into the ADAS control unit 2.

Manual Configuration

Allows the writing of the Nissan Sentra vehicle specification into the ADAS control unit 2 by hand.

WORK SUPPORT

Work support items

Description

CAUSE OF AUTO-CANCEL 4

Displays causes of automatic system cancellation occurred during control of the following systems

  • AEB

  • ICC

CAUSE OF AUTO-CANCEL 6

Displays causes of automatic system cancellation occurred during control of the RAB

FEB OPERATION MILEAGE

Displays mileage at AEB system operation

Note:

Display Items for The Cause of Automatic Cancellation 4

Cause of cancellation

Description

OPERATING WIPER

Wiper function was operated

OPERATING ABS

ABS function was operated

OPERATING TCS

TCS function was operated

OPERATING VDC

VDC function was operated

ECM CIRCUIT

ECM did not permit the Intelligent Emergency Brake system to operate

CVT CIRCUIT

TCM did not permit the Intelligent Emergency Brake system to operate

VDC/TCS OFF SW

VDC OFF in the information display was selected

OP SW DOUBLE TOUCH

Steering switches were pressed at the same time

VHCL SPD DOWN

Nissan Sentra Vehicle speed is lower than 30 km/h (20 MPH)

WHL SPD ELEC NOISE

Electromagnetic noise interfered with Wheel speed sensor signal

VHCL SPD UNMATCH

Wheel speed and AT Nissan Sentra vehicle speed became inconsistent

INCHING LOST

A Nissan Sentra vehicle ahead is not detected during the following driving when the vehicle speed is approximately 30 km/h (20 MPH) or less

TIRE SLIP

Because the tire slipped

IGN LOW VOLT

Decrease in ADAS control unit 2 IGN voltage

PARKING BRAKE ON

The Nissan Sentra vehicle was driven with parking brake ON

CAN COMM ERROR

ADAS control unit 2 received an abnormal signal with CAN communication

ABS/TCS/VDC CIRC

An abnormal condition occurs in ABS/TCS/VDC system

ECD CIRCUIT

An abnormal condition occurs in ECD system

ABS WARNING LAMP

Because the ABS warning light turned on

FEB) CURVATURE

Road curve was more than the specified value

FEB) YAW RATE

Detected yawing speed was more than the specified value

FEB) LTRL ACCELERATION

Detected lateral speed is the specified value or more

FEB COUNT LIMIT

Because the AEB has been activated 3 times

LANE CAMERA BLOCKED

Inclusion of dirt or stain on front camera field of view (example) window with fogging, window with dirt, strong light from front etc...)

ICC SENSOR CAN COMM ERR

Distance sensor received an abnormal signal with CAN communication

FR RADAR BLOCKED

Inclusion of dirt or stains on the distance sensor area of the front bumper

RADAR INTERFERENCE

Distance sensor receives electromagnetic interference

TOWING

When being towed

CCM CIRCUIT

When CCM becomes abnormal

Lane camera offset center

Significant change in Nissan Sentra vehicle attitude or improper installation position of front camera

Note:

If “Lane camera offset center” is frequently detected, check Nissan Sentra vehicle attitude (e.g. tire pressure) and installation condition of front camera. After this inspection, perform front camera aiming again.

Front camera blocked

Inclusion of dirt or stain on front camera unit field of view (example) window with fogging, window with dirt, strong light from front etc...)

Step brake/accel at once

The brake and accelerator pedals are depressed simultaneously.

Piloted drive conti operate time

3 minutes are passed after the Nissan Sentra vehicle is stopped by ICC and the electric parking brake is engaged.

Get-out judgment

The system determines that the driver exits the Nissan Sentra vehicle.

EPS circuit

The EPS control system refuses to permit activation of the ICC system.

ePKB circuit

The electric parking brake system refuses to permit activation of the ICC system.

CCM circuit

Chassis control module refuses to permit activation of the ICC system.

FEB/EAPM actuation

AEB function was operated.

Sloping road judgment

The system determines that the road is a hill with a gradient too steep for control.

Release hand judgment

The system determines that the driver is not holding the steering during driving.

Turn signal operation judgment

Turn signal operation function was operated.

Lane marker lost

The system no longer detects the lane markers.

Leading Nissan Sentra vehicle lost (side)

The Nissan Sentra vehicle ahead changes lanes and is no longer in front of this vehicle.

Steering override

Steering value is invalid

LDP/BSI actuation

Note:

The item is displayed, but it is not used

Lane camera offset center

Significant change in Nissan Sentra vehicle attitude or improper installation position of front camera

Note:

If “Lane camera offset center” is frequently detected, check Nissan Sentra vehicle attitude (e.g. tire pressure) and installation condition of front camera. After this inspection, perform front camera aiming again.

NO RECORD

Display Items for The Cause of Automatic Cancellation 6

Cause of cancellation

Description

CAN COMM ERROR

ADAS control unit 2 received an abnormal signal with CAN communication

VDC OFF SW

VDC OFF in the information display was selected

ACCEL IS OPERATED 1

Accelerator pedal was depressed

ACCEL IS OPERATED 2

Accelerator pedal was depressed

ECD CIRCUIT

An abnormal condition occurs in ECD system

GRADIENT LARGE

Slope, such as uphill, inclination was too steep

IGN LOW VOLT

Decrease in ADAS control unit 2 ignition voltage

BRAKE IS OPERATED

Brake pedal was operated

STEERING ANGLE LARGE

Steering angle was more than the specified value

SONAR CIRCUIT

Malfunction of sonar control unit

NO RECORD

SELF DIAGNOSTIC RESULT

Refer to DTC Index.

Note:

DATA MONITOR

Note:

The following table includes information (items) inapplicable to this Nissan Sentra vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitored item

[Unit]

EAP (MAIN)

ICC/FEB/FCW/PFCW

LDW/LDP

BSW/BSI

INPUT/OUTPUT (H/W&CAN) SIGNAL

Description

MAIN SW

[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch

SET/COAST SW

[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch

CANCEL SW

[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch

RESUME/ACC SW

[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch

CRUISE OPE

[On/Off]

×

Indicates whether controlling or not (ON means “controlling”)

CRUISE LAMP

[On/Off]

×

Indicates [On/Off] status of MAIN switch indicator output

BRAKE SW

[On/Off]

×

×

×

Indicates [On/Off] status as judged from brake switch signal (BCM transmits brake switch signal through CAN communication)

STOP LAMP SW

[On/Off]

×

×

×

Indicates [On/Off] status as judged from stop lamp switch signal (BCM transmits stop lamp switch signal through CAN communication)

SET DISTANCE

[Short/Mid/Long]

×

Indicates set distance memorized in ADAS control unit 2

VHCL SPEED SE

[km/h] or [mph]

×

×

×

Indicates Nissan Sentra vehicle speed calculated from ADAS control unit 2 through CAN communication [ABS actuator and electric unit (control unit) transmits Nissan Sentra vehicle speed signal (wheel speed) through CAN communication]

SET VHCL SPD

[km/h] or [mph]

×

Indicates set Nissan Sentra vehicle speed memorized in ADAS control unit 2

PWR SUP MONI

[V]

×

Indicates IGN voltage input by ADAS control unit 2

THRTL OPENING

[%]

×

Indicates throttle position read from ADAS control unit 2 through CAN communication (ECM transmits accelerator pedal position signal through CAN communication).

STP LMP DRIVE

[On/Off]

×

Indicates [On/Off] status of brake hold relay drive output

CLUTCH SW SIG

[On/Off]

×

Indicates [On/Off] status as judged from clutch switch signal (ECM transmits clutch switch signal through CAN communication)

NP SW SIG

[On/Off]

×

Indicates [On/Off] status as judged from park/neutral position switch signal (ECM transmits park/neutral position switch signal through CAN communication).

Main SW 1

[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch

FCW SYSTEM ON

[On/Off]

×

Indicates [On/Off] status of I-FCW system

ITS setting item(FCW)

[On/Off]

×

Note:

The item is displayed, but it is not used

DCA SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

FCW SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

DRIVE MODE STATS

[AUTO/SPORT/ECO/SNOW/Mid/Indefinite]

×

×

×

Note:

The item is displayed, but it is not used

RELEASE SW NO

[On/Off]

×

×

×

Indicates [On/Off] status as judged from stop lamp switch signal (BCM transmits stop lamp switch signal through CAN communication)

RELEASE SW NC

[On/Off]

×

×

×

Indicates [On/Off] status as judged from brake switch signal (BCM transmits brake switch signal through CAN communication)

SL MAIN SW

[On/Off]

×

Note:

The item is displayed, but it is not used

OFF-ROAD SW

[On/Off]

×

×

×

Note:

The item is displayed, but it is not used

Shift position

[Off, P, R, N, D, S, L, B]

×

×

×

Indicates shift position read from ADAS control unit 2 through CAN communication (TCM transmits shift position signal through CAN communication)

4WD SWITCH

[AUTO/4H/2WD/4L]

×

×

×

Note:

The item is displayed, but it is not used

LDW SYSTEM ON

[On/Off]

×

Indicates [On/Off] status of LDW system

LDP ON IND

[On/Off]

×

Note:

The item is displayed, but it is not used

LANE DPRT W/L

[On/Off]

×

Indicates [On/Off] status of LDW warning display output

LDP SYSTEM ON

[On/Off]

×

Note:

The item is displayed, but it is not used

Camera lost

[Detect/Deviate/Both]

×

×

Note:

The item is displayed, but it is not used

Turn signal

[OFF/LH/RH/LH&RH]

×

×

Indicates turn signal operation status read from ADAS control unit 2 through CAN communication (BCM transmits turn indicator signal through CAN communication)

SIDE G

[G]

×

×

Indicates lateral G acting on the Nissan Sentra vehicle. This lateral G is judged from a side G sensor signal read by ADAS control unit 2 via CAN communication

(The ABS actuator and electric unit (control unit) transmits a side G sensor signal via CAN communication)

ITS setting item(LDW)

[On/Off]

×

Note:

The item is displayed, but it is not used

LDP SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

LDW SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

ITS SETTING ITEM(LDP)

[On/Off]

×

Note:

The item is displayed, but it is not used

ITS setting item(BSW)

[On/Off]

×

Note:

The item is displayed, but it is not used

BSI SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

BSW SELECT

[On/Off]

×

Note:

The item is displayed, but it is not used

BSW/BSI WARN LMP

[On/Off]

×

Indicates [On/Off] status of Blind Spot warning malfunction

BSI ON IND

[On/Off]

×

Note:

The item is displayed, but it is not used

BSW SYSTEM ON

[On/Off]

×

Indicates [On/Off] status of BSW system

BSI SYSTEM ON

[On/Off]

×

Note:

The item is displayed, but it is not used

ENGINE RPM

[rpm]

×

Indicates engine speed read from ADAS control unit 2 through CAN communication (ECM transmits engine speed signal through CAN communication)

FEB/EAP SW

[On/Off]

×

Note:

The item is displayed, but it is not used

LDP/LDW SW

[On/Off]

×

Indicates [On/Off] status of LDW system

IGN power supply voltage

[On/Off]

×

Indicates IGN voltage input by ADAS control unit 2

LDP/LDW SW indicator

[On/Off]

×

Note:

The item is displayed, but it is not used

BSI/BSW SW indicator

[On/Off]

×

Note:

The item is displayed, but it is not used

Motor

[On/Off]

×

Indicates [On/Off] status of steering vibration motor

Chassis dynamometer mode

[On/Off]

×

Indicates [On/Off] status of chassis dynamo mode

Active test status

[On/Off]

×

Indicates [On/Off] status of active test

Nissan Sentra Vehicle speed

[km/h] or [mph]

×

Indicates [On/Off] status of idle switch read from ADAS control unit 2 through CAN communication (ECM transmits On/Off status through CAN communication)

Torque sensor value

[Nm]

×

Note:

The item is displayed, but it is not used

Steering torque (factory)

[Nm]

×

Note:

The item is displayed, but it is not used

Steering torque (dealer)

[Nm]

×

Note:

The item is displayed, but it is not used

Steering torque (currently)

[Nm]

×

Note:

The item is displayed, but it is not used

Steering torque (measured)

[Nm]

×

Note:

The item is displayed, but it is not used

Steering torque rgstrtn stats

[OK/NG]

×

Note:

The item is displayed, but it is not used

Steering torque error cause

×

Note:

The item is displayed, but it is not used

Steering torque calib judgment

[OK/NG]

×

Note:

The item is displayed, but it is not used

ACTIVE TEST

Test item

Description

METER LAMP

The AEB warning lamp can be illuminated by ON/OFF operations as necessary

Switch lamp 2

Note:

The item is displayed, but it is not used

Switch lamp 3

Note:

The item is displayed, but it is not used

ADAS buzzer 2

Sounds a buzzer by arbitrarily operating ON/OFF

Vibration motor

Operate a steering vibration motor used for LDW system by arbitrarily operating ON/OFF

Electric parking brake activation

Note:

The item is displayed, but it is not used

Steering reaction force activation

Note:

The item is displayed, but it is not used

Release hand warning

Note:

The item is displayed, but it is not used

METER LAMP

Note:

The test can be performed only when the engine is running.

Test item

Operation

Description

AEB warning lamp

METER LAMP

Off

Stops sending the AEB warning lamp signal to exit from the test

On

Transmits the AEB warning lamp signal to the combination meter via CAN communication

ON

ADAS buzzer 2

Test item

Operation

Description

Driver assistance buzzer

ADAS buzzer 2

On

Stops transmitting the buzzer output signal below to end the test

ON

Off

Transmits the driver assistance buzzer signal to the driver assistance buzzer

End

Returns to the “SELECT TEST ITEM” screen

Vibration motor

Test item

Operation

Description

Steering vibration motor

Vibration motor

On

Stops transmitting the motor operation signal below to end the test

ON

Off

Transmits the motor operation signal to the steering vibration motor

End

Returns to the “SELECT TEST ITEM” screen

ECU IDENTIFICATION

Displays ADAS control unit 2 parts number.

System
System Description System Description DESCRIPTION ADAS* control unit 2 controls the following systems, based on CAN communication signal from each control unit. Note: ...

Ecu Diagnosis Information
...

Other materials:

Precaution for Work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...

Power Supply and Ground Circuit
A/c Amp. Diagnosis Procedure Diagnosis Procedure CHECK A/C AMP. GROUND CIRCUIT FOR OPEN Ignition switch OFF. Disconnect A/C amp. connector. ...

Common Item
Consult Function (bcm - Common Item) CONSULT Function (BCM - COMMON ITEM) BCM Refer to CONSULT Function (BCM - COMMON ITEM). ...

© 2014-2026 Copyright www.nisentra.com