Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis System (distance Sensor)

Nissan Sentra B18 (2020-2025) Service Manual / Cruise Control & Driver Assistance / Driver Assistance System :: Driver Assistance System / System Description / Diagnosis System (distance Sensor)

Consult Function (laser/radar)

CONSULT Function (LASER/RADAR)

APPLICATION ITEMS

CONSULT performs the following functions via CAN communication with ADAS control unit 2 and the communication with distance sensor.

Diagnosis mode	CGW Status			Description
Diagnosis mode	Restricted Mode	Diag Test Mode	Open Mode	Description
Self Diagnostic Result	Display	Display	Display	Displays malfunctioning system memorized in side radar
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 side radar
Active Test^*1	Non-display^*1	Display^*1	Display^*1	Enables an operational check of a load by transmitting a driving signal from the side radar to the load
ECU Identification	Display	Display	Display	Displays side radar part number
Network-DTC^*2	Display	Display	Display	Display network DTC which side radar 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.

SELF DIAGNOSTIC RESULT

Refer to DTC Index.

DATA MONITOR

Monitored item [Unit]	Description
VHCL SPEED SE [km/h] or [mph]	Nissan Sentra Vehicle speed judged from a vehicle speed signal read by the distance sensor via ITS communication is displayed [ADAS control unit 2 receives a Nissan Sentra vehicle speed signal from ABS actuator and electric unit (control unit) via CAN communication and transmits the calculated Nissan Sentra vehicle speed to distance sensor via ITS communication].
YAW RATE [deg/s]	Indicates yaw rate read from ADAS control unit 2 through ITS communication [ADAS control unit 2 receives yaw rate signal from ABS actuator and electric unit (control unit) via CAN communication and transmits yaw rate calculated by the ADAS control unit 2] Yaw rate judged from a yaw rate signal read by distance sensor via ITS communication is displayed [ADAS control unit 2 receives a yaw rate signal from ABS actuator and electric unit (control unit) via CAN communication and transmits the calculated yaw rate to distance sensor via ITS communication].
PWR SUP MONI [V]	Indicates IGN voltage input by distance sensor
DISTANCE [m]	Indicates the distance from the Nissan Sentra vehicle ahead
RELATIVE SPD [m/s]	Indicates the relative speed of the Nissan Sentra vehicle ahead
LASER OFFSET [m]	Note: The item is indicated but not used.
LASER HEIGHT [m]	Note: The item is indicated but not used.
STEERING ANGLE [deg]	The steering angle is displayed.
STRG ANGLE SPEED [deg/s]	The steering angle speed is displayed.
L/R ADJUST [deg]	Indicates a horizontal correction value of the radar
U/D ADJUST [deg]	Indicates a vertical correction value of the radar
FCW SYSTEM ON	NOTE: The item is indicated, but not used.
FCW SELECT	NOTE: The item is indicated, but not used.
FEB SW	Indicates [On/Off] status of AEB system.
FEB SELECT	Indicates [ON/OFF] state of the AEB system.
MAIN SW	Indicates [ON/OFF] status as judged from ICC steering switch.
ICC/ASCD MODE	NOTE: The item is indicated, but not used.
SET/COAST SW	Indicates [ON/OFF] status as judged from ICC steering switch.
CANCEL SW	Indicates [ON/OFF] status as judged from ICC steering switch.
RESUME/ACC SW	Indicates [ON/OFF] status as judged from ICC steering switch.
DISTANCE SW	Indicates [ON/OFF] status as judged from ICC steering switch.
BRAKE SW	Indicates [ON/OFF] status as judged from brake pedal position switch signal [ECM transmits brake pedal position switch signal through CAN communication].
STOP LAMP SW	Indicates [ON/OFF] status as judged from stop lamp switch signal [ABS actuator and electric unit (control unit) transmits stop lamp switch signal through CAN communication].
IDLE SW	Indicates [ON/OFF] status of idle switch read from distance sensor through CAN communication (ECM transmits ON/OFF status through CAN communication).
CRUISE LAMP	Indicates [ON/OFF] status of MAIN switch indicator output.
OWN VHCL	Indicates [On/Off] status of own Nissan Sentra vehicle indicator output.
VHCL AHEAD	Indicates [ON/OFF] status of Nissan Sentra vehicle ahead detection indicator output.
SET DISTANCE	Indicates set distance memorized in ADAS control unit 2.
SET VHCL SPD [km/h] or [mph]	Indicates set Nissan Sentra vehicle speed memorized in distance sensor integrated unit.
THRTL SENSOR [%]	Indicates throttle position read from ISS sensor through CAN communication (ECM transmits accelerator pedal position signal through CAN communication).
Nissan Sentra Vehicle AHEAD DETECT	Indicates [ON/OFF] status of Nissan Sentra vehicle ahead detection indicator output.
STATIC OBSTACLE DETECT	Indicates [ON/OFF] status of static obstacle detection.
BUZZER O/P	[ON/OFF] Indicates [On/Off] status of warning chime output.
FUNC ITEM (FCW)	NOTE: The item is indicated, but not used.
FUNC ITEM (FEB)	Indicates systems status
FUNC ITEM (ICC)	Indicates systems status
PRESS ORDER [bar]	Indicates status as judged from brake fluid pressure signal [ABS actuator and electric unit (control unit) transmits brake fluid pressure signal through CAN communication].
D RANGE SW	Indicates [ON/OFF] status as judged from D position switch signal (TCM transmits shift position signal through CAN communication).
NP RANGE SW	Indicates [ON/OFF] status as judged from N/P position switch signal (TCM transmits shift position signal through CAN communication).
PKB SW	Parking brake switch status [ON/OFF] judges from the parking brake switch signal that ADAS control unit 2 readout via CAN communication is displayed (combination meter transmits the parking brake switch signal via CAN communication)
VHCL SPD AT	Indicates Nissan Sentra vehicle speed calculated from CVT vehicle speed sensor read from distance sensor integrated unit through CAN communication (TCM transmits CVT Nissan Sentra vehicle speed sensor signal through CAN communication).
Shift position	Indicates shift position read from ADAS control unit 2 though CAN communication (TCM transmits shift position signal through CAN communication).
Turn signal	NOTE: The item is indicated, but not used.
SYSTEM CANCEL MESSAGE	Indicates [ON/OFF] status of system cancel display output.
DISP VHCL SPD [km/h] or [mph]	NOTE: The item is indicated, but not used.
VHCL SPD UNIT	Indicates Nissan Sentra vehicle speed unit read from distance sensor through CAN communication (combination meter transmits vehicle speed unit through CAN communications).
ADAS AVAILABLE COND	NOTE: The item is indicated, but not used.
ICC SET STATUS	NOTE: The item is indicated, but not used.
ICC MALF	NOTE: The item is indicated, but not used.
ADAS MALF	Indicates [ON/OFF] status of ADAS malfunction.
ICC CANCEL	NOTE: The item is indicated, but not used.
ACCEL COM VALUE 1 [m/s2]	Indicates accel command calculated from set speed and information of ahead Nissan Sentra vehicle.
ICC STATUS	Indicates ICC status.
ACCEL COM VALUE 2	NOTE: The item is indicated, but not used.
MILEAGE	NOTE: The item is indicated, but not used.

WORK SUPPORT

Work support items	Description
MILLIWAVE RADAR ADJUST	Outputs millimeter waves, calculates the displacement in radar direction, and indicates an adjustment direction

Distance sensor Adjust

Refer to Work Procedure.

ECU IDENTIFICATION

Distance sensor part number is displayed.

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