Driver Assistance System (Bsw & Bsi): Overview Infiniti M37 IV

Component Description

Scheme 69

BSW SYSTEM OPERATION DESCRIPTION

1. ADAS control unit enables BSW system.
2. The ADAS control unit turns on the BSW system when the warning systems switch is turned ON.
3. Side radar detects a vehicle in the adjacent lane, and transmits the vehicle detection signal to ADAS control unit via ITS communication.
4. ADAS control unit starts the control as follows, based on a vehicle detection signal, turn signal and dimmer signal transmitted from BCM via CAN communication: BSW/BSI indicator signal and BSW/BSI indicator dimmer signal transmission to side radar. Buzzer signal transmission to warning buzzer.
5. Side radar transmits an indicator operation signal to the BSW/BSI indicator according to BSW/BSI indicator signal and BSW/BSI indicator dimmer signal.

Operation Condition of BSW System

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

1. When the warning systems switch in turned ON* or BSI system turned ON.
2. When the vehicle drives at 32 km/h (20 MPH) or more to the forward direction.

Note. *: When the BSW system setting on the navigation screen is ON.

1. After the operating conditions of warning are satisfied, the warning continues until the vehicle speed reaches approximately 29 km/h (18 MPH)
2. The BSW system may not function properly, depending on the situation. Refer to " «PRECAUTIONS FOR BLIND SPOT WARNING/BLIND SPOT INTERVENTION»(ref-573638-S19637177352013082200000) ".

BSI SYSTEM OPERATION DESCRIPTION

1. ADAS control unit enables BSI system.
2. Turn ON the dynamic driver assistance switch, and BSI system setting on the navigation screen. Then BSI ON indicator comes on.
3. Combination meter turns BSI ON indicator lamp ON/OFF according to the signals from ADAS control unit via CAN communication.
4. Side radar detects a vehicle in the adjacent lane, and transmits the vehicle detection signal to ADAS control unit via ITS communication.
5. Side radar receives vehicle speed signal from ADAS control unit and changes its detecting function.
6. Lane camera unit monitors lane markers of the traveling lane and transmits the detected lane condition signal to ADAS control unit via ITS communication.
7. ADAS control unit starts the control as follows, based on a vehicle detection signal, lane condition signal, turn signal and dimmer signal transmitted from BCM via CAN communication: BSW/BSI indicator signal and BSW/BSI indicator dimmer signal transmission to side radar. Buzzer signal transmission to warning buzzer. Calculation of necessary yaw moment and transmission of the target yaw moment signal to ABS actuator and electric unit (control unit).
8. Side radar transmits an indicator operation signal to the BSW/BSI indicator according to BSW/BSI indicator operation signal and BSW/BSI indicator dimmer signal.
9. ABS actuator and electric unit (control unit) controls brake pressure of four wheels respectively according to the target yaw moment signal.

Operation Condition of BSI System

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

1. BSI ON indicator: ON
2. When the vehicle drives at 60 km/h (37 MPH) or more to the forward direction.

Note. When the BSI system setting on the navigation screen is ON. The BSI system may not function properly, depending on the situation. Refer to " PRECAUTIONS FOR BLIND SPOT WARNING/BLIND SPOT INTERVENTION ". BSI braking will not operate or will stop operating and only a warning chime will sound under the following conditions. When the brake pedal is depressed. When the accelerator pedal is depressed while brake control assist is provided. When steering quickly. When the ICC, DCA, FCW or IBA warnings sound. When the hazard warning flashers are operated. When driving on a curve at a high speed. Under the following conditions, the BSI system will be turned off automatically, a beep will sound and the BSI ON indicator will blink. The BSW system is still available, but the BSI system will not be available until the conditions no longer exist. When the VDC system (except TCS function) or ABS operates. When the VDC system is turned OFF. When the drive mode select switch is turned to the SNOW mode.

DISPLAY AND WARNING OPERATION

Vehicle condition/Driver's operation Action Warning systems ON indicator Vehicle speed (Approx.) [km/h (MPH)] Turn signal condition Status of vehicle detection within detection area Indication on the BSW/BSI indicator Buzzer OFF - - - OFF OFF ON Less than approx. 29 (18) - - OFF OFF Approx. 32 (20) or more - Vehicle is absent OFF OFF OFF Vehicle is detected ON OFF ON (Vehicle detected direction) Before turn signal operates Vehicle is detected Blink Short continuous beep Vehicle is detected after turn signal operates Blink OFF

Scheme 70

Scheme 71

Scheme 72

Note. If vehicle speed exceeds approximately 32 km/h (20MPH), BSW function operates until the vehicle speed becomes lower than approximately 29km/h (18MPH). Time shown in the figure below is approximate time. Always BSI system operates together with BSW system. Whenever BSI system is turned on by pushing the dynamic driver assistance switch, BSW system also be turned on even if the BSW system is turned off. However, at this time the warning systems ON indicator remains OFF.

Scheme 73

Scheme 74

Whenever the BSI system is turned on, the BSW system will also be on.

Vehicle condition/Driver's operation Action BSI ON indicator Vehicle speed (Approx.) [km/h (MPH)] Status of vehicle detection within detection area Status of approach to adjacent lane Indication on the BSW/BSI indicator Brake control Buzzer OFF - - - OFF OFF OFF Green Less than approx. 60 (37) - - OFF OFF OFF Approx. 60 (37) or more Vehicle is absent - OFF OFF OFF Vehicle is detected Not approaching ON OFF OFF Vehicle is detected Approaching Blink Time shown in the figure below is approximate time. ON Short continuous beeps Time shown in the figure below is approximate time

Scheme 75

Under the following conditions, the BSI system will be turned off automatically, a beep will sound and the BSI ON indicator (green) will blink. The BSW system is still available, but the BSI system will not be available until the conditions no longer exist.

1. When the VDC system (except TCS function) or ABS operates.
2. When the VDC system is turned OFF.
3. When the drive mode select switch is turned to the SNOW mode.

DESCRIPTION

The DTC is displayed on the information display by operating the ICC steering switch.

Scheme 76

CONSULT performs the following functions by communicating with the side radar LH.

CONSULT performs the following functions by communicating with the side radar RH.

Always adjust the camera aiming after removing and installing or replacing the lane camera unit.

Always perform the BSW and BSI system action test to check that the system operates normally after replacing the lane camera unit, replacing the side radar left (right), or repairing any BSI system malfunction.

Note. Perform the BSI system action test after checking that the LDP system operates normally because the BSI system shares components with the LDP system.

Note. Fully understand the following items well before the road test; Precautions: Refer to " PRECAUTION FOR BSW/BSI SYSTEM SERVICE ". System description for BSW: Refer to " BLIND SPOT WARNING (BSW) SYSTEM: SYSTEM DESCRIPTION ". System description for BSI: Refer to " BLIND SPOT INTERVENTION (BSI) SYSTEM: SYSTEM DESCRIPTION ". Normal operating condition: Refer to " DESCRIPTION ".

ADAS control unit judges the gear position based on the following signals.

1. Current gear position signal transmitted from TCM via CAN communication.
2. Value of gear ratio calculated from input speed signal transmitted from TCM via CAN communication.
3. Value of gear ratio calculated from the vehicle speed signal transmitted from ABS actuator and electric unit (control unit) via CAN communication.

SIDE RADAR LH: Description

CAN controller controls the communication of ITS communication signal and the error detection.

SIDE RADAR RH: Description

CAN controller controls the communication of ITS communication signal and the error detection.

ADAS CONTROL UNIT: Description

CAN controller controls the communication of CAN communication signal and ITS communication signal, and the error detection.

LANE CAMERA UNIT: Description

CAN controller controls the communication of ITS communication signal and the error detection.

The switch does not turn ON

1. When the BSI system setting is ON, the BSI ON indicator does not illuminate even if the dynamic driver assistance switch is depressed.

The switch does not turn OFF

1. The BSI ON indicator does not turn off even if the dynamic driver assistance switch is pressed when the BSI ON indicator illuminates.

1. BSW system setting is not selectable on the navigation screen.
2. BSI system setting is not selectable on the navigation screen. NOTE: When the ignition switch is in ACC position, BSW or BSI system settings cannot be changed. "Blind Spot Warning" or "Blind Spot Intervention" is not indicated on the navigation screen. The switching between ON and OFF cannot be performed by operating the navigation system. The item "Blind Spot Warning" or "Blind Spot Intervention" on the navigation screen is not active.
3. The BSW or BSI system setting differs from the one set at the previous driving. NOTE: Turn OFF the ignition switch and wait for 5 seconds or more.

See also:
• DTC INDEX
• DTC INDEX