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Home >> Infiniti >> 2012 >> M37x AWD V6-3.7L (VQ37VHR) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Collision Avoidance and Parking Assist Systems >> Description and Operation >> Blind Spot Intervention System >> System Description

System Description




SYSTEM

BLIND SPOT INTERVENTION (BSI) SYSTEM : System Description


SYSTEM DIAGRAM







ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item





Output Signal Item






FUNCTION DESCRIPTION

- The BSI system can help alert the driver of other vehicles in adjacent lanes when changing lanes. BSI
always operates together with BSW.
- The BSI system operates above approximately 60 km/h (37 MPH).
- The BSI system uses side radar installed near the rear bumper to detect other vehicles beside vehicle in an adjacent lane.
- The side radar can detect vehicles on either side of vehicle within the detection zone shown as illustrated.
- This detection zone starts from the outside mirror of vehicle and extends approximately 10 ft (3.0 m) behind the rear bumper, and approximately 10 ft (3.0 m) sideways.
- If the BSW/BSI indicator is illuminated while vehicle is approaching a lane marker, the BSW/BSI indicator blinks and an audible warning will sound three times. Then the system applies the brakes on one side of the vehicle for a short period of time to help return the vehicle back to the center of the lane.





- BSI operates regardless of turn signal usage.
- The brightness of BSW/BSI indicator lights is adjusted automatically depending on the brightness of the ambient light.
NOTE:
- BSI is typically activated earlier than LDP when getting closer to the lane marker.
- Warning and brake control will only be activated if the BSW/BSI indicator is already illuminated when vehicle approaches a lane marker.
- If another vehicle comes into the detection zone after vehicle has crossed a lane marker, no warning or brake control will be activated.

BSI SYSTEM OPERATION DESCRIPTION

- ADAS control unit enables BSI system.
- Turn ON the dynamic driver assistance switch, and BSI system setting on the navigation screen. Then BSI
ON indicator comes on.
- Combination meter turns BSI ON indicator lamp ON/OFF according to the signals from ADAS control unit via
CAN communication.
- Side radar detects a vehicle in the adjacent lane, and transmits the vehicle detection signal to ADAS control unit via ITS communication.
- Side radar receives vehicle speed signal from ADAS control unit and changes its detecting function.
- Lane camera unit monitors lane markers of the traveling lane and transmits the detected lane condition signal to ADAS control unit via ITS communication.
- 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).
- 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.
- 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.
- BSI ON indicator: ON
- 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. 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.

BULB CHECK ACTION AND FAIL-SAFE INDICATION.











NOTE:
Time shown in the figure is approximate time.
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