BSW SYSTEM OPERATION DESCRIPTION
- Camera control unit enables BSW system.
- The camera control unit turns on the BSW system when the warning systems switch is turned ON.
- Rear view camera transmits the camera image signal to camera control unit via communication line.
- Camera control unit starts the control as follows, based on a camera image signal, turn signal and dimmer signal transmitted from BCM via CAN communication: Buzzer output signal transmission to combination meter via CAN communication.
- Camera control unit transmits an indicator operation signal to the BSW indicator according to BSW indicator signal and BSW dimmer signal.
Operation Condition of BSW System
Camera control unit performs the control when the following conditions are satisfied.
- When the warning systems switch in turned ON*.
- 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.
- After the operating conditions of warning are satisfied, the warning continues until the vehicle speed reaches approximately 29 km/h (18 MPH)
- The BSW system may not function properly, depending on the situation. Refer to " «PRECAUTIONS FOR BLIND SPOT WARNING»(ref-594010-S09889674122014012200000) ".
REAR VIEW CAMERA WASHER OPERATION
- When judging that the rear view camera has water droplets, the camera control unit transmits a rear view camera washer activation signal or rear view camera air blow signal to the pump control unit via serial communication.
- When receiving a rear view camera washer activation signal, the pump control unit simultaneously activates the washer pump to clean the rear view camera by spraying washer fluid from the nozzle installed to the rear view camera bracket.
- The washer switching solenoid valve switches the washer path from rear window to rear view camera.
- When receiving a rear view camera air blow signal, the pump control unit activates the air pump to clean the rear view camera by blowing air from the nozzle installed to the rear view camera bracket.
OPERATION CONDITION
- Approximately 30 km/h (20 MPH) or more
- When the camera control unit judges that the rear view camera has water droplets.
- When the front washer and the rear washer are not activated.
- When the low washer fluid warning is OFF.
Note. The camera is cleaned intermittently by spraying washer fluid and blowing air. When the camera control unit judges that dirt on the camera cannot be removed even after approximately 5 minutes from the first detection of dirt, the activation of BSW is canceled.
Fail-Safe
| DTC Display contents of CONSULT | Malfunction detection condition | Fail-safe condition |
|---|---|---|
| C1A03 VHCL SPEED SE CIRC | If the vehicle speed signal (wheel speed) from ABS actuator and electric unit (control unit) received by the camera control unit via CAN communication, are inconsistent | LDW system is cancel BSW system is cancel |
| C1A04 ABS/TCS/VDC CIRC | If a malfunction occurs in the VDC/TCS/ABS system | LDW system is cancel BSW system is cancel |
| CAI SCRAG SEN CIR | If the steering angle sensor is malfunction | LDW system is cancel BSW system is cancel |
| U0122 VDC P-RUN DIAGNOSIS | If camera control unit detects an error signal that is received from ABS actuator and electric unit (control unit) via CAN communication | LDW system is cancel BSW system is cancel |
| U0416 VDC CHECKSUM DIAGNOSIS | If camera control unit detects an error signal that is received from ABS actuator and electric unit (control unit) via CAN communication | LDW system is cancel BSW system is cancel |
| U0428 ST ANGLE SENSOR CALIBRATION | Neutral position adjustment of steering angle sensor is not complete. | Predicted course line is not displayed. MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. |
| U1000 CAN COMM CIRCUIT | When camera control unit cannot transmit/receive CAN communication signal continuously for 2 seconds or more. | The following functions are stopped When communication of steering angle sensor signal is not normal Predicted course line is not displayed. MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. Front tire angle display is stopped. Using "SETTING" menu display, switch each indicator of predicted course line display and MOD switch to "OFF" (turn OFF) so that switch operation cannot be performed. When communication of vehicle signal, wheel speed sensor signal, and shift signal is not normal Predicted course line is not displayed. MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. Using "SETTING" menu display, switch each indicator of predicted course line display and MOD switch to "OFF" (turn OFF) so that switch operation cannot be performed When communication of sonar signal is not normal Predicted course line is not displayed. |
| U1010 CONTROL UNIT (CAN) | CAN initial diagnosis malfunction is detected. | MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. |
| U111A REAR CAMERA IMAGE SIGNAL | No-signal status of rear camera image signal is continued for 500 ms or more while ignition switch is ON. NOTE: Current malfunction is displayed only and is not saved. | Camera image is not displayed (Gray screen display). LDW system is stopped. BSW system is stopped. |
| U1232 ST ANGLE SEN CALIB | Neutral position adjustment of steering angle sensor is performed. NG signal from steering angle sensor is received. | Predicted course line is not displayed. MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. Tire icon is stopped. Using "SETTING" menu display, switch each indicator of predicted course line display and MOD switch to "OFF" (turn OFF) so that switch operation cannot be performed. |
| U1305 CONFIG UNFINISH | The vehicle setting of camera control unit is incomplete. NOTE: Current malfunction is displayed only and is not saved. | Operation is according to the vehicle setting value as default value. |
| U1308 R-CAMERA (R&L) CALIB JDGMNT | Camera image calibration is incomplete | MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. |
| U1309 PUMP INPUT CURRENT JUDGE | Camera control unit detects the value of current from pump control unit is incorrect | MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. |
| U130B RR CAMERA COMM ERROR | Camera control unit receives the incorrect communication signal from rear view camera | MOD (Moving Object Detection) function is stopped. LDW system is stopped. BSW system is stopped. |
| U1310 PUMP ECU JUDGE | If the pump control unit is malfunction | LDW system is stopped. BSW system is stopped. |
| Other | When camera control unit is not normal. | Switch to camera screen is not allowed. |
| When communication between camera control unit and each camera is not normal. | On applicable camera screen marking (Red) is displayed. | |
| When communication line between camera control unit and each camera image line are affected by electromagnetic noises. | On applicable camera image screen, display (Blue) is displayed. |
| NOTE |
|---|
| Current malfunction is displayed only and is not saved. |
| NOTE |
|---|
| Current malfunction is displayed only and is not saved. |
Scheme 43
| No. | Name | Function |
|---|---|---|
| (1) | Warning systems switch | Turns BSW system ON/OFF (When the setting of BSW system on the navigation system setting screen is ON) |
| (2) | BSW setting screen (Navigation setting screen) | Turns setting of BSW system can be switched between ON and OFF |
Scheme 44
| No. | Name | Description |
|---|---|---|
| (1) | Warning systems ON indicator | Indicates that the LDW system and/or BSW system is ON |
| (2) | BSW warning lamp (yellow) | Turns ON when BSW system has a malfunction |
| BSW ON indicator lamp (Green) | Turns ON when BSW system is activated Blinks when the back door is open Blinks when the washer fluid level is low | |
| (3) | BSW indicator | Blinks when BSW system is warning to driver |
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 indicator Buzzer OFF - - - OFF OFF ON Less than approx. 29 (18) - - ON OFF Approx. 32 (20) or more - Vehicle is absent ON OFF OFF Vehicle is detected ON OFF ON (vehicle detected direction) Before turn signal operates Vehicle is detected Vehicle is detected after turn signal operates OFF
Scheme 45
Scheme 46
Note. If vehicle speed exceeds approximately 32 km/h (20 MPH), BSW function operates until the vehicle speed becomes lower than approximately 29 km/h (18 MPH). Time shown in the figure is approximate time.
ECU IDENTIFICATION
Camera control unit part number can be identified.
Description
- Always perform the camera control unit configuration after replacing the camera control unit.
- Always perform the rear view camera calibration after removing and installing or replacing the rear view camera.
- Always perform the rear view camera calibration after replacing the camera control unit.
| CAUTION | The system does not operate normally unless the rear view camera calibration is performed. Always perform it. |
- Perform action test to verify the customer's concern.
- Perform action test and check the system operation after system diagnosis.
| WARNING | Be careful of traffic conditions and safety around the vehicle when performing road test. |
| CAUTION | Fully understand the following items well before the road test; Precautions: Refer to " FOR USA AND CANADA: PRECAUTION FOR BSW SYSTEM SERVICE ". System description for Blind Spot Warning: Refer to " SYSTEM DESCRIPTION ". Normal operating condition: Refer to " DESCRIPTION ". |
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independently). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to " CAN COMMUNICATION SIGNAL CHART ".
CAN controller controls the communication of CAN communication signal and the error detection.
The BSW warning lamp in the combination meter does not turn ON when turning on the ignition switch
The BSW ON indicator lamp in the combination meter does not turn ON when turning on the ignition switch
- BSW system setting is not selectable on the navigation screen. NOTE: When the ignition switch is in ACC position, Blind Spot Warning system settings cannot be changed. "Blind Spot Warning" 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" on the navigation screen is not active.
- The Blind Spot Warning or system setting differs from the one set at the previous driving. NOTE: Turn OFF the ignition switch and wait for 5 seconds or more.