CAN COMMUNICATION SYSTEM(w/o Central Gateway ECU) FAIL-SAFE CHART


  1. FAIL-SAFE FUNCTION


    1. When communication fails in any of the CAN bus lines (communication lines), a fail-safe function(s) will operate. The fail-safe function that is specified for each system operates to prevent those systems from malfunctioning.

    2. The following table shows the effects on each system when communication is impossible. (For further details, see the pages for each system.)

      Function Control Master System Related Fail-safe Operation Driver Detectable

      DTC Detection

      (ECU that stored DTC)

      Air Conditioning Control


      • Corrects engine speed, such as for idle up.

      • Controls outlet air temperature, outlet mode change and airflow volume based on engine coolant temperature signal.

      • Corrects engine coolant temperature map and changes compressor lock judgment value.

      		 Air conditioning amplifier assembly

      • ECM

      • Power management control ECU

      		 Control is performed based on default coolant temperature of 80°C (176°F). -

      U0100

      U0293

      (Air conditioning amplifier assembly)

      Simple Load Control


      • Performs electric load control according to load control level signal.

      		 Air conditioning amplifier assembly Power steering ECU with motor assembly Load control is not performed. -

      U0131

      (Air conditioning amplifier assembly)

      Panel Control


      • Controls air conditioning system operation state display and air conditioning control panel switch indicator output based on air conditioning control panel switch operation.

      • If automatic circulation control is available, changes the air inlet mode to FRESH or RECIRCULATION mode based on information from the smog ventilation sensor.

      		 Air conditioning amplifier assembly

      • Multi-media module receiver assembly

      • Radio receiver assembly

      		 Air inlet mode does not change. -

      U0163

      (Air conditioning amplifier assembly)

      Panel Dimming Control


      • Outputs dimmer signal to LIN connected panels according to display dimmer signal.

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Dimming mode and non-dimming mode cannot be switched. -

      U0142

      (Air conditioning amplifier assembly)

      Ambient Temperature Correction Control


      • Switches air conditioning system operation condition and corrects value of displayed ambient temperature according to vehicle speed signal.

      		 Air conditioning amplifier assembly Combination meter assembly Control is performed based on default vehicle speed of 0 km/h (0 mph).

      • Correction level for displayed ambient temperature declines.

      • Correction level for outlet airflow declines.

      U0155

      (Air conditioning amplifier assembly)

      Air Conditioning Eco Mode Control


      • Limits air conditioning system control.

      		 Air conditioning amplifier assembly Power management control ECU Maintains the latest state. (Maintained in normal condition after reset.) -

      U0293

      (Air conditioning amplifier assembly)

      Power Steering Control


      • Calculates assist current according to torque sensor value and vehicle speed and drives motor.

      		 Power steering ECU with motor assembly

      • Power management control ECU

      • Brake booster with master cylinder assembly (skid control ECU)

      • Steering sensor

      • Control is performed based on default assist current for a vehicle speed of 100 km/h (62 mph).

      • Drivability degrades (compensation control using steering angle is stopped).

      		 EPS warning light illuminates.

      U0129

      U0293

      (Power steering ECU with motor assembly)

      Steering Assist Calculation


      • Changes assist force based on vehicle speed.

      		 Power steering ECU with motor assembly Brake booster with master cylinder assembly (skid control ECU)

      When communication with skid control ECU is interrupted:


      • Control continues based on a default speed of 100 km/h (62 mph) because vehicle speed is unrecognizable.

      		 EPS warning light illuminates.

      U0129

      (Power steering ECU with motor assembly)

      Assist Map Selection


      • Selects proper assist map according to destination, engine type, etc.

      		 Power steering ECU with motor assembly ECM Default map is used to assist because proper assist map cannot be selected. (Steering feel may be different.) EPS warning light illuminates.

      C1582

      (Power steering ECU with motor assembly)

      Initialization and Zero Point Learning


      • Performs steering angle sensor initialization and zero point learning.

      		 Power steering ECU with motor assembly

      • Airbag sensor assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Steering sensor

      		 Steering angle sensor initialization and zero point learning are not performed. EPS warning light illuminates.

      U0129

      (Power steering ECU with motor assembly)

      Steering Assist Compensation Control


      • Provides steering assist with compensation amount based on vehicle speed.

      		 Power steering ECU with motor assembly Brake booster with master cylinder assembly (skid control ECU) Control is performed based on a default vehicle speed of approximately 100 km/h (62 mph). EPS warning light illuminates.

      U0129

      (Power steering ECU with motor assembly)

      Lane Departure Alert System


      • Warns when vehicle is deviating from its lane.

      		 Lane departure warning camera

      • ECM

      • Power management control ECU

      • Airbag sensor assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      		 Lane recognition and buzzer warning are canceled.

      • Displays messages on the multi-information display.

      • LDA indicator light does not illuminate.

      U0101

      U0104

      U0123

      U0129

      U0142

      U0155

      (Lane departure warning camera)

      Automatic High Beam System


      • Controls high beam on/off.

      		 Lane departure warning camera

      • ECM

      • Power management control ECU

      • Airbag sensor assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      		 Maintains the same condition. Displays messages on the multi-information display.

      U0101

      U0123

      U0129

      U0142

      (Lane departure warning camera)
      Vehicle Speed Display Combination meter assembly Brake booster with master cylinder assembly (skid control ECU) Speedometer is controlled based on a default vehicle speed of 0 km/h (0 mph).

      • Needle of speedometer remains at 0 km/h (0 mph).

      • Drive monitor calculation is stopped.

      U0129

      (Combination meter assembly)
      Tachometer Display Combination meter assembly ECM Tachometer is controlled based on a default engine speed of 0 rpm.

      • Needle of tachometer remains at 0 rpm.

      • Drive monitor calculation is stopped.

      U0100

      (Combination meter assembly)
      Hybrid System Indicator Display Combination meter assembly Power management control ECU Control is performed based on signal value of 0. Needle of hybrid system indicator remains at the bottom. -

      Airbag Warning


      • Airbag warning light control

      		 Combination meter assembly Airbag sensor assembly None Airbag warning light illuminates.

      U0151

      (Combination meter assembly)

      EPS Warning


      • EPS warning light control

      		 Combination meter assembly Power steering ECU with motor assembly None EPS warning light illuminates.

      U0131

      (Combination meter assembly)

      Vehicle Customization


      • Displays vehicle customization items on the multi-information display based on the display request from the main body ECU (multiplex network body ECU).

      		 Combination meter assembly Main body ECU (multiplex network body ECU) Control is performed based on signal value of 0. Multi-information display does not display vehicle customization items.

      U0142

      (Combination meter assembly)

      SLIP Warning


      • SLIP warning light control

      		 Combination meter assembly Brake booster with master cylinder assembly (skid control ECU) None SLIP indicator illuminates. -
      Engine Coolant Temperature Receiver Gauge Control Combination meter assembly ECM Control is performed based on signal value of 0. Needle of engine coolant temperature receiver gauge is at the middle or below. -

      Tire Pressure Warning System


      • Tire pressure warning light control

      		 Combination meter assembly Main body ECU (multiplex network body ECU) None Tire pressure warning light illuminates. -

      Tire Pressure Warning System


      • Displays tire pressure on the multi-information display.

      		 Combination meter assembly Main body ECU (multiplex network body ECU) Control is performed based on signal value of 0. Tire pressure is not displayed. -
      ABS Control Brake booster with master cylinder assembly (skid control ECU) Airbag sensor assembly

      • When control is being performed: When back-up control (vehicle behavior stabilization) is complete, braking returns to normal operation and further control is prohibited.

      • When control is not being performed: Control will not be started.

      • Brake warning light (red) illuminates.

      • ABS warning light illuminates.

      • SLIP indicator illuminates.

      U0073

      U0123

      U0124

      (Brake booster with master cylinder assembly (skid control ECU))
      TRC/VSC Control Brake booster with master cylinder assembly (skid control ECU)

      • Airbag sensor assembly

      • Steering sensor

      • Power management control ECU

      • When control is being performed: When back-up control (vehicle behavior stabilization) is complete, braking returns to normal operation and further control is prohibited.

      • When control is not being performed: Control will not be started.

      • Brake warning light (red) illuminates.

      • ABS warning light illuminates.

      • SLIP indicator illuminates.

      • Brake warning light (yellow) illuminates.

      U0073

      U0123

      U0124

      U0126

      U0293

      (Brake booster with master cylinder assembly (skid control ECU))

      Hybrid Regenerative Operation


      • Regenerative cooperative control with the HV system.

      		 Brake booster with master cylinder assembly (skid control ECU) Power management control ECU

      • When control is being performed: HV cooperative control is continued based on the latest value and gradually decreased. After this, HV cooperative control is prohibited.

      • When control is not being performed: HV cooperative control does not start.

      • Brake warning light (red) illuminates.

      • ABS warning light illuminates.

      • SLIP indicator illuminates.

      • Brake warning light (yellow) illuminates.

      U0073

      U0293

      (Brake booster with master cylinder assembly (skid control ECU))

      Pre-crash Safety Brake Control


      • Applies brakes based on command from the driving support ECU assembly.

      		 Driving support ECU assembly Brake booster with master cylinder assembly (skid control ECU)

      • When control is being performed: Pre-crash safety brake control is stopped and then prohibited.

      • When control is not being performed: Pre-crash safety brake control is prohibited.

      • Brake warning light (red) illuminates.

      • ABS warning light illuminates.

      • SLIP indicator illuminates.

      • Brake warning light (yellow) illuminates.

      U0073

      U0123

      U0124

      U0126

      U0293

      (Brake booster with master cylinder assembly (skid control ECU))

      Brake Fluid Pressure Control


      • Controls brake fluid pressure based on the brake pedal position and applies brakes as required.

      		 Brake booster with master cylinder assembly (skid control ECU) Airbag sensor assembly

      • When control is being performed: Brake fluid pressure control is stopped immediately and mechanical brake operation is performed.

      • When control is not being performed: Mechanical brake operation is performed.

      • Brake warning light (red) illuminates.

      • ABS warning light illuminates.

      • SLIP indicator illuminates.

      • Brake warning light (yellow) illuminates.

      U0073

      U0123

      U0124

      (Brake booster with master cylinder assembly (skid control ECU))

      Drive Torque Control


      • Controls the engine, MG1 and MG2 based on engine information received.

      		 Power management control ECU ECM Vehicle drives using only the motor.

      • Master warning light illuminates.

      • MIL illuminates.

      U0100

      (Power management control ECU)

      Regenerative Operation


      • Provides maximum amount of regeneration based on cooperative control with the ECB system.

      		 Power management control ECU Brake booster with master cylinder assembly (skid control ECU)

      • Regeneration is prohibited.

      • TRC operation is prohibited.

      		 Master warning light illuminates.

      U0129

      (Power management control ECU)

      High voltage shut off control when the vehicle is damaged.


      • Receives the SRS collision detection signal and shuts off the system main relays.

      		 Power management control ECU Airbag sensor assembly Normal driving. Master warning light illuminates.

      U0151

      (Power management control ECU)

      Air Conditioning Control


      • Sends a signal from the air conditioning amplifier assembly to the power management control ECU and from the power management control ECU to the inverter for the air conditioning system.

      		 Air conditioning amplifier assembly Power management control ECU Normal driving. Air conditioning cooling operation is stopped.

      U0164

      (Power management control ECU)

      Cruise Control (w/o Dynamic Radar Cruise Control System)


      • Calculates demand drive force to maintain vehicle speed.

      		 Power management control ECU

      • Brake booster with master cylinder assembly (skid control ECU)

      • Combination meter assembly

      		 Cruise control is canceled.

      • Displays messages on the multi-information display.

      • Master warning light illuminates.

      U0122

      (Power management control ECU)

      Air Conditioning Control


      • Air conditioning control controls air conditioning functions such as set temperature adjustment, air outlet selection, etc. using the remote touch.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      		 Air conditioning amplifier assembly

      • When set temperature is shown on multi-display, set temperature display turns off.

      • Air conditioning function(s) are prohibited.

      		 A message indicating to check air conditioning amplifier connection appears on multi-display.

      U0073

      U0164

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      LEXUS Parking Assist-sensor System Setting/Notification


      • Controls settings for clearance sonar screen notifications which are set by operating Remote Touch, displays sonar status and plays voice warnings.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      • Power management control ECU

      • Clearance warning ECU assembly

      		 Display updating is stopped. -

      U0073

      U0100

      U1110

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      Fuel Consumption Display


      • Displays graph of fuel consumption per minute and history of total fuel consumption.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Combination meter assembly

      • ECM

      • Power management control ECU

      When communication with ECM or skid control ECU is interrupted:


      • Display is not updated.

      When communication with combination meter is interrupted:


      • Display is not updated.

      • Numeric part of driveable mileage is cleared.

      		 -

      U0100

      U0129

      U0155

      U0293

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      Destination Identification


      • Identifies destination based on destination and destination package information, and selects the time zone and language used for the display.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      		 Main body ECU (Multiplex network body ECU) Destination is identified based on information received before communication is interrupted. Time zone and language selection screen are different from actual destination.

      U0140

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      HV Energy Flow Display


      • Creates energy flow screen which indicates regeneration status and drive force transmission status.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      		 Power management control ECU If communication stops while energy flow screen is displayed, the energy flow display disappears and the latest value is maintained for the SOC level display. -

      U0100

      U0293

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      Vehicle Customization Function


      • Allows changing of operation and control conditions for vehicle functions via multi-display operation.

      • Multi-media module receiver assembly

      • Radio receiver assembly

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Air conditioning amplifier assembly

      • Front power seat switch LH

      • Multiplex tilt and telescopic ECU

      		 When an application that uses phase 4 remote communication is activated (customization/remote diagnosis), the process will be performed regardless of main body ECU (multiplex network body ECU) remote communication permit/prohibit state. Related customization items are not displayed or do not change to set values.

      U0073

      (Multi-media module receiver assembly)

      (Radio receiver assembly)

      Parking Assist Monitor


      • Displays the guide lines based on the steering sensor and vehicle speed.

      		 Multi-media module receiver assembly

      • ECM

      • Power management control ECU

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • If a communication stop occurs when the expected course lines are being displayed, the expected course lines are cleared and "Guidance unavailable" is displayed on the bottom of the screen.

      • If a communication stop occurs when the display is in parallel parking guide mode, "Guidance unavailable" is displayed on the bottom of the screen.

      		 -

      U0100

      U0126

      U0140

      (Multi-media module receiver assembly)

      Parking Assist Monitor


      • Monitors the shift position signal, steering angle signal and vehicle speed, and displays the predicted path guide lines on the screen based on the steering angle when reversing.

      		 Rear television camera assembly

      • Power management control ECU

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • Clearance warning ECU assembly

      • Radio receiver assembly

      		 Parking assist monitor function is prohibited.

      • Predicted path guide lines are not displayed.

      • All guide lines and the clearance sonar icon are not displayed.

      U0100

      U0126

      U0129

      U0140

      U0163

      U1000

      U1110

      (Rear television camera assembly)

      Entry Function


      • Entry lock/unlock, entry luggage compartment open.

      • Warning.

      • Performs entry illumination (Interior illumination etc).

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      		 Entry unlock is performed again.

      • Entry lock/unlock or entry luggage compartment open does not operate.

      • Warning functions (Key confinement, Key not in vehicle, Key reminder etc.) do not operate.

      • Key confinement prevention control does not operate.

      • Entry illumination does not operate.

      U0100

      U0155

      U0327

      (Main body ECU (multiplex network body ECU))

      U0100

      U0142

      U0155

      (Certification ECU (smart key ECU assembly))

      Wireless Function


      • Locks and unlocks doors, etc. via remote operation.

      		 Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Wireless lock, unlock and luggage compartment opener do not operate. -

      U0142

      (Certification ECU (smart key ECU assembly))

      Power Switch Backlighting Control


      • Turns on/off power switch illumination linked with interior lights etc.

      		 Certification ECU (smart key ECU assembly) Main body ECU (multiplex network body ECU) Power switch backlighting does not illuminate according to interior lights operation. -

      U0142

      (Certification ECU (smart key ECU assembly))

      Door Lock


      • Controls key linked and automatic door lock/unlock function, key confinement prevention function, etc.

      		 Main body ECU (multiplex network body ECU)

      • ECM

      • Power management control ECU

      • Airbag sensor assembly

      • Combination meter assembly

      • Speed sensitive automatic lock control does not occur.

      • Shift linked automatic lock control does not occur.

      • Shift linked automatic unlock control does not occur.

      • Automatic lock/unlock cannot be changed.

      		 -

      U0100

      U0101

      U0151

      U0155

      (Main body ECU (multiplex network body ECU))

      Display Automatic Dimming


      • Display dimming control.

      		 Main body ECU (multiplex network body ECU) Combination meter assembly Automatic dimming control for displays does not operate when taillights are turned on. -

      U0155

      (Main body ECU (multiplex network body ECU))

      Luggage Compartment Door Opener/Luggage Compartment Door Open Control


      • Accepts luggage compartment door opener request.

      		 Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • ECM

      • Power management control ECU

      		 Luggage compartment door does not open. -

      U0100

      U0101

      U0155

      (Main body ECU (multiplex network body ECU))
      Illumination Control Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Power management control ECU

      		 Interior lights turn off.

      When communication with smart key ECU is interrupted:


      • Interior lights do not turn off right after getting out of the vehicle.

      U0293

      U0327

      (Main body ECU (multiplex network body ECU))
      Seat and Mirror Control Main body ECU (multiplex network body ECU)

      • Front power seat switch LH

      • Front power seat switch RH

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      • Multiplex tilt and telescopic ECU

      • Power management control ECU

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      • Memory function does not operate.

      • Mirrors cannot be adjusted.

      		 -

      U0199

      U0200

      U0208

      U0209

      U0120

      U0155

      U0327

      U1115

      (Main body ECU (multiplex network body ECU))
      Entry Function/Wireless Control Certification ECU (smart key ECU assembly) Main body ECU (multiplex network body ECU) Entry lock/unlock control is not possible. -

      U0327

      (Main body ECU (multiplex network body ECU))
      Daytime Running Light Control Main body ECU (multiplex network body ECU)

      • ECM

      • Power management control ECU

      		 Daytime running light control is not possible. -

      U0100

      U0293

      (Main body ECU (multiplex network body ECU))
      Vehicle Customization Main body ECU (multiplex network body ECU)

      • Air conditioning amplifier assembly

      • Multi-media module receiver assembly

      • Radio receiver assembly

      • Power management control ECU

      • Clearance warning ECU assembly

      • ECM

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      • Vehicle customization functions do not operate.

      • Memory call does not operate and latest conditions cannot be memorized/recalled.

      		 -

      U0100

      U0327

      (Main body ECU (multiplex network body ECU))

      Tire Pressure Monitoring System


      • Monitors tire pressure, vehicle speed, etc., and illuminates indicator lights or displays a message on the multi-information display.

      		 Main body ECU (multiplex network body ECU) Combination meter assembly None Tire pressure warning light blinks and then illuminates.

      U0155

      (Main body ECU (multiplex network body ECU))

      Automatic High Beam System


      • Controls high beam output automatically when the lane departure warning camera detects preceding or oncoming vehicles.

      		 Main body ECU (multiplex network body ECU) Lane departure warning camera Maintains the same condition. Displays messages on the multi-information display.

      U0182

      (Main body ECU (multiplex network body ECU))

      Engine Start/Stop Switch (Power Source Mode Change)


      • Using start/stop switch signal as trigger, changes power source mode automatically and requests starter operation when conditions are met.

      		 Power management control ECU

      • ECM

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      		 None A message is displayed on the multi-information display for 15 seconds when the power switch is turned from on (IG) to off.

      U0100

      U0293

      Power management control ECU
      Power Tilt and Power Telescopic Steering Column Control Multiplex tilt and telescopic ECU

      • Front power seat switch LH

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • Driving position memory function is prohibited.

      • Auto away/return function is prohibited.

      		 -

      U0142

      U0208

      (Multiplex tilt and telescopic ECU)

      Seat Position Memory System


      • Controls the seat position based on operation conditions.

      		 Front power seat switch LH

      • Main body ECU (multiplex network body ECU)

      • ECM

      • Power management control ECU

      • Combination meter assembly

      • Multiplex tilt and telescopic ECU

      • Driving position memory function is prohibited.

      • Auto away/return function is prohibited.

      		 - -
      Outer Mirror Surface Adjustment Control

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) Manual adjustment does not operate. -

      U0142

      (Outer mirror control ECU assembly LH)

      (Outer mirror control ECU assembly RH)
      Outer Mirror Surface Heater Control

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      • Air conditioning amplifier assembly

      • Main body ECU (multiplex network body ECU)

      		 Heater does not operate. - -
      Reverse-shift Linked Door Mirror Operation

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) Reverse-shift linked door mirror function does not operate. - -
      Mirror Surface Position Memory and Recall

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) Mirror surface position cannot be memorized or recalled. - -

      Seat Memory Switch Signal Forwarding


      • Transmits memory switch signal via the CAN bus.

      		 Main body ECU (multiplex network body ECU)

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Seat position memory settings cannot be memorized or recalled. - -

      Power Trunk Lid System


      • Opens/closes luggage compartment door automatically based on main switch operation and operation conditions.

      		 Luggage closer motor assembly

      • Main body ECU (multiplex network body ECU)

      • ECM

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Automatic open function does not operate.

      • Automatic close function cannot reverse operation while operating.

      		 - -

      Luggage Compartment Door Closer System


      • Fully closes luggage compartment door automatically when it is ajar.

      		 Luggage closer motor assembly

      • Main body ECU (multiplex network body ECU)

      • ECM

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      		 Automatic close function cannot reverse operation while operating. - -

      Courtesy Switch Signal Forwarding


      • Transmits courtesy switch signals of the luggage compartment door via the CAN bus.

      		 Luggage closer motor assembly Main body ECU (multiplex network body ECU) None Door ajar warning light does not illuminate even though the luggage compartment door is open. -

      Dynamic Radar Cruise Control System


      • Accelerates or decelerates the vehicle to maintain the distance to the vehicle ahead.

      		 Driving support ECU assembly

      • ECM

      • Airbag sensor assembly

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Power management control ECU

      • Combination meter assembly

      • Main body ECU (multiplex network body ECU)

      		 Control stops.

      • Displays messages on the multi-information display.

      • Master warning light illuminates.

      U0125

      U0126

      U0129

      U0235

      U0293

      U1104

      (Driving support ECU assembly)

      Pre-crash Safety System


      • Controls the seat belts and brakes immediately before a crash.

      		 Driving support ECU assembly

      • ECM

      • Airbag sensor assembly

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Power management control ECU

      • Seat belt control ECU

      • Main body ECU (multiplex network body ECU)

      		 Control stops.

      • Displays messages on the multi-information display.

      • PCS indicator light flashes.

      U0125

      U0126

      U0129

      U0142

      U0293

      U1100

      (Driving support ECU assembly)

      Parking Assist-sensor System Control


      • Judges shift lever position.

      		 Clearance warning ECU assembly Power management control ECU Obstacle detection is stopped. -

      U0101

      (Clearance warning ECU assembly)

      Parking Assist-sensor System Control


      • Judges vehicle speed.

      		 Clearance warning ECU assembly Combination meter assembly Obstacle detection is stopped. -

      U0155

      (Clearance warning ECU assembly)

      Pre-crash Safety System (Operation Condition 1)


      • When the VSC system suddenly brakes or the vehicle is unable to be controlled while spinning or drifting, the seat belt control ECU receives buckle switch information from the airbag sensor assembly and operates the pre-crash seat belts that retracts the seat belts to enhance the effect of the pretensioner.

      		 Seat belt control ECU

      • Airbag sensor assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      		 Control stops. PCS indicator light flashes.

      U0129

      U0140

      U0151

      (Seat belt control ECU)

      Pre-crash Safety System (Operation Condition 2)


      • When the driving support ECU assembly has determined that a collision is unavoidable based on information from the millimeter wave radar sensor, the seat belt control ECU operates the pre-crash seat belts to enhance the effect of the pretensioner.

      		 Seat belt control ECU

      • Airbag sensor assembly

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • Driving support ECU assembly

      		 Control stops. PCS indicator light flashes.

      U0129

      U0140

      U0151

      U1104

      (Seat belt control ECU)

      Blind Spot Monitor System Control (Blind Spot Monitor Function)


      • Detects vehicles in blind spot of adjacent lane and informs driver.

      		 Blind spot monitor sensor LH

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • Power management control ECU

      		 Control stops. Displays messages on the multi-information display.

      U0126

      U0129

      U0142

      U0232

      U0293

      (Blind spot monitor sensor LH)

      Blind Spot Monitor System Control (Rear Cross Traffic Alert Function)


      • Alerts the driver of an approaching vehicle from behind when backing up.

      		 Blind spot monitor sensor LH

      • Steering sensor

      • Brake booster with master cylinder assembly (skid control ECU)

      • Main body ECU (multiplex network body ECU)

      • Power management control ECU

      		 Control stops. Displays messages on the multi-information display.

      U0126

      U0129

      U0142

      U0232

      U0293

      (Blind spot monitor sensor LH)

      Gateway System (Between V bus and sub bus 11)


      • Relays data between V bus and sub bus 11, and monitors ECUs connected to sub bus 11.

      		 Power management control ECU

      w/ Dynamic radar cruise control system:


      • Driving support ECU assembly

      • Blind spot monitor sensor LH

      • Seat belt control ECU

      		 - -

      U0104

      U0233

      U1002

      U1100

      (Power management control ECU)

      w/o Dynamic radar cruise control system:


      • Lane departure warning camera

      • Blind spot monitor sensor LH

      		 - -

      U0233

      U023A

      U1002

      (Power management control ECU)