CAN COMMUNICATION SYSTEM 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 Hybrid vehicle control ECU assembly Control is performed based on default coolant temperature of 80°C (176°F). -

      U0293

      (Air conditioning amplifier assembly)

      Compressor Control


      • Judges compressor lock according to engine speed.

      		 Air conditioning amplifier assembly ECM Control is performed based on default engine speed of 0 rpm. - -

      Simple Load Control


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

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

      U0131

      (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)

      Destination Identification Control


      • Changes air conditioning control pattern according to destination.

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Maintains the latest state. -

      U0142

      (Air conditioning amplifier assembly)

      Insolation Correction Control


      • Corrects air conditioning system control operation according to value of solar sensor.

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Control is performed based on an insolation value of 0 after communication stop is confirmed. -

      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 Hybrid vehicle control ECU assembly Maintains the latest state (Maintained in normal condition after reset). - -

      Door Lock


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

      		 Main body ECU (multiplex network body ECU)

      • ECM

      • Hybrid vehicle control ECU assembly

      • Combination meter assembly

      • Airbag ECU assembly

      • Speed sensitive automatic lock control does not occur.

      • Shift linked automatic lock control does not occur.

      • Automatic lock/ unlock cannot be changed.

      		 -

      U0100

      U0101

      U0151

      U0155

      (Main body ECU (multiplex network body ECU))

      Display Automatic Dimming


      • Displays 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)

      • ECM

      • Hybrid vehicle control ECU assembly

      • Combination meter assembly

      		 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)

      • Hybrid vehicle control ECU assembly

      • Certification ECU (smart key ECU assembly)

      • Interior lights turn off.

      • Mirror foot illumination is turned off.

      • Footwell illumination is turned off.

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

      		 -

      U0101

      U0327

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

      • Position control ECU and switch assembly RH

      • Position control ECU and switch assembly LH

      • Outer mirror control ECU assembly (for driver side)

      • Outer mirror control ECU assembly (for front passenger side)

      • Multiplex tilt and telescopic ECU

      • Combination meter assembly

      • Memory function does not operate.

      • Mirrors cannot be adjusted.

      		 -

      U0120

      U0155

      U0199

      U0200

      U0208

      U0209

      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))

      Engine System Indicator Display


      • Estimates whether injectors are clogged and requests that a message be displayed informing user that injectors need maintenance.

      • Estimates whether oil has deteriorated and requests that a message be displayed informing user that oil needs to be replaced.

      		 ECM Combination meter assembly

      • System is unable to inform user that oil needs to be replaced or injectors need maintenance.

      • Combination meter display cannot be cleared.

      • System is unable to inform user of brake override system control status.

      		 - -

      Electric Fan


      • Controls electric fan in accordance with air conditioning system request.

      		 ECM Air conditioning amplifier assembly Electric fan operates fail-safe function. - -

      Cooperative Control


      • Cooperative control between hybrid vehicle control ECU assembly and ECM.

      		 ECM Hybrid vehicle control ECU assembly Engine is stopped. Displays messages on the multi-information display.

      U0293

      (ECM)

      Power Steering Control


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

      		 Power steering ECU assembly

      • Hybrid vehicle control ECU assembly

      • Skid control ECU assembly

      		 Assist force restricted. EPS warning light illuminates.

      U0129

      U0293

      (Power steering ECU 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)

      • ECM

      • Main body ECU (multiplex network body ECU)

      • 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, and key confinement prevention control does not operate.

      • Entry illumination does not operate.

      U0100

      U0142

      U0155

      (Certification ECU (smart key ECU assembly))

      Memory Function


      • Moves the seat and steering wheel to the recorded positions when smart entry unlock or wireless unlock operation is performed.

      		 Main body ECU (multiplex network body ECU)

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Memory system does not operate.

      • Key registration does 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))

      Security Indicator Display Function


      • Displays immobiliser and security status.

      		 Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Hybrid vehicle control ECU assembly

      		 Security indicator cannot display security status correctly (security indicator blinks or illuminates when in armed state or alarm sounding state). -

      U0142

      U0293

      (Certification ECU (smart key ECU assembly))

      Power Switch (Power Source Control)


      • Changes the power source mode using the power switch signal as a trigger and requests the HV system to start when conditions are met.

      		 Certification ECU (smart key ECU assembly)

      • Hybrid vehicle control ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      		 - -

      U0140

      U0155

      U0293

      (Certification ECU (smart key ECU assembly))
      Vehicle Speed Display Combination meter assembly Skid control ECU assembly

      • 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

      • Needle of tachometer remains at 0 rpm.

      • Drive monitor calculation is stopped.

      		 -

      U0100

      (Combination meter assembly)

      Meter Display


      • Displays vehicle condition and controls indicator lights.

      		 Combination meter assembly

      • ECM

      • Skid control ECU assembly

      • Power steering ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Airbag ECU assembly

      • Headlight leveling ECU assembly

      • Headlight ECU sub-assembly

      • Forward recognition camera

      • Driving support ECU assembly

      		 Lights do not illuminate or remain illuminated. Abnormal light operation.

      U0100

      U0129

      U0131

      U0142

      U0151

      U0182

      U023A

      U1104

      (Combination meter assembly)

      Buzzer


      • Controls sounding of buzzer for various functions.

      		 Combination meter assembly

      • ECM

      • Skid control ECU assembly

      • Power steering ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Airbag ECU assembly

      		 Buzzer stops sounding or does not sound. -

      U0100

      U0129

      U0131

      U0151

      (Combination meter assembly)

      Destination Identification


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

      		 Combination meter assembly Main body ECU (multiplex network body ECU) None -

      U0142

      (Combination meter assembly)

      Linking-up with Multi-information Display


      • Displays navigation, audio, telephone, etc.

      		 Combination meter assembly Radio receiver assembly None -

      U0163

      (Combination meter assembly)

      Pedestrian Protection Function (Pop-up Hood)


      • Raises the engine hood in the event of frontal collision to protect pedestrian.

      		 Airbag ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Skid control ECU assembly

      		 Airbag ECU assembly prohibits pedestrian protection function and performs calculations accordingly. -

      U0125

      U0126

      U0129

      (Airbag ECU assembly)
      Anti-lock Brake System Control Skid control ECU assembly Yaw rate sensor

      • During control:

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


      • Not during control:

        Control will not be started.

      • Brake warning light / red (malfunction) illuminates.

      • ABS warning light illuminates.

      • Slip indicator illuminates.

      • Brake warning light / yellow (minor malfunction) illuminates.

      U0073

      U0123

      U0124

      (Skid control ECU assembly)
      Vehicle Stability Control / Traction Control Skid control ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Hybrid vehicle control ECU assembly

      • During control:

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


      • Not during control:

        Control will not be started.

      • Brake warning light / red (malfunction) illuminates.

      • ABS warning light illuminates.

      • Slip indicator illuminates.

      • Brake warning light / yellow (minor malfunction) illuminates.

      U0073

      U0123

      U0124

      U0126

      U0293

      (Skid control ECU assembly)

      Hill-start Assist Control


      • Maintains the brake hydraulic pressure to the 4 wheels for 2 seconds with the brake pedal released when starting off on an uphill.

      		 Skid control ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Hybrid vehicle control ECU assembly

      • During control:

        When backup control (depressurization control) is complete, further control cannot be performed.


      • Not during control:

        Control will not be started.

      • Brake warning light / red (malfunction) illuminates.

      • ABS warning light illuminates.

      • Slip indicator illuminates.

      • Brake warning light / yellow (minor malfunction) illuminates.

      U0073

      U0123

      U0124

      U0126

      U0293

      (Skid control ECU assembly)

      Hybrid Regenerative Operation


      • Regenerative cooperative control with the HV system.

      		 Skid control ECU assembly

      • Yaw rate sensor

      • Hybrid vehicle control ECU assembly

      • During control:

        Control is continued based on the latest value and gradually decreased. Following this, further control is prohibited.


      • Not during control:

        Control will not be started.

      • Brake warning light / red (malfunction) illuminates.

      • ABS warning light illuminates.

      • Slip indicator illuminates.

      • Brake warning light / yellow (minor malfunction) illuminates.

      U0073

      U0123

      U0124

      U0293

      (Skid control ECU assembly)

      Headlight Leveling Control (Headlight Control)


      • Adjusts headlights vertical aiming according to wheel speed and vehicle pitch angle determined using vehicle height sensor.

      • Headlight leveling ECU assembly (for Single Beam Headlight)

      • Headlight ECU sub-assembly (for Triple Beam Headlight)

      • Skid control ECU assembly

      • Main body ECU (multiplex network body ECU)

      		 Headlight Leveling Control is stopped. -

      U0129

      U0142

      (Headlight leveling ECU assembly (for Single Beam Headlight))

      (Headlight ECU sub-assembly (for Triple Beam Headlight))

      AVS Control


      • Controls the variable damping force according to road and driving conditions.

      		 Absorber control ECU

      • Skid control ECU assembly

      • Steering sensor

      • Yaw rate sensor

      • Hybrid vehicle control ECU assembly

      • Continues to control the damping force.

      • Interrupts damping force control after moving front absorber control actuators and rear absorber control actuators to the 9th step.

      • Controls continue except roll control.

      		 -

      U0101

      U0122

      U0124

      U0126

      U0293

      (Absorber control ECU)

      Air Conditioning Control


      • Controls air conditioning functions such as set temperature adjustment, air outlet selection, etc. by operating LEXUS display audio controller or Remote Touch.

      		 Radio receiver assembly Air conditioning amplifier assembly

      • Air conditioning system indicators turn off.

      • If set temperature is shown on multi-information display or multi-display, set temperature display turns off.

      		 Displays messages on the multi-information display.

      U0073

      U0164

      (Radio receiver assembly)

      LEXUS Parking Assist System Setting/Notification


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

      		 Radio receiver assembly

      • Hybrid vehicle control ECU assembly

      • Clearance warning ECU assembly

      		 Display updating is stopped. -

      U0073

      U1110

      (Radio receiver assembly)

      Fuel Consumption Display


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

      		 Radio receiver assembly

      • ECM

      • Skid control ECU assembly

      • Combination meter assembly

      • Hybrid vehicle control ECU assembly

      • Fuel consumption calculation is not possible. The calculated data is discarded, and per-minute fuel consumption calculation resumes when correct data is received.

      • If the fuel consumption display scale signal (FC_SCL) or drive monitor unit signal (UNIT_6) cannot be received from the combination meter assembly, the display shows the last known value.

      • If the following data cannot be received from the combination meter assembly, nothing is displayed on the fuel consumption display. If there is a communication error, nothing is displayed on the fuel consumption display until communication returns to normal.


        • Current fuel consumption/Average speed (after start)/Elapsed time (after start)/Drivable distance

      • If the following data cannot be received from the combination meter assembly, the previous data is displayed. If there is no previous data, nothing is displayed on the fuel consumption display. If there is a communication error, the last known data is displayed on the fuel consumption display until communication returns to normal.


        • Section average fuel consumption (latest graph)

      		 -

      U0073

      U0100

      U0129

      U0293

      (Radio receiver assembly)

      HV Energy Flow Display


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

      		 Radio receiver assembly Hybrid vehicle control ECU assembly If communication stops while the energy flow screen is displayed, the energy flow display disappears and the latest value is maintained for the SOC (state of charge) level display. -

      U0073

      U0293

      (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.

      		 Radio receiver assembly Main body ECU (multiplex network body ECU) Time zone and language selection screen are different from actual destination. -

      U0073

      U0140

      (Radio receiver assembly)

      Parking Assist Monitor Control


      • Displays the image from the rear view camera with the predicted path guide lines, vehicle width extension guide lines and distance guide lines overlaid when reversing.

      		 Radio receiver assembly

      • Hybrid vehicle control ECU assembly

      • Rear television camera assembly

      		 Screen does not change to the camera screen. -

      U0073

      U0265

      (Radio receiver assembly)

      Warning Sound Volume Adjustment Function


      • Mutes the multi-information display sound when a warning sound issue flag is received from any of the driving support system ECUs.

      		 Radio receiver assembly Driving support ECU assembly Mute is canceled. -

      U0073

      (Radio receiver assembly)

      Power Tilt and Power Telescopic Steering Column Control


      • Starts steering wheel auto return or auto away based on a power switch on/off signal or equivalent.

      • Memorizes and recalls selected driving position according to memory switch operation.

      • Moves steering wheel to selected position according to manual switch operation on steering column cover.

      		 Multiplex tilt and telescopic ECU

      • Main body ECU (multiplex network body ECU)

      • Position control ECU and switch assembly LH (for LHD)

      • Position control ECU and switch assembly RH (for RHD)

      • 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.

      • Position control ECU and switch assembly LH (for LHD)

      • Position control ECU and switch assembly RH (for RHD)

      • Main body ECU (multiplex network body ECU)

      • ECM

      • Combination meter assembly

      • Multiplex tilt and telescopic ECU

      		 Controls the seat position based on operation conditions. - -

      Illumination Control


      • Controls illumination of lights based on courtesy switch information and interior light information.

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

      		 Main body ECU (multiplex network body ECU) Mirror foot illumination is turned off. -

      U0142

      (Outer mirror control ECU assembly)
      Mirror Surface Adjustment

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

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

      U0142

      (Outer mirror control ECU assembly)
      Mirror Heaters

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

      • Main body ECU (multiplex network body ECU)

      • Air conditioning amplifier assembly

      		 Mirror heaters do not operate. -

      U0142

      (Outer mirror control ECU assembly)

      Mirror Retract/Return Operation


      • Controls retract/return operation of the outer mirrors based on signals such as mirror switch signal from main body ECU.

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

      		 Main body ECU (multiplex network body ECU) Mirrors cannot be retracted or returned. - -
      Reverse-shift Linked Door Mirror Operation

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

      		 Main body ECU (multiplex network body ECU) Reverse-shift linked door mirror operation. -

      U0142

      (Outer mirror control ECU assembly)
      Mirror Surface Position Memory and Recall

      • Outer mirror control ECU assembly (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

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

      U0142

      (Outer mirror control ECU assembly)

      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 (for Driver side)

      • Outer mirror control ECU assembly (for Front passenger side)

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

      Dynamic Radar Cruise Control System


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

      		 Driving support ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Skid control ECU assembly

      • Hybrid vehicle control ECU assembly

      • Millimeter wave radar sensor assembly

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

      U0125

      U0126

      U0129

      U0235

      U0293

      U1104

      (Driving support ECU assembly)

      Pre-collision System


      • Performs pre-collision alarm control, pre-collision brake assist control and pre-collision brake control when an obstruction is detected.

      		 Driving support ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Skid control ECU assembly

      • Millimeter wave radar sensor assembly

      • Forward recognition camera

      • Hybrid vehicle control ECU assembly

      • Driving support ECU assembly

      		 Control stops.

      • Displays messages on the multi-information display.

      • PCS warning light illuminates.

      U0125

      U0126

      U0129

      U0235

      U023A

      U0293

      U1102

      U1104

      (Driving support ECU assembly)

      Shift Position Judgment


      • Receives a shift position signal and uses it as a clearance sonar detection operation condition.

      		 Clearance warning ECU assembly Hybrid vehicle control ECU assembly Operation continues at the default shift position of P. -

      U0101

      (Clearance warning ECU assembly)

      LEXUS Parking Assist-Sensor


      • Judges vehicle speed.

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

      U0155

      (Clearance warning ECU assembly)

      Voice Warning Availability Confirmation


      • Uses destination code and steering wheel information for determining availability of voice warning for clearance sonar.

      		 Clearance warning ECU assembly Main body ECU (multiplex network body ECU) Assumes that there is no voice warning. - -

      LKA/LDA/SWS System

      (Recognizes the lane markers of the lane the vehicle is in using the forward recognition camera and performs the following operations based on the vehicle condition and information captured by the forward recognition camera.)


      • If the system judges that the vehicle may deviate from the lane it is in, the system performs steering assist to help the driver correct the path of the vehicle.

      • If the system judges that the vehicle deviated from the lane it is in, the system sounds a buzzer to inform the driver of lane departure.

      • If the system judges unsteady driving, the system informs the driver to stop and take a rest.

      		 Forward recognition camera

      • Hybrid vehicle control ECU assembly

      • Yaw rate sensor

      • Steering sensor

      • Skid control ECU assembly

      • Power steering ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • Millimeter wave radar sensor assembly

      • Driving support ECU assembly

      		 Lane departure alert system control stops.

      • Lane departure alert indicator light (yellow) illuminates.

      • Displays messages on the multi-information display.

      U0101

      U0123

      U0126

      U0129

      U0131

      U0142

      U0155

      U0235

      U0293

      U023A

      U1104

      (Forward recognition camera)

      Automatic High Beam System


      • Controls the high beam automatically when the forward recognition camera detects a preceding vehicle or an oncoming vehicle.

      		 Forward recognition camera

      • Hybrid vehicle control ECU assembly

      • Yaw rate sensor

      • Skid control ECU assembly

      • Millimeter wave radar sensor assembly

      • Main body ECU (multiplex network body ECU)

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

      U0101

      U0123

      U0129

      U0142

      U0235

      U0293

      (Forward recognition camera)

      Pre-collision System


      • Detects pedestrian and other vehicles and applies the brakes automatically if necessary.

      		 Forward recognition camera

      • Yaw rate sensor

      • Skid control ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Millimeter wave radar sensor assembly

      • Hybrid vehicle control ECU assembly

      • Driving support ECU assembly

      		 Detection processing is reset and signals indicating that the forward recognition camera is not detecting objects are sent to the driving support ECU assembly.

      • PCS warning light illuminates.

      • Displays messages on the multi-information display.

      U0123

      U0129

      U0142

      U0235

      U0293

      U1104

      (Forward recognition camera)

      Road Sign Assist Function


      • Identifies road signs while driving and displays them on the multi-information display.

      		 Forward recognition camera

      • Hybrid vehicle control ECU assembly

      • Yaw rate sensor

      • Skid control ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      		 Road sign assist function is canceled.

      • Master warning light illuminates.

      • Displays messages on the multi-information display.

      U0101

      U0123

      U0129

      U0142

      U0155

      U0293

      (Forward recognition camera)

      Blind Spot Monitor Control


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

      		 Blind spot monitor sensor LH

      • Skid control ECU assembly

      • Steering sensor

      • Main body ECU (multiplex network body ECU)

      • Hybrid vehicle control ECU assembly

      		 None Displays messages on the multi-information display.

      U0125

      U0126

      U0129

      U0142

      U0293

      (Blind spot monitor sensor LH)

      ASC System


      • Outputs simulated engine sounds in accordance with vehicle driving condition.

      		 Stereo component equalizer assembly

      • Main body ECU (multiplex network body ECU)

      • Skid control ECU assembly

      • Hybrid vehicle control ECU assembly

      		 Simulated engine sound output is stopped. -

      U0129

      U0142

      U0293

      (Stereo component equalizer assembly)

      Drive Torque Control


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

      		 Hybrid vehicle control ECU assembly ECM Vehicle drives using only the motor.

      • Master warning light illuminates.

      • MIL illuminates.

      U0100

      (Hybrid vehicle control ECU assembly)

      Regenerative Operation


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

      		 Hybrid vehicle control ECU assembly Skid control ECU assembly Regeneration is prohibited. Master warning light illuminates.

      U0129

      (Hybrid vehicle control ECU assembly)

      High voltage shut off control when the vehicle is damaged.


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

      		 Hybrid vehicle control ECU assembly Airbag ECU assembly Normal driving. Master warning light illuminates.

      U0151

      (Hybrid vehicle control ECU assembly)

      Air Conditioning Control


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

      		 Hybrid vehicle control ECU assembly Air conditioning amplifier assembly Air conditioning cooling operation is stopped. -

      U0164

      (Hybrid vehicle control ECU assembly)

      Parking Assist Monitor Control


      • 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

      • Hybrid vehicle control ECU assembly

      • Steering sensor

      • Main body ECU (multiplex network body ECU)

      • Radio receiver assembly

      • Blind spot monitor sensor LH

      • Clearance warning ECU assembly

      • Predicted path guide lines are not displayed.

      • All guide lines, the clearance sonar icon and rear cross traffic alert icon are not displayed.

      • Switches on the screen are grayed out.

      		 "!" is displayed on the camera screen.

      U0100

      U0126

      U0140

      U0163

      U0233

      U1110

      (Rear television camera assembly)