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


      • Coolant temperature correction control

      • Engine operation control

      • Electric water pump control

      • PTC control

      		 Air conditioning amplifier assembly ECM

      • Coolant temperature information: Control is performed based on the value detected before the malfunction or based on a default coolant temperature of 80°C (176°F).

      • PTC control: PTC mode is turned off due to a sensor malfunction.

      		 - -

      Air conditioning control


      • Inverter control

      • Electric water pump control

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

      [Air conditioning amplifier assembly]

      U0100

      Air conditioning control


      • Electric load control state is controlled based on load control level signal

      		 Air conditioning amplifier assembly Power steering ECU assembly No load control (regular control) -

      [Air conditioning amplifier assembly]

      U0131

      Air conditioning control


      • ECO mode judgment control

      		 Air conditioning amplifier assembly Power management control ECU Maintains same condition (Controls using default value (ECO display off) when not determined). - -

      Air conditioning control


      • A/C control mode switching

      • HVAC control switching

      • Indicator dimming control

      		 Air conditioning amplifier assembly Main body ECU (Multiplex network body ECU) Maintains same condition (Controls using default value when not determined) -

      [Air conditioning amplifier assembly]

      U0142

      Air conditioning control


      • Vehicle speed correction control

      		 Air conditioning amplifier assembly Meter circuit plate

      • Control is performed based on default vehicle speed of 0 km/h.

      • Correction level for displayed ambient temperature declines.

      • Correction level for outlet airflow declines.

      		 -

      [Air conditioning amplifier assembly]

      U0155

      Air conditioning control


      • READY signal control

      		 Air conditioning amplifier assembly Power management control ECU Maintains the same state. (When not determined, control is performed based on a default setting of off.) -

      [Air conditioning amplifier assembly]

      U0293

      Air conditioning control


      • Sends a signal from the air conditioning amplifier assembly to the power management control ECU (HV CPU) and from the power management control ECU (HV CPU) to the inverter for the air conditioning system

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

      [Power management control ECU (HV CPU)]

      U0164

      ECO navigation display


      • Displays fuel consumption per minute and regeneration amount in chart and displays history of average fuel economy

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

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

      • Meter circuit plate

      • Power management control ECU

      • ECM

      • Update of the per-minute fuel consumption display (per minute fuel consumption calculation) on the navigation Eco screen (per-minute fuel consumption screen) is stopped.

      • Update of the current average fuel economy display on the navigation Eco screen (block fuel consumption screen) is stopped.

      • If drivable mileage is displayed on the navigation Eco screen (block fuel consumption screen), the numeric part of the drivable mileage disappears because drivable mileage data cannot be received.

      		 -

      [Navigation ECU sub-assembly]

      U0100

      U0129

      U0155

      U0293

      [Radio and display receiver assembly]

      U0100

      U0129

      U0155

      U0293

      Energy monitor display


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

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

      		 Power management control ECU 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. -

      [Navigation ECU sub-assembly]

      U0100

      U0293

      [Radio and display receiver assembly]

      U0100

      U0293

      Rear view monitor control


      • Displays rear view monitor (without guide lines)

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

      • Main body ECU (Multiplex network body ECU)

      • Power management control ECU

      • Screen does not change to image from camera when reverse (R) has been selected.

      • Caution messages are shown superimposed on the image from the camera.

      		 Screen does not change to image from camera when reverse (R) has been selected.

      [Navigation ECU sub-assembly]

      U0100

      [Radio and display receiver assembly]

      U0100

      Destination identification


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

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

      		 Main body ECU (Multiplex network body ECU) Destination is identified based on the latest value (based on the default value if data has never been received) and operation continues. Time zone and language selection screen are different from actual destination.

      [Navigation ECU sub-assembly]

      U0073

      U0140

      [Radio and display receiver assembly]

      U0073

      U0140

      Vehicle customization function


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

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

      • Main body ECU (Multiplex network body ECU)

      • Certification ECU (Smart key ECU assembly)

      • Air conditioning amplifier assembly

      		 - - -

      Time stamp function


      • Diagnostic function that links relative time information from the main body ECU (multiplex network body ECU) and absolute time (actual time) obtained from GPS

      		 Navigation ECU sub-assembly Main body ECU (Multiplex network body ECU) - -

      [Navigation ECU sub-assembly]

      U0073

      U0140

      Daytime running light control


      • Judges that the vehicle is being driven and turns on/off the daytime running lights

      		 Main body ECU (Multiplex network body ECU)

      • ECM

      • Power management control ECU

      		 Daytime running light control does not operate. -

      [Main body ECU (Multiplex network body ECU)]

      U0100

      U0293

      Display automatic dimming control


      • Judges bright areas and dark areas using the light sensor signal and dims displays/indicators only in dark areas

      		 Main body ECU (Multiplex network body ECU) Meter circuit plate Automatic dimming control for displays is performed when taillights are turned on. -

      [Main body ECU (Multiplex network body ECU)]

      U0155

      Key linked door lock/unlock control


      • Locks/unlocks all doors due to operation of key linked switches

      		 Main body ECU (Multiplex network body ECU) Airbag ECU assembly Key linked operation is permitted. -

      [Main body ECU (Multiplex network body ECU)]

      U0151

      Key confinement prevention control


      • Unlocks the doors when the doors are locked with the key forgotten inside the cabin

      		 Main body ECU (Multiplex network body ECU) Meter circuit plate Key confinement prevention unlock operation is permitted. -

      [Main body ECU (Multiplex network body ECU)]

      U0155

      Back door opener


      • Releases the door latch (turns the opener motor on) when the built-in switch of the luggage compartment door opener outer switch turns on (is operated)

      		 Main body ECU (Multiplex network body ECU) Meter circuit plate Back door open control is prohibited. -

      [Main body ECU (Multiplex network body ECU)]

      U0155

      Illumination control


      • Turns on the interior lights when the smart key is brought near the vehicle

      		 Main body ECU (Multiplex network body ECU) Certification ECU (Smart key ECU assembly) Interior light illumination control does not operate when the smart key is brought near the vehicle. -

      [Main body ECU (Multiplex network body ECU)]

      U0327

      Footwell illumination


      • Turns on the footwell illumination

      		 Main body ECU (Multiplex network body ECU)

      • Meter circuit plate

      • Power management control ECU

      • Footwell illumination is turned on.

      • Footwell illumination does not turn off.

      		 -

      [Main body ECU (Multiplex network body ECU)]

      U0101

      U0155

      Alarm


      • Judges a theft attempt based on changes in door courtesy switch status and requests operation of the warning function

      		 Main body ECU (Multiplex network body ECU)

      • ECM

      • Power management control ECU

      • A false alarm sounds when the power switch is turned on (IG) while in arming mode.

      • Engine speed is detected and alarm is not canceled by turning the power switch on (READY).

      		 -

      [Main body ECU (Multiplex network body ECU)]

      U0100

      U0293

      U1133

      LED headlight warning control


      • Detects a malfunction in the LED headlights and informs the user of it

      		 Main body ECU (Multiplex network body ECU) Power management control ECU LED headlight malfunctions cannot be detected. -

      [Main body ECU (Multiplex network body ECU)]

      U0293

      Entry function


      • Smart lock/unlock / smart back door open / smart back door unlatch

      • Warning

      • Performs entry illumination (interior illumination etc)

      • Smart unlock mode switching answerback

      • Main body ECU (Multiplex network body ECU)

      • Certification ECU (Smart key ECU assembly)

      		 Meter circuit plate

      • Smart lock/unlock and smart back door unlatch do not operate.

      • Smart alarm does not operate.

      • Entry illumination does not operate.

      • Smart unlock is retried.

      • Smart unlock mode switch answerback does not operate.

      		 -

      [Certification ECU (Smart key ECU assembly)]

      U0142

      U0155

      [Main body ECU (Multiplex network body ECU)]

      U0327

      Wireless function


      • Performs operation of wireless lock/unlock or panic functions

      		 Main body ECU (Multiplex network body ECU) Certification ECU (Smart key ECU assembly) Wireless lock/unlock and panic functions do not operate. -

      [Certification ECU (Smart key ECU assembly)]

      U0142

      ABS control


      • Helps prevent wheel lockup during sudden stops

      		 Brake booster with master cylinder assembly (Skid control ECU) Yaw rate sensor

      • When control is being performed: Once control (vehicle behavior stabilization) has completed, further ABS control is prohibited.

      • When control is not being performed: ABS control does not start.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0123

      U0124

      VSC/TRC control


      • Suppresses vehicle instability such as skidding while turning or wheel slip when starting off

      		 Brake booster with master cylinder assembly (Skid control ECU)

      • Power management control ECU

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Yaw rate sensor

      • When control is being performed: Once control (vehicle behavior stabilization) has completed, further VSC/TRC control is prohibited.

      • When control is not being performed: VSC/TRC control does not start.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0123

      U0124

      U0126

      U0293

      Hill-start assist control


      • Maintains brake pressure for 2 seconds when the brake pedal has been depressed further after stopping the vehicle

      		 Brake booster with master cylinder assembly (Skid control ECU)

      • Power management control ECU

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Yaw rate sensor

      • When control is being performed: Once control (depressurization control) has completed, further hill-start assist control is prohibited.

      • When control is not being performed: Hill-start assist control does not start.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0123

      U0124

      U0126

      U0293

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

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

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0293

      Brake offset learning


      • Learns destination etc. when installed at the factory or dealer

      		 Brake booster with master cylinder assembly (Skid control ECU)

      • Main body ECU (Multiplex network body ECU)

      • Power management control ECU

      • While learning: Offset learning is cancelled.

      • When learning has not been performed: Offset learning is not performed.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0293

      Proportioning control constant


      • Proportioning control constant for each vehicle

      		 Brake booster with master cylinder assembly (Skid control ECU)

      • Main body ECU (Multiplex network body ECU)

      • Power management control ECU

      • While learning: Proportioning control constant cannot be determined. Default value is set.

      • When learning has not been performed: Proportioning control constant is based on stored value.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0293

      Light illumination


      • Requests light illumination when a malfunction occurs and displays DTCs when checking for DTCs

      		 Brake booster with master cylinder assembly (Skid control ECU) Meter circuit plate

      • When light illumination is requested: Light illumination changes from requested illumination (on or off) to active illumination (default illumination of warning light that is performed by combination meter when there is a communication malfunction).

      • When light illumination is not requested: Requests to illuminate lights cannot be performed. The meter performs active illumination.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      Hydraulic brake control


      • Controls pressure based on depression amount of the brake pedal and applies brakes according to driver intention

      		 Brake booster with master cylinder assembly (Skid control ECU) Yaw rate sensor

      • When control is being performed: Pressure control is stopped immediately and system changes to mechanical type braking using hydraulic booster.

      • When control is not being performed: Pressure control does not occur and mechanical type braking occurs using hydraulic booster.

      • Brake warning light (red) turns on.

      • ABS warning light turns on.

      • Slip indicator light turns on.

      • Brake warning light (yellow) turns on.

      [Brake booster with master cylinder assembly (Skid control ECU)]

      U0073

      U0123

      U0124

      Steering assist calculation


      • Changes assist force based on vehicle speed

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

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

      • Steering wheel feels heavy when the vehicle speed is below 100 km/h and feels light at speeds above 100 km/h (62 mph).

      		 EPS warning light illuminates.

      [Power steering ECU assembly]

      U0129:ECB

      Steering assist start judgment


      • Permits assist after judging that the power source mode is on (READY)

      		 Power steering ECU assembly Power management control ECU Steering assist start is not judged while cranking but is judged when the engine starts idling. EPS warning light illuminates.

      [Power steering ECU assembly]

      U0129

      Steering assist map selection


      • Selects proper assist map according to destination, drive system (2WD, 4WD), engine type, etc.

      		 Power steering ECU assembly Power management control ECU Default assist map is used because proper assist map cannot be selected. - -

      Steering/steering angle sensor initialization and zero point learning


      • Performs steering/steering angle sensor initialization and zero point learning

      		 Power steering ECU assembly

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

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Yaw rate sensor

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

      [Power steering ECU assembly]

      U0129

      Steering assist compensation control


      • Provides steering assist with compensation amount based on vehicle speed

      		 Power steering ECU 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.

      [Power steering ECU assembly]

      U0129

      Power switch backlighting control


      • Turns on/off the power switch illumination

      		 Certification ECU (Smart key ECU assembly)

      • Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

      • Power switch illumination does not turn on.

      • Combination meter linked light control does not operate.

      		 -

      [Certification ECU (Smart key ECU assembly)]

      U0142

      U0155

      Light control characteristics


      • Monitors the ADIM signal and dims/does not dim the meter illumination

      • Outputs a taillight off signal based on the taillight off switch signal input (dimmer rheostat)

      		 Meter circuit plate Main body ECU (Multiplex network body ECU)

      • Meter illumination is controlled according to non-dimming mode.

      • Maintains the latest state.

      		 - -

      Speedometer


      • Receives the vehicle speed signal and displays the vehicle speed

      		 Meter circuit plate Brake booster with master cylinder assembly (Skid control ECU) Speedometer is controlled based on a default vehicle speed of 0 km/h (0 mph). - -

      Odometer/Trip meter


      • Receives the vehicle speed signal and displays the odometer/trip meter

      		 Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

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

      • Calculation is stopped until the power switch is turned off.

      • Displays the latest value.

      		 - -

      Fuel gauge


      • Displays fuel level that is measured using the fuel sender

      		 Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

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

      • Power management control ECU

      		 Control is performed based on the default value for the relevant item for which data cannot be received. Default values: vehicle speed of 0 km/h (0 mph), park (P) off, neutral (N) off, and parking brake not applied. - -

      Shift position display


      • Receives a shift state signal via CAN communication and displays the selected shift state

      		 Meter circuit plate

      • Transmission control ECU assembly

      • Power management control ECU

      		 Only the letters (P, R, N, D and B) and arrows are displayed. - -

      HV drive guide


      • Receives information about driving in HV mode and displays it

      		 Meter circuit plate

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

      • Power management control ECU

      		 Control is performed based on a default vehicle speed of 0 km/h (0 mph) with HV Eco zone not displayed, only the frame displayed for battery display and engine running. The letter corresponding to the shift state is displayed when the power switch is on (IG). -

      Headup display

      (air conditioning display, vehicle speed display, dynamic radar cruise control system display, pre-crash safety system display, etc.)

      		 Meter circuit plate

      • Air conditioning amplifier assembly

      • Navigation ECU sub-assembly

      • Radio and display receiver assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Driving support ECU assembly

      • Seat belt control ECU

      • Air conditioning temperature display: Set temperature is not displayed.

      • Vehicle speed display: 0 km/h (0 mph) is displayed.

      • Navigation display: Does not display.

      • Headup display brightness control: Set at the lowest brightness.

      • Dynamic radar cruise control system display: Does not display.

      • Pre-crash safety system display: Does not display.

      		 - -

      Buzzer


      • Monitors buzzer sounding requests from ECUs and sounds the buzzer in order of priority

      		 Meter circuit plate

      • Airbag ECU assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Power steering ECU assembly

      • Certification ECU (Smart key ECU assembly)

      • Power management control ECU

      • Driving support ECU assembly

      		 *1 - -

      Warning light


      • Monitors warning light illumination request signals and turns on/off or blinks warning lights

      		 Meter circuit plate

      • Airbag ECU assembly

      • Air conditioning amplifier assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Power steering ECU assembly

      • ECM

      • Certification ECU (Smart key ECU assembly)

      • Transmission control ECU assembly

      • Power management control ECU

      • Driving support ECU assembly

      • Seat belt control ECU

      		 *2

      • Airbag warning light illuminates.

      • ABS warning light turns on.

      • EPS warning light illuminates.

      • Brake warning light (red) turns on.

      		 -

      Diagnostic system


      • Receives DTCs from ECUs via CAN communication and blinks the warning lights to indicate the DTCs using the meter (or combination meter display)

      		 Meter circuit plate

      • Airbag ECU assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Power steering ECU assembly

      • Power management control ECU

      • Driving support ECU assembly

      • Seat belt control ECU

      • Corresponding indicator does not turn on.

      • Mode changes from diagnostic mode to normal mode.

      • Airbag warning light turns on.

      • Brake warning light (yellow) maintains the latest signal state until the power switch is turned off.

      • Slip indicator light maintains the latest signal state until the power switch is turned off.

      • ABS warning light turns on.

      		 -

      [Meter circuit plate]

      U0100

      U0129

      U0131

      U0151

      Combination meter display


      • Displays the drive monitor, vehicle-to-vehicle distance indicators and cruise control indicator light

      		 Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

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

      • Certification ECU (Smart key ECU assembly)

      • Power management control ECU

      • Driving support ECU assembly

      • Only units are displayed for drive monitor (instantaneous fuel economy).

      • Only units are displayed for drive monitor (average fuel economy); calculation is stopped until the power switch is turned off or communication returns to normal.

      • Only units are displayed for drive monitor (fuel economy per trip); calculation is stopped until the power switch is turned off or communication returns to normal.

      • Only units are displayed for drive monitor (average vehicle speed); calculation is stopped until the power switch is turned off or communication returns to normal.

      • Calculation of drivable distance (electronic delay) is stopped until the power switch is turned off or communication returns to normal.

      • Customization display is controlled based on a default vehicle speed of 0 km/h (0 mph).

      • Cruise control indicator light does not turn on.

      • Cruise control indicator light maintains the latest status until the power switch is tuned off.

      		 - -

      Parking lock system warning message


      • Switches between displayed/not displayed of the warning message based on the vehicle speed when the parking lock system malfunction is detected

      		 Meter circuit plate

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

      • Transmission control ECU assembly

      		 None - -

      Shift state information after turning the power switch off


      • Sends shift state information because it needs to be displayed on the meter for 2 seconds after the power switch is turned off

      		 Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

      • Transmission control ECU assembly

      		 None -

      [Transmission control ECU assembly]

      U0146

      Neutral (N) display when the power switch is turned off while driving (on (READY) to on (ACC))


      • Sends neutral (N) as current shift state information because neutral (N) continues to be displayed if park (P) is not determined when the power switch is turned off while driving (from on (READY) to on (ACC).

      		 Meter circuit plate

      • Main body ECU (Multiplex network body ECU)

      • Transmission control ECU assembly

      		 None -

      [Transmission control ECU assembly]

      U0146

      Shift state information display after turning the power switch off


      • Sends shift state information because the power source mode can be turned off only when park (P) has been selected when the power switch has been pressed to turn the power source mode off.

      		 Transmission control ECU assembly

      • Main body ECU (Multiplex network body ECU)

      • Power management control ECU

      		 None -

      [Transmission control ECU assembly]

      U0146

      P position switch indicator light display function


      • Uses the P switch indicator lamp to indicate the condition when the power switch is off

      		 Transmission control ECU assembly Main body ECU (Multiplex network body ECU) None -

      [Transmission control ECU assembly]

      U0146

      Shift state information after turning the power switch off


      • Sends shift state information because it needs to be displayed on the meter for 2 seconds after the power switch is turned off

      		 Transmission control ECU assembly Main body ECU (Multiplex network body ECU) None -

      [Transmission control ECU assembly]

      U0146

      Parking lock system warning message


      • Switches between displayed/not displayed of the warning message based on the vehicle speed when the parking lock system malfunction is detected

      		 Transmission control ECU assembly Brake booster with master cylinder assembly (Skid control ECU) None -

      [Transmission control ECU assembly]

      U0146

      P control DTC detection


      • Used to detect +B open (C2309), HV communication line malfunction (C2311), HV system malfunction (C2315), and CAN communication malfunction (U0146)

      		 Transmission control ECU assembly Main body ECU (Multiplex network body ECU) None -

      [Transmission control ECU assembly]

      U0146
      P control CPU sleep control Transmission control ECU assembly Main body ECU (Multiplex network body ECU) IG off state cannot be judged using CAN data. -

      [Transmission control ECU assembly]

      U0146

      P position switch indicator light dimmer control


      • Switches between dimming/not dimming of the P switch indicator light when the dimming/non-dimming signal is received

      		 Transmission control ECU assembly Main body ECU (Multiplex network body ECU) None -

      [Transmission control ECU assembly]

      U0146

      Drive torque control


      • Controls MG1 and MG2 based on engine information received

      		 Power management control ECU ECM Vehicle drives using only the motor HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U0100

      Regenerative cooperative control


      • 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 not performed. HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U0129

      High voltage shut off control when the vehicle is damaged


      • Receives the collision detection signal of an airbag signal and shuts off the system main relays

      		 Power management control ECU Airbag ECU assembly Normal driving HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U0151

      HV system power processing


      • Determines that an IG2 malfunction cannot be judged when power supply ECU communication error occurs

      		 Power management control ECU - Normal driving HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U1107

      Automatic P control


      • Instructs the P control ECU to select park (P) when the automatic P request signal from the power management control ECU is on and vehicle speed measured using the MG2 resolver is lower than the specified value

      		 Power management control ECU Transmission control ECU assembly Normal driving HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U1107

      DTC determination time record


      • Stores the time when a DTC is determined

      		 Power management control ECU Main body ECU (Multiplex network body ECU) Normal driving HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U0140

      Driver door open warning


      • Provides a warning via the meter when the driver door is open with a shift state other than park (P) selected

      		 Power management control ECU

      • Main body ECU (Multiplex network body ECU)

      • Meter circuit plate

      		 Normal driving HV system warning light turns on.

      [Power management control ECU (HV CPU)]

      U0140

      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

      		 Power management control ECU

      • Main body ECU (Multiplex network body ECU)

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

      • ECM

      • Meter circuit plate

      • Transmission control ECU assembly

      		 Remote engine start does not operate. Power switch indicator blinks in amber.

      [Power management control ECU (power management CPU)]

      U0129

      U0293

      Gateway system (between V bus and sub bus 11)


      • Relays data between V bus and sub bus 11

      • Monitors for operation/stoppage of ECUs connected to sub bus 11

      		 Power management control ECU

      • Transmission control ECU assembly

      • Driving support ECU assembly

      • Parking assist ECU

      • Seat belt control ECU

      		 None -

      [Power management control ECU (gateway function)]

      U0103

      U0104

      U1002

      U1100

      U110B

      Gateway system (between V bus and sub bus 12)


      • Relays data between the V bus and sub bus 12

      • Monitors for operation/stoppage of ECUs connected to sub bus 12

      		 Power management control ECU

      • Air conditioning amplifier assembly

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

      • ECM

      		 None -

      [Power management control ECU (gateway function)]

      U0100

      U0129

      U0164

      U1002

      Steering sensor


      • Detects steering angle

      		 Spiral cable with sensor sub-assembly (Steering angle sensor) Brake booster with master cylinder assembly (Skid control ECU) None Slip indicator light turns on. -

      Dynamic radar cruise control system


      • Controls acceleration/deceleration for following a leading vehicle

      		 Driving support ECU assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Meter circuit plate

      • Power management control ECU

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Yaw rate sensor

      • Dynamic radar cruise control system does not operate.

      • Operation of dynamic radar cruise control is canceled.

      • Cruise main indicator light illuminates in amber.

      • Radar cruise control cancellation is displayed on the combination meter display.

      [Driving support ECU assembly]

      U0122

      U0123

      U0126

      U0293

      U1104

      Pre-crash safety system


      • Controls seat belt and brake operation just before a collision

      		 Driving support ECU assembly

      • Main body ECU (Multiplex network body ECU)

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

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Yaw rate sensor

      • Seat belt control ECU

      • Pre-crash safety system does not operate.

      • Pre-crash safety system control does not occur.

      		 PCS indicator blinks.

      [Driving support ECU assembly]

      U0122

      U0123

      U0126

      U0293

      U1100

      U1104

      Intelligent Parking Assist system


      • Displays predicted path guide lines on the screen based on the steering amount when reversing

      • Performs parking assist by indicating the target steering angle while monitoring the steering angle and vehicle speed when reversing

      		 Parking assist ECU

      • Main body ECU (Multiplex network body ECU)

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

      • Power steering ECU assembly

      • Power management control ECU

      • Spiral cable with sensor sub-assembly (Steering angle sensor)

      • Predicted path guide lines are not displayed and a message indicating that the guide lines cannot be displayed appears on the bottom of the screen.

      • During adjustment at the factory, the adjustment cannot be completed.

      • Proper system language for destination cannot be selected.

      • Intelligent parking assist system does not operate.

      • Message is displayed on the navigation screen.

      • Informs the user by voice guidance and message display.

      [Parking assist ECU]

      U0073

      U0100

      U0126

      U0129

      U0131

      U0140

      U0293

      U1000

      [Power steering ECU assembly]

      U1105

      Pre-crash seat belt (operation condition 1)


      • Enhances the effect of the pretensioner by operating the pre-crash seat belt motor to retract the belt when the skid control ECU judges that the vehicle cannot be controlled/vehicle stops suddenly

      		 Seat belt control ECU

      • Main body ECU (Multiplex network body ECU)

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

      		 Control does not occur or only operation condition 1 does not occur (however control continues until retraction completes when communication stops during control). PCS indicator blinks.

      [Seat belt control ECU]

      U0122

      U0140

      Pre-crash seat belt (operation condition 2)


      • Enhances the effect of the pretensioner by operating the pre-crash seat belt motor to retract the belt when the driving support ECU judges that a collision to an object or vehicle in the road ahead is unavoidable

      		 Seat belt control ECU

      • Main body ECU (Multiplex network body ECU)

      • Driving support ECU assembly

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

      		 Control does not occur or only operation condition 2 does not occur (however control continues until retraction completes when communication stops during control) PCS indicator blinks.

      [Seat belt control ECU]

      U0122

      U0140

      U1104

      • *1:


        • Reverse warning buzzer (Single): Controlled based on the latest signal state until the power switch is turned off.

        • Reverse warning buzzer (Intermittent): Stops.

        • Seat belt warning buzzer: Stops.

        • Light reminder buzzer: Stops.

        • Smart key warning buzzer (Continual): Stops.

        • Smart key warning buzzer (Intermittent): Stops.

        • Smart key warning buzzer (Single): Controlled based on the latest signal state.

        • Driving with any door opened warning buzzer: Does not sound.

        • Immobiliser key identification completion buzzer: Controlled based on the latest signal state.

        • Driving with parking brake unreleased warning buzzer: Controlled based on the latest signal state.

        • Dynamic radar cruise control low speed cancel (w/ Dynamic Radar Cruise Control System): Controlled by maintaining the latest condition until the power switch is turned off.

        • Shift operation reject buzzer: Controlled by maintaining the latest condition until the power switch is turned off.

        • Shift selection P request buzzer: Does not sound.

        • HV battery low voltage warning buzzer: Stops.

        • HV battery charge request buzzer: Stops.

        • EV reject buzzer: Stops.

        • Ready buzzer: Controlled based on the latest signal state until the power switch is turned off.

        • EPS warning buzzer: Sounds.

        • Brake system buzzer: Does not sound.

        • Dynamic radar cruise control warning buzzer (w/ Dynamic Radar Cruise Control System): Controlled based on the latest signal state.

        • HV system warning buzzer: Controlled by maintaining the latest condition until the power switch is turned off.


      • *2:


        • SRS warning: Turns on.

        • ABS warning: Turns on.

        • High beam indicator: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • Brake warning: Always turned on or maintains the latest signal state while the power switch is on (IG), and turns off while the power switch is off.

        • Seat belt warning: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off or maintains the latest signal state.

        • Open door warning: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • Electrically controlled brake warning (Brake warning (Yellow)): Maintains the latest signal state until the power switch is turned off.

        • Water temperature warning: Turns on when the input via the direct line satisfies the illumination conditions and turns off when the input via the direct line satisfies the conditions to turn it off.

        • EPS warning: Turns on.

        • Front fog indicator: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • Head indicator: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • Rear fog indicator: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • PCS warning: Does not sound until the power switch is turned off.

        • Slip indicator: Turns on.

        • Tail indicator: Maintains the display state while the power switch is on (IG), and turns off while the power switch is off.

        • Cruise control indicator (for Cruise Control System): Maintains the latest signal state until the power switch is turned off.

        • Cruise control (Constant speed control mode) indicator (Dynamic Radar Cruise Control System): Maintains the latest signal state until the power switch is turned off.

        • Cruise control (Vehicle-to-vehicle distance control mode) indicator (w/ Dynamic Radar Cruise Control System): Maintains the latest signal state until the power switch is turned off.

        • Cruise control SET indicator (for Cruise Control System): Maintains the latest signal state until the power switch is turned off.

        • Cruise control SET indicator (Dynamic Radar Cruise Control System): Maintains the latest signal state until the power switch is turned off.

        • Power mode indicator: Maintains the display state while the power switch is turned off.

        • Charge warning: Maintains the latest signal state until the power switch is turned off.

        • Eco mode indicator: Maintains the latest signal state until the power switch is turned off.

        • EV mode indicator: Maintains the latest signal state until the power switch is turned off.

        • Ready indicator: Maintains the latest signal state until the power switch is turned off or does not turn on.

        • Oil pressure warning: Does not sound.

        • Smart key warning: Maintains the display state while the power switch is on (IG) and does not turn on while the power switch is off.

        • Charge warning: Does not display until the power switch is turned off.

        • Hybrid system warning: Maintains the latest signal state until the power switch is turned off.

        • Hybrid system overheat warning: Maintains the latest signal state until the power switch is turned off.

        • P position request indicator: Maintains the latest signal state until the power switch is turned off.

        • Hybrid battery monitor: Maintains the latest signal state until the power switch is turned off.

        • Parking lock system warning message: Turns on when the vehicle speed is 2 km/h (1 mph) or lower when decelerating and turns off when the vehicle speed is 4 km/h (2 mph) or higher when accelerating.

        • LED head light indicator: Maintains the latest signal state until the power switch is turned off.

        • Turn indicator: Does not sound.