CAN COMMUNICATION SYSTEM(for LHD) 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)

      Status Frame


      • ECU Connection Check

      		 FC converter assembly GTS - GTS cannot recognize ECU. -

      Air Conditioner Heater Linked


      • Linked with the FC stack by hot coolant, making efficient use of heat energy)

      		 EV control ECU

      • FC control ECU

      • Air conditioning amplifier assembly

      • Air conditioner water pump and 3 way valve malfunction cannot be detected

      • Air conditioner temperature change

      • Regeneration amount change

      		 Displays messages on the multi-information display.

      U0164

      (FC control ECU)

      Door Lock


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

      		 Main body ECU (multiplex network body ECU)

      • EV control ECU

      • Airbag ECU assembly

      • Combination meter assembly

      • While the power switch is on (IG), performs operations using the last information before the communication stop.

      • While the power switch is off, the key-linked operation is permitted.

      • The speed-sensitive auto-lock operation is prohibited.

      • The shift-linked auto-lock operation is prohibited.

      • The shift-linked auto-unlock operation is prohibited.

      • Auto lock switching is prohibited.

      		 -

      U0100

      U0101

      U0151

      U0155

      (Main body ECU (multiplex network body ECU))

      Alarm


      • Sounds various warnings.

      		 Main body ECU (multiplex network body ECU)

      • EV control ECU

      • Certification ECU (smart key ECU assembly)

      		 - -

      U0100

      U0120

      U0293

      (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)

      • EV control ECU

      • Combination meter assembly

      		 Luggage compartment door does not open. -

      U0100

      U0101

      U0155

      (Main body ECU (multiplex network body ECU))

      Light Control


      • Daytime running light control.

      		 Main body ECU (multiplex network body ECU) EV control ECU The daytime running light control does not operate. -

      U0100

      U0293

      (Main body ECU (multiplex network body ECU))

      Illumination


      • Performs illumination control.

      		 Main body ECU (multiplex network body ECU)

      • EV control ECU

      • Certification ECU (smart key ECU assembly)

      • The dome light turns off.

      • The mirror foot light turns off.

      • The footwell illumination light adjusted.

      		 The dome light does not turn off immediately after exiting the vehicle.

      U0101

      U0327

      (Main body ECU (multiplex network body ECU))

      Seat and Mirror Control


      • Controls the memory function (the seat and mirror position adjustments).

      		 Main body ECU (multiplex network body ECU)

      • Position control ECU and switch assembly

      • Multiplex tilt and telescopic ECU

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      • Certification ECU (smart key ECU assembly)

      • Combination meter assembly

      • Commands the seat, tilt and telescopic, etc. to stop operating.

      • Controls the memory function playback sequence.

      • Controls the memory call function.

      • Controls the return/away function.

      • When recording the memory call, the operation stops due to a time out when waiting for the verification results.

      		 -

      U0120

      U0155

      U0199

      U0200

      U0208

      U0327

      U1115

      (Main body ECU (multiplex network body ECU))

      Diagnostic/C-BEST


      • Diagnostic phase 4 communication.

      		 - All ECUs connected to CAN Exits diagnostic mode. - -

      Entry Function/Wireless Function


      • Controls the entry function and wireless function.

      		 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))

      Automatic High Beam


      • When a preceding or oncoming vehicle is detected, automatically controls the high beams according to the smart beam sensor.

      		 Main body ECU (multiplex network body ECU)

      • Headlight light control ECU sub-assembly LH

      • Lane departure warning camera

      		 The system does not operate (meter indicator blinks). The meter indicator blinks.

      U0182

      U023A

      (Main body ECU (multiplex network body ECU))

      TPMS


      • Monitors the tire pressure and meter speed, etc. and operates the meter indicators and multi-information display.)

      		 Main body ECU (multiplex network body ECU) Combination meter assembly Sends an initial communication value to the BERKES. The tire pressure monitor sensor indicator in the combination meter assembly blinks for 1 minute and then stays illuminated.

      U0155

      (Main body ECU (multiplex network body ECU))

      Light Control (Light ECU)


      • The light ECU controls the load around the headlights (body ECU sends illumination requests to the light ECU).

      		 Headlight light control ECU sub-assembly LH Main body ECU (multiplex network body ECU) - -

      U0182

      (Main body ECU (multiplex network body ECU))

      Vehicle Damage Determination


      • Determines whether there was a collision according to the airbag signal.

      		 EV control ECU Airbag ECU assembly Driving is normal. Displays messages on the multi-information display.

      U0151

      (EV control ECU)

      Stack G input detection


      • Stack G input history is stored, and the user is encouraged to take the vehicle to a dealer.

      		 EV control ECU Airbag ECU assembly Driving is normal. Displays messages on the multi-information display.

      U0151

      (EV control ECU)

      Air Conditioning Control


      • Assists with passing signals between the air conditioning amplifier assembly and air conditioning inverter.

      		 EV control ECU Air conditioning amplifier assembly Driving is normal.

      • Air conditioning system does not operate.

      • Displays messages on the multi-information display.

      U0424

      (EV control ECU)

      Air Conditioner Heater Linked Control


      • High voltage for Heating

      • Water heating heater operation control

      		 Air conditioning amplifier assembly Air conditioning amplifier assembly Driving is normal.

      • Air conditioning system does not operate.

      • Displays messages on the multi-information display.

      U0424

      (EV control ECU)

      SBW Control


      • Auto P control

      		 EV control ECU Certification ECU (smart key ECU assembly)

      • Detected before on (READY):

        Vehicle can be driven if shift lever moved to other than P within 10 seconds after on (READY). If shift lever is in P after 10 seconds or more have elapsed, "READY" is cancelled

      • Detected during on (READY):

        Vehicle can be driven if shift lever moved to other than P within 10 seconds after on (READY). If shift lever is in P after 10 seconds or more have elapsed, "READY" is cancelled

      		 Displays messages on the multi-information display.

      U1107

      (EV control ECU)

      EV Battery Cooling Control


      • Dust clogging prevention control when door is opened

      		 EV control ECU Main body ECU (multiplex network body ECU) Driving is normal. Displays messages on the multi-information display.

      U0140

      (EV control ECU)

      DC/DC Control


      • Fuel efficiency improvement mode permission judgment

      		 EV control ECU Main body ECU (multiplex network body ECU) Driving is normal. Displays messages on the multi-information display.

      U0140

      (EV control ECU)

      Regenerative Brake Coordinate Control


      • Attempts to increase the amount of energy recovered by coordinating control with the electronically controlled brake system.

      		 Skid control ECU (brake booster with master cylinder assembly) Skid control ECU (brake booster with master cylinder assembly) Driving is normal.

      • Displays messages on the multi-information display.

      • Regenerative braking and TRC is prohibited.

      • Bs mode indicator light does not illuminates.

      U0129

      (EV control ECU)

      Br Mode Control


      • Deceleration torque is generated by service brake

      		 Skid control ECU (brake booster with master cylinder assembly) Skid control ECU (brake booster with master cylinder assembly)

      • Regenerative braking is prohibited.

      • Bs mode is cancelled

      • Displays messages on the multi-information display.

      • Regenerative braking and TRC is prohibited.

      • Bs mode indicator light does not illuminates.

      U0129

      (EV control ECU)

      Electronic Power Steering System


      • Calculates the current to be used for the steering assist according to the torque sensor value and vehicle speed, and then operates the motor.

      		 Power steering ECU assembly

      • EV control ECU

      • Combination meter assembly

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

      • Spiral cable with sensor sub-assembly

      • Electronic power steering does not operate.

      • Control is performed temporarily with the steering assist amount set to that used when the vehicle speed is 100 km/h (62 mph).

      • The steering feel becomes worse (compensation control using the steering angle is stopped).

      		 The EPS warning light illuminates.

      U0129

      U0293

      (Power steering ECU assembly)

      Simple Load Control


      • Determines the current power supply and load status, and sends commands to limit control.

      		 Power steering ECU assembly Air conditioning amplifier assembly - - -

      αB Control


      • Performs assist to prevent sliding sideways.

      		 Skid control ECU (brake booster with master cylinder assembly) Power steering ECU assembly During αB control, if the CAN communication data becomes invalid, control stops. EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      Steering Assist Calculation


      • Changes the assist force according to the vehicle speed.

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

      w/ α:


      • Control continues temporarily with a set speed of 100 km/h (62 mph) as the system is unable to recognize the actual vehicle speed.

      • The steering wheel feels heavy below vehicle speeds of 100 km/h (62 mph) and feels light at vehicle speeds exceeding 100 km/h (62 mph).

      w/ B:


      • Control continues temporarily with a set speed of 70 km/h (43 mph) as the system is unable to recognize the actual vehicle speed.

      • The steering wheel feels heavy below vehicle speeds of 70 km/h (43 mph) and feels light at vehicle speeds exceeding 70 km/h (43 mph).

      		 EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      Assist Start Judgment


      • Permits assist only when the EV system on or while driving the vehicle.

      		 Power steering ECU assembly

      • EV control ECU

      • Spiral cable with sensor sub-assembly

      • When communication is lost with EV control ECU only: No assist when the vehicle speed is 0 km/h (0 mph). Assist starts when the vehicle speed is 0.1 km/h (0 mph) or more.

      • When communication is lost with skid control ECU only: No assist in the READY off state and assist starts temporarily with a set speed of 100 km/h (62 mph) when in the READY on state.

      w/ α:


      • When communication is lost with EV control ECU and skid control ECU: Assist starts temporarily with a set speed of 100 km/h (62 mph).

      • When communication is lost with EV control ECU only: The EPS warning light illuminates before assist starts. Once assist starts, there is no indication of a failure.

      • When communication is lost with Skid control ECU (brake booster with master cylinder assembly) only: The EPS warning light illuminates.

      U0129

      U0293

      (Power steering ECU assembly)

      Assist Start Judgment


      • Permits assist only when the EV system on or while driving the vehicle.

      		 Power steering ECU assembly

      • EV control ECU

      • Spiral cable with sensor sub-assembly

      w/ B:


      • When communication is lost with EV control ECU and skid control ECU: Assist starts temporarily with a set speed of 70 km/h (43 mph).

      • When communication is lost with EV control ECU and Skid control ECU (brake booster with master cylinder assembly): The EPS warning light illuminates before assist starts. Once assist starts, there is no indication of a failure.

      U0129

      U0293

      (Power steering ECU assembly)

      DTC Output


      • When the TC signal is on, DTC information is sent according to the polling from MET.

      		 Combination meter assembly Power steering ECU assembly - - -

      Assist Map Selection


      • Selects the assist map according to the destination information, drive train, etc.

      		 Power steering ECU assembly

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

      • EV control ECU

      • A temporary map is used to perform assist as an assist map cannot be selected according to vehicle specifications.

      • Steering feel may be unusual.

      • The frame used to select the assist map may change depending on the vehicle.

      		 There is no indication of a communication problem. However, the EPS warning light illuminates because an assist map is not selected. -

      Warning Light Illumination


      • When the fail-safe function operates, a request to turn on the electronic power steering light is sent to the combination meter.

      		 Combination meter assembly Power steering ECU assembly - - -

      Steering Center Point Learning


      • Learns the steering wheel center point.

      		 Power steering ECU assembly

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

      • Spiral cable with sensor sub-assembly

      • Airbag ECU assembly

      		 The steering wheel center point is not learned if there is a problem with CAN communication. EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      Compensation Control


      • Performs assist according to the vehicle speed for various compensation controls.

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

      w/ α:

      When there is a problem with CAN communication (vehicle speed signal), the various controls operate with a set vehicle speed of 100 km/h (62 mph).

      w/ B:

      When there is a problem with CAN communication (vehicle speed signal), the various controls operate with a set vehicle speed of 70 km/h (43 mph).

      		 EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      ECE79


      • Air conditioner operation is stopped to reduce electrical current consumption of the auxiliary battery when voltage has become low

      		 Power steering ECU assembly Air conditioning amplifier assembly - - -

      Entry and Start Function


      • Entry lock/unlock and back door unlatch

      • Entry and start warnings

      • Entry illumination (dome light illumination, etc.)

      • EV control system possible display

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • Certification ECU (smart key ECU assembly)

      • An entry unlock retry is performed.

      • The previous value is maintained.

      When transmission is abnormal:


      • The entry lock/unlock and back door open/unlatch do not operate.

      • The entry and start warnings (the key lock-in prevention warning, the leaving with the key warning, key reminder, etc.) and the key lock-in prevention function do not operate.

      • Entry illumination does not operate. When there is a reception stop:

      • The entry and start warnings (the key lock-in prevention warning, the leaving with the key warning, key reminder, etc.), the EV system on possible display, and the key lock-in prevention function do not operate.

      U0142

      U0155

      (Certification ECU (smart key ECU assembly))

      Entry and Start Function


      • Entry lock/unlock and back door unlatch

      • Entry and start warnings

      • Entry illumination (dome light illumination, etc.)

      • EV control system possible display

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • Certification ECU (smart key ECU assembly)

      • An entry unlock retry is performed.

      • The previous value is maintained.

      • The answer back function repeats a maximum of 3 times when an unlock operation is performed. However, this only occurs when the main body ECU (multiplex network body ECU) can receive requests from the certification ECU (smart key ECU assembly).

      • When the power switch is on (IG), the entry lock/unlock and back door unlatch do not operate.

      U0142

      U0155

      (Certification ECU (smart key ECU assembly))

      Wireless Function


      • Operates the wireless lock/unlock functions, etc.

      		 Main body ECU (multiplex network body ECU)

      • Main body ECU (multiplex network body ECU)

      • Certification ECU (smart key ECU assembly)

      		 -

      • Wireless lock/unlock function do not operate.

      • When the power switch on (IG), the wireless lock/unlock function operate.

      U0142

      (Certification ECU (smart key ECU assembly))

      Memory Function


      • Moves the seat to the recorded positions when an entry unlock or wireless unlock operation is performed.

      		 Main body ECU (multiplex network body ECU)

      • Main body ECU (multiplex network body ECU)

      • Position control ECU and switch assembly

      • Multiplex tilt and telescopic ECU

      • Certification ECU (smart key ECU assembly)

      		 -

      • The memory recall function does not operate.

      • The memory key registration does not operate.

      U0142

      (Certification ECU (smart key ECU assembly))

      Power Switch Lettering Illumination Control


      • Operates the power switch lettering illumination in conjunction with the dome light illumination, etc.

      		 Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • If the power switch letters are illuminated due to the dome light, the illumination turns off.

      • When the DC cut fuse is removed and the power switch letters are illuminated due to the panel illumination, the illumination turns off.

      • The previous value is maintained.

      • If the power switch letters are not illuminated, they do not illuminate.

      • If the power switch letters are illuminated due to the panel illumination, the illumination does not turn off.

      • If the power switch letters are illuminated due to the dome light, the illumination turns off.

      • When the DC cut fuse is removed and the power switch letters are illuminated due to the panel illumination, the illumination turns off.

      U0142

      (Certification ECU (smart key ECU assembly))

      Security Indicator Display Function


      • Displays the immobiliser security condition.

      		 Certification ECU (smart key ECU assembly)

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

      • EV control ECU

      		 -

      • Security condition cannot display normally (illuminates during security warning preparation/security warning).

      • The entry and start warnings do not operate properly. (The timing for stopping the EV system start operation method display when starting the EV system is delayed.The smart key portable device low battery warning does not operate when starting the EV system.)

      U0142

      U0293

      (Certification ECU (smart key ECU assembly))

      ABS control


      • Helps prevent wheel lockup during sudden stops.

      		 Skid control ECU (brake booster with master cylinder assembly) Airbag 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.

      • ECB warning light illuminates.

      • Brake warning light / red illuminates.

      • ABS warning light illuminates.

      • SLIP indicator light illuminates.

      U0073

      U0123

      U0124

      (Skid control ECU (brake booster with master cylinder assembly))

      VSC/TRC/VDIM control


      • Suppresses vehicle instability, such as sliding sideways when cornering and wheel slippage when accelerating from rest. VDIM control manages individual control systems, including the electronic power steering, to ensure cooperative control.

      		 Skid control ECU (brake booster with master cylinder assembly)

      • EV control ECU

      • Airbag ECU assembly

      • Spiral cable with sensor sub-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.

      • ECB warning light illuminates.

      • Brake warning light / red illuminates.

      • ABS warning light illuminates.

      • SLIP indicator light illuminates.

      U0073

      U0123

      U0124

      U0126

      U0293

      (Skid control ECU (brake booster with master cylinder assembly))

      EV vehicle Regenerative Brake Coordinated Control


      • Performs regenerative brake coordinated control with the EV control system.

      		 Skid control ECU (brake booster with master cylinder assembly)

      • EV control ECU

      • Airbag ECU assembly

      During control:


      • When normal control is complete, hybrid vehicle regenerative brake coordinated control is prohibited.

      Not during control:


      • Control will not be started.

      • ECB warning light illuminates.

      • Brake warning light / red illuminates.

      • ABS warning light illuminates.

      • SLIP indicator light illuminates.

      U0123

      U0124

      (Skid control ECU (brake booster with master cylinder assembly))

      During control:


      • Control is continued with previous values and then the brake pedal control amount is gradually changed. Then, hybrid vehicle regenerative brake coordinated control is prohibited.

      Not during control:


      • Control will not be started.

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

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

      • ABS warning light illuminates.

      • SLIP indicator light illuminates.

      U0073

      U0120

      U0293

      (Skid control ECU (brake booster with master cylinder assembly))

      Hill-start Assist Control


      • With the vehicle stopped on a slope, maintains the brake oil pressure for 2 seconds when the brake pedal is released when starting off.

      		 Skid control ECU (brake booster with master cylinder assembly)

      • EV control ECU

      • Airbag ECU assembly

      • Spiral cable with sensor sub-assembly

      During control:


      • When backup control (depressurization control) is complete, hill-start assist control is prohibited.

      Not during control:


      • Control will not be started.

      • ECB warning light illuminates.

      • Brake warning light / red illuminates.

      • ABS warning light illuminates.

      • SLIP indicator light illuminates.

      U0073

      U0293

      (Skid control ECU (brake booster with master cylinder assembly))

      During control:


      • When normal control is complete, hill-start assist control is prohibited.

      Not during control:


      • Control will not be started.

      • Brake warning light / red illuminates.

      • ABS warning light illuminates.

      • SLIP indicator light red illuminates.

      U0123

      U0124

      U0126

      (Skid control ECU (brake booster with master cylinder assembly))

      Leveling


      • Adjust the vertical beam axis direction of the headlights according to the pitch angle calculated using the wheel speeds and vehicle height sensor value.

      		 Headlight light control ECU sub-assembly LH

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

      • Main body ECU (multiplex network body ECU)

      		 Leveling control stops (beam axis position is stopped at position when malfunction was detected). -

      U0129

      U0142

      (Headlight light control ECU sub-assembly LH)

      Leveling Indicator


      • Monitors leveling system malfunctions and when a malfunction is detected, sends an indicator illumination request to the combination meter assembly.

      		 Headlight light control ECU sub-assembly LH Combination meter assembly Maintains the leveling indicator state. - -

      Destination Determination


      • Crosschecks the destination set by the factory with the destination information from the CAN bus line.

      • The leveling pitch angle calculation constant and the illumination operations of each light differ according to the destination.

      		 Combination meter assembly Main body ECU (multiplex network body ECU) - -

      U0142

      (Headlight light control ECU sub-assembly LH)

      Low Beam, High Beam


      • Turns the specified light source on and off according to low beam, high beam command data.

      		 Main body ECU (multiplex network body ECU) Headlight light control ECU sub-assembly LH

      When power switch on (IG): Forces the low beams and clearance lights to illuminate.

      When power switch off: Maintains previous values.

      		 -

      U0142

      (Headlight light control ECU sub-assembly LH)

      LED Headlight Indicator


      • Monitors low beam LED malfunctions and when a malfunction is detected, sends an indicator illumination request to the combination meter assembly.

      		 Headlight light control ECU sub-assembly LH Combination meter assembly Maintains the LED headlight indicator status. - -

      Clearance Sonar Settings/Notification


      • Controls the settings for the clearance sonar screen notifications which are set by remote touch operation, displays the sonar status and plays voice warnings.

      		 Radio and display receiver assembly

      • Clearance warning ECU assembly

      • EV control ECU

      • If a communication stop occurs while the clearance sonar settings screen is displayed, the settings screen is cleared.

      • If a communication stop occurs while the clearance sonar sensor screen is displayed, the sensor screen is cleared.

      • The clearance sonar icon displayed on the vehicle settings screen is cleared.

      • Cannot switch to the camera screen (clearance sonar screen does not display on the camera screen).

      U0100

      U1110

      (Radio and display receiver assembly)

      Destination Determination


      • Determines the destination based on the destination symbol and destination package information and selects the display language, time zone, etc.

      		 Radio and display receiver assembly Main body ECU (multiplex network body ECU) Determines the destination according to the last received value and operates accordingly (if there is no last received value, the system operates using the default value). The time zone and language selection screens do not match the destination.

      U0140

      (Radio and display receiver assembly)

      Vehicle Customize Function


      • Changes the behavior and control parameters of various functions (illumination lighting time, etc.) according to the user operation via the screen.).

      		 Radio and display receiver assembly

      • Main body ECU (multiplex network body ECU)

      • Air conditioning amplifier assembly

      • Certification ECU (smart key ECU assembly)

      • Position control ECU and switch assembly

      • Multiplex tilt and telescopic ECU

      • When a remote communication usage application is performed (customize or remote diagnosis), the information is processed regardless of whether the main body ECU (multiplex network body ECU) has permitted or prohibited remote communication.

      • 3 retries are performed (including the first time).

      		 The customize options for items related to the ACN, BDB, IDT, DST and TAT ECU are not displayed or the settings cannot be saved.

      U0073

      B15F5

      B15F6

      B15F7

      B15F8

      (Radio and display receiver assembly)

      Time Stamp Function


      • Matches the relative time from the main body ECU with the absolute time acquired from the GPS.

      		 Main body ECU (multiplex network body ECU) Main body ECU (multiplex network body ECU) - -

      U0073

      U0140

      (Radio and display receiver assembly)

      Rear View Monitor Control


      • Displays the rear view of the vehicle.

      		 Radio and display receiver assembly

      • EV control ECU

      • Main body ECU (multiplex network body ECU)

      		 - Cannot switch to the camera screen.

      U0100

      (Radio and display receiver assembly)

      Meter-linked Function


      • Changes display based on customization information set through the meter. Outputs the customization information set in the system.

      		 Radio and display receiver assembly Combination meter assembly Maintains the last valid state. - -

      Microcomputer Preset Steering


      • Automatically starts the auto away and auto return operations for the steering wheel according to a signal that indicates when the key is inserted or removed.

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

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

      		 Multiplex tilt and telescopic ECU

      • Main body ECU (multiplex network body ECU)

      • Position control ECU and switch assembly

      • Combination meter assembly

      		 - The memory, recall, auto return, auto away and manual functions do not operate.

      U0142

      U0208

      B2624

      (Multiplex tilt and telescopic ECU)

      Microcomputer Preset Driving Position System


      • Controls the seat position according to the operation conditions main body ECU (multiplex network body ECU) request, shift position and vehicle speed.

      		 Position control ECU and switch assembly

      • Main body ECU (multiplex network body ECU)

      • EV control ECU

      • Combination meter assembly

      • Multiplex tilt and telescopic ECU

      		 The memory system and memory call do not operate. The memory system and memory call do not operate. -

      Light Control


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

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) The mirror foot lights do not operate. The mirror foot lights do not operate.

      U0142

      (Outer mirror control ECU assembly LH)

      U0142

      (Outer mirror control ECU assembly RH)

      Mirror Operation Control


      • Controls the operation of the outer mirrors according to the mirror switch information from the main body ECU (multiplex network body ECU), etc.

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) The mirrors do not operate manually. The mirrors do not operate manually.

      U0142

      (Outer mirror control ECU assembly LH)

      U0142

      (Outer mirror control ECU assembly RH)

      Mirror Heaters


      • Controls the operation of the mirror heaters based on signals such as the defogger switch signal from the air conditioning amplifier assembly.

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      • Main body ECU (multiplex network body ECU)

      • Air conditioning amplifier assembly

      		 The mirror heaters do not operate. The mirror heaters do not operate.

      U0142

      (Outer mirror control ECU assembly LH)

      U0142

      (Outer mirror control ECU assembly RH)

      Outer Mirror Retraction Control


      • Controls the electronic retraction operation of the outer mirrors according to the mirror switch information from the main body ECU (multiplex network body ECU), etc.

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) The electronic mirror retraction function does not operate. The electronic mirror retraction function does not operate. -

      Mirror Reverse Control


      • Controls the reverse operation of the outer mirrors based on reverse request information from the main body ECU (multiplex network body ECU).

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU) The reverse shift-linked function does not operate. The reverse shift-linked function does not operate. -

      Mirror Memorization and Recall Control


      • Memorizes and recalls the mirror position of the outer mirrors based on the memory request from the main body ECU (multiplex network body ECU).

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 Main body ECU (multiplex network body ECU)

      • The mirror recall function does not operate.

      • The mirror memorization function does not operate.

      • The mirror recall function does not operate.

      • The mirror memorization function does not operate.

      		 -

      Memory Switch Signal Substitute Transmission


      • Sends the memory switch signal via CAN communication.

      		 Main body ECU (multiplex network body ECU)

      • Outer mirror control ECU assembly LH

      • Outer mirror control ECU assembly RH

      		 - The seat and mirror position memorization and recall functions do not operate. -

      Inverter Drive Control


      • Inverter operation is controlled according to vehicle status signal and inverter status signal

      		 Air conditioning amplifier assembly EV control ECU Target RPM set to 0, inverter stopped by STB OFF -

      U0293

      (Air conditioning amplifier assembly)

      Initialize Control


      • Initialization control by the steering wheel signal

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Previous values are maintained. -

      U0142

      (Air conditioning amplifier assembly)

      Panel Dimming Control


      • Outputs dimming information to the A/C panel according to the display dimming information.

      		 Air conditioning amplifier assembly Integration control and panel assembly While the power switch is on (IG), previous values are maintained. -

      U1114

      (Air conditioning amplifier assembly)

      Destination Determination Control


      • Changes air conditioning control pattern according to the destination information.

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) While the power switch is on (IG), previous values are maintained. -

      U0142

      (Air conditioning amplifier assembly)

      Solar Calibration Control


      • Calibrates air conditioning control using the value from the solar sensor.

      		 Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) After communication interruption confirmed, sunlight level is handled as "0" - -

      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). -

      U0155

      (Air conditioning amplifier assembly)

      EV System Indicator


      • EV system operation status reported by message and buzzer

      		 Combination meter assembly EV control ECU Display changes due to communication malfunction Status display retains the status, others are handles as "0"

      U0100

      (Combination meter assembly)

      ECB Warning Notification


      • Notification of ECB related malfunctions by messages and buzzer

      		 Combination meter assembly Skid control ECU (brake booster with master cylinder assembly) Display changes due to communication malfunction

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

      • ECB warning light illuminates.

      U0129

      (Combination meter assembly)

      EPS Warning Notification


      • Notification of EPS related malfunctions by messages and buzzer

      		 Combination meter assembly Power steering ECU assembly Display changes due to communication malfunction EPS warning light illuminates.

      U0131

      (Combination meter assembly)

      Main Body System Information Notification


      • Notification of main body system related information by messages and buzzer

      		 Combination meter assembly Main body ECU (multiplex network body ECU) - -

      U0142

      (Combination meter assembly)

      Airbag System Warning Notification


      • Notification of airbag system related malfunctions by messages and buzzer

      		 Combination meter assembly Airbag ECU assembly Display changes due to communication malfunction Airbag warning light illuminates.

      U0151

      (Combination meter assembly)

      LDA Operating Condition Notification


      • Notification of LDA related operating conditions by messages and buzzer

      		 Combination meter assembly Lane departure warning camera Previous values are maintained. Warning display retains the conditions, so the malfunction continues to be displayed

      U023A

      (Combination meter assembly)

      ACC/PCS Operating Condition Notification


      • Notification of ACC/PCS related operating conditions by messages and buzzer

      		 Combination meter assembly Driving support ECU assembly Previous values are maintained. Warning display retains the conditions, so the malfunction continues to be displayed

      U1104

      (Combination meter assembly)

      Headlight Leveling System Warning Notification


      • Notification of headlight leveling system related malfunctions by messages and buzzer

      		 Combination meter assembly Headlight light control ECU sub-assembly LH The previous values are kept until the power switch is turned off Previous values are displayed until power switch turned off

      U0182

      (Combination meter assembly)

      Configuration Information Notification to Meter


      • Notifications about language settings, etc. is sent to the meter

      		 Radio and display receiver assembly Radio and display receiver assembly Display changes due to communication malfunction Design lines disappear from multi display

      U0163

      (Combination meter assembly)

      TC DTC Output Service


      • While TC = ON is being received from the ECM, a DTC is output in response to the request from the combination meter assembly.

      		 Combination meter assembly

      • Airbag ECU assembly

      • EV control ECU

      		 If the TC signal is lost during TC service (TC = ON), the TC is determined to be OFF and TC service ends. - -

      Timestamp


      • Records DTCs and timestamps received from the main body ECU.

      		 Airbag ECU assembly Main body ECU (multiplex network body ECU) Changes to a separate count inside the ECU and sets separate count recognition information when it receives a fail value or communication stops. - -

      Collision Detection Signal


      • Notifies the system of a collision in order to perform fuel cut, EV high voltage cut, EDR trigger, etc. when a vehicle collision occurs.

      		 EV control ECU Airbag ECU assembly - - -

      Airbag Warning Light Control


      • Sends airbag warning light illumination information.

      		 Combination meter assembly Airbag ECU assembly - - -

      Seat Belt Warning Control


      • Sends information about the passengers in order to turn the seat belt warning on and off.

      • Combination meter assembly

      • Main body ECU (multiplex network body ECU)

      		 Airbag ECU assembly - - -

      Trigger Signal/Autonomous Transmission


      • Outputs the yaw rate sensor signal.

      		 Airbag ECU assembly Skid control ECU (brake booster with master cylinder assembly) The yaw rate sensor information signal is sent at regular intervals every 0.012 seconds. - -

      Event Data Recorder (EDR)


      • Records conditions, such as the vehicle speed, the amount the accelerator is depressed, and the shift lever position when the event data recorder recording conditions are met.

      		 Airbag ECU assembly

      • EV control ECU

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

      • Driving support ECU assembly

      • Spiral cable with sensor sub-assembly

      • Combination meter assembly

      • An invalid value is recorded in the EDR.

      • Maintains previous values.

      		 - -

      Drive Data Recorder (DDR)


      • Records conditions such as the vehicle speed, the amount the accelerator is depressed, and the shift lever position when the drive data recorder recording conditions are met.

      		 Airbag ECU assembly

      • Main body ECU (multiplex network body ECU)

      • Driving support ECU assembly

      • Lane departure warning camera

      • EV control ECU

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

      • Power steering ECU assembly

      • Combination meter assembly

      • Spiral cable with sensor sub-assembly

      • An invalid value is recorded in the DDR.

      • Maintains previous values.

      		 - -

      Steering Angle Sensor


      • Detects the vehicle steering angle.

      		 Spiral cable with sensor sub-assembly Skid control ECU (brake booster with master cylinder assembly) The steering angle sensor information signal is sent at regular intervals every 0.12 seconds. - -

      Clearance Sonar Customize


      • Changes the clearance sonar settings when the user operates the display.

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • Radio and display receiver assembly

      		 - - -

      Shift position judgment


      • Uses received shift position signal as a clearance sonar detection operation condition.

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • EV control ECU

      		 Control operates with the default shift position P. -

      U0101

      (Clearance warning ECU assembly)

      Vehicle speed judgment


      • Receives vehicle speed signals and changes the clearance sonar detection conditions accordingly.

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • Combination meter assembly

      		 Clearance sonar detection will be operated based on a vehicle speed of 20 km/h or more. -

      U0155

      (Clearance warning ECU assembly)

      Voice Warning Availability Confirmation


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

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • Main body ECU (multiplex network body ECU)

      		 There is no voice warning. - -

      Vehicle Local Time Synchronization


      • Receives the vehicle local time and uses it for synchronizing the local time of the clearance sonar.

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • Main body ECU (multiplex network body ECU)

      		 Continues an independent count. - -

      Driver Seat Module Switch / Mute Switch Judgment


      • According to driver seat module switch/mute switch judgment, receives clearance sonar system settings and uses them for changes

      		 Clearance warning ECU assembly

      • Clearance warning ECU assembly

      • Integration control and panel assembly

      		 Operates according to last condition -

      U1114

      (Clearance warning ECU assembly)

      Dynamic Radar Cruise Control


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

      		 Driving support ECU assembly

      • EV control ECU

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

      • Airbag ECU assembly

      • Spiral cable with sensor sub-assembly

      • Combination meter assembly

      • Main body ECU (multiplex network body ECU)

      • Radar cruise control is canceled.

      • The fail-safe function operates only during dynamic radar cruise control.

      		 Displays a warning message or illuminates the cruise control indicator in yellow (when cruise control switch is on).

      U0125

      U0126

      U0293

      (Driving support ECU assembly)

      Pre-crash Safety


      • Controls brakes immediately before a collision.

      		 Driving support ECU assembly

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

      • EV control ECU

      • Spiral cable with sensor sub-assembly

      • Airbag ECU assembly

      • Main body ECU (multiplex network body ECU)

      		 Pre-crash control is stopped. Pre-crash safety indicator flashes and warning message displays (pre-crash safety system can operate).

      U0125

      U0126

      U0129

      U0293

      (Driving support ECU assembly)

      Lane Departure Warning


      • Warns the user when the vehicle deviates from its lane.

      		 Lane departure warning camera

      • Main body ECU (multiplex network body ECU)

      • Combination meter assembly

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

      • Driving support ECU assembly

      • Airbag ECU assembly

      • EV control ECU

      		 Stops detection and the buzzer output stops immediately. A malfunction message is displayed.

      U0101

      U0104

      U0123

      U0129

      U0142

      U0155

      (Lane departure warning camera)

      AHB


      • Controls high beams.

      		 Lane departure warning camera

      • Main body ECU (multiplex network body ECU)

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

      • Airbag ECU assembly

      • EV control ECU

      		 Maintains the current conditions. The automatic high beam indicator light blinks.

      U0101

      U0123

      U0129

      U0142

      (Lane departure warning camera)

      Blind Spot Monitor, Rear Cross (Crossing) Traffic Alert


      • Warns the driver when the system detects a vehicle in the blind spots of the outer mirrors.

      		 Blind spot monitor sensor RH

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

      • Spiral cable with sensor sub-assembly

      • EV control ECU

      • Main body ECU (multiplex network body ECU)

      		 Maintains previous values. The BSM telltale illuminates.

      U0126

      U0129

      U0142

      U0293

      (Blind spot monitor sensor RH)

      Clearance Sonar Switch Information Output


      • Receives the clearance sonar switch signal from the integration control and panel assembly, and switches the clearance sonar system ON/OFF

      		 Clearance warning ECU assembly Combination meter assembly Maintains previous values. When clearance sonar switch in the combination meter is operated, the telltale light in the combination meter does not illuminate

      U0155

      (Integration control and panel assembly)

      ECO Switch, Seat Heater Switch Information Output


      • ECO mode and seat heater operated by touch panel switch operation

      • EV control ECU

      • Air conditioning amplifier assembly

      		 - -

      • Does not enter ECO mode

      • Seat heater does not operate

      		 -

      Air Conditioner Switch Information Output


      • Air conditioner functions operated by touch panel switch operation

      		 Air conditioning amplifier assembly - - Air conditioner related functions do not operate -

      Air Conditioner Display


      • Air conditioner display signal is received from air conditioning amplifier assembly, and status is displayed by TFT and indicator

      		 - Air conditioning amplifier assembly - Air conditioner related functions do not operate

      U0164

      (Integration control and panel assembly)

      Display Dimming Signal


      • Lighting and TFT change between dimmed/not dimmed according to display dimming signal

      		 - Main body ECU (multiplex network body ECU) Maintains previous values.

      • When TAIL ON, illumination does not change to nighttime blue

      • When TAIL ON to OFF, illumination does not change to daytime white

      U0142

      (Integration control and panel assembly)

      Shift Information Display After IG OFF


      • After power switch off, because regulations require the shift position to be displayed on the meter for 2 seconds, the shift information is sent

      		 Combination meter assembly Main body ECU (multiplex network body ECU) - -

      U0146

      (Transmission control ECU assembly)

      Shift Information Display When ACC ON and Shift Position in the N Range


      • With the power switch on (ACC), and the shift position is not securely in the P position, shift position "N" is continuously displayed to show the current shift position.

      		 Combination meter assembly Main body ECU (multiplex network body ECU) - -

      U0146

      (Transmission control ECU assembly)

      Shift Information Communication Function After IG OFF


      • At the time of power switch on (ACC), if the shift information is not "P Range", "ALL OFF" cannot be performed, so the shift position information is used.

      		 Transmission control ECU assembly Main body ECU (multiplex network body ECU) - -

      U0146

      (Transmission control ECU assembly)

      P Switch Indicator Light Display Function


      • Used as the P switch indicator light turn-off condition when power switch off

      		 Transmission control ECU assembly Main body ECU (multiplex network body ECU) - Light turn-off time becomes longer than usual.

      U0146

      (Transmission control ECU assembly)

      P control DTC detection


      • Used to detect +B open (C2309), EV system malfunction (C2315), and CAN communication malfunction (U0146).

      		 Transmission control ECU assembly Main body ECU (multiplex network body ECU) - -

      U0146

      (Transmission control ECU assembly)
      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. -

      U0146

      (Transmission control ECU assembly)

      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) - P switch indicator light does not change between dimmed/not dimmed modes

      U0146

      (Transmission control ECU assembly)