CAN COMMUNICATION SYSTEM(for LHD) FAIL-SAFE CHART


  1. FAIL-SAFE FUNCTION


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

    2. Effects on each system when communication is impossible (for further details, see the pages for each system).

      Function

      1. Control Master

      2. System Related

      3. Control Actuator

      		 Behavior during CAN Failure
      Vehicle Behavior Indicator and Buzzer Diagnostic Trouble Code

      Air Conditioning Control


      • Adjusts the engine speed by performing idle up, etc.

      • Adjusts the air temperature, airflow mode and airflow volume according to the engine coolant temperature.

      • Adjusts the engine coolant temperature compensation map information and switches the value for determining whether the compressor is locked according to the engine type.

      1. Air conditioning amplifier assembly

      2. ECM

      3. -

      • While the power switch is on (IG), control is performed with the engine coolant temperature set to the default value of 80°C (176°F).

      • While the power switch is on (IG), control is performed with the default setting for the engine type (the default setting depends on the vehicle type).

      		 Nothing U0293

      Simple Load Control

      (Limits simple electrical load control according to the load control level.)

      1. Air conditioning amplifier assembly

      2. Power steering ECU assembly

      3. -

      		 While the power switch is on (IG), previous values are maintained (during a reset, there is no load control). Nothing U0131

      Panel Dimming Control

      (Outputs dimming information to the LIN panel according to the display dimming information.)

      1. Air conditioning amplifier assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), previous values are maintained (during a reset, dimming control is performed). Cannot switch between dimming states. U0142

      Destination Determination Control

      (Switches the A/C control pattern according to the destination information.)

      1. Air conditioning amplifier assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), previous values are maintained. Nothing U0142

      Solar Calibration Control

      (Calibrates air conditioning control using the value from the solar sensor.)

      1. Air conditioning amplifier assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), previous values are maintained. Nothing U0142

      Outside Temperature Compensation Control

      (Changes the air conditioning system operation state and adjusts the outside temperature display value according to the vehicle speed.)

      1. Air conditioning amplifier assembly

      2. Combination meter assembly

      3. -

      		 While the power switch is on (IG), control is performed with the default vehicle speed value (0 km/h [0 mph]).

      • The accuracy of the displayed outside temperature becomes less reliable.

      • The proper airflow volume level for the air conditioning system may be incorrect (while the power switch is on [IG]).

      		 U0155

      Air Conditioning Eco Control

      (Eco-mode control is performed.)

      1. Air conditioning amplifier assembly

      2. ECM

      3. -

      		 While the power switch is on (IG), previous values are maintained (after a reset, the system stays in its normal state of operation). Nothing -

      Remote Start Control

      (Controls the air conditioning operation state according to remote start information.)

      1. Air conditioning amplifier assembly

      2. Bus buffer ECU

      3. -

      		 While the power switch is on (IG), remote start control is not performed. While the power switch is on (IG), the A/C system does not begin operation according to the remote start information. -

      Meter Display Request

      (Sends requests to the combination meter to illuminate various indicators and display various items on the multi-information display.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Nothing The engine coolant temperature, fuel consumption values, etc., are not properly displayed. -

      Fuel Gauge Reception

      (Used for determining when the vehicle has ran out of fuel.)

      1. Combination meter assembly

      2. ECM

      3. -

      		 Nothing Nothing -

      Electric Fan

      (Controls the electric fan motor by air conditioning request.)

      1. ECM

      2. Air conditioning amplifier assembly

      3. -

      		 Electric fan operates in fail-safe mode. Nothing -

      Driving Control

      (Controls the engine and magnetic clutch after receiving engine information.)

      1. Hybrid vehicle control ECU

      2. ECM

      3. -

      		 Vehicle uses motor. The MIL illuminates. U0100

      Vehicle Damage Determination

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

      1. Hybrid vehicle control ECU

      2. Airbag ECU assembly

      3. -

      		 Driving is normal. Nothing U0151

      Air Conditioning Control

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

      1. Air conditioning amplifier assembly

      2. Air conditioning amplifier assembly

      3. -

      		 Driving is normal. Nothing

      • U0140

      • U0164

      Regenerative Brake Coordinate Control

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

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

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

      3. -

      		 Regenerative braking is prohibited. Nothing

      • U0126

      • U0129

      • U1107

      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.)

      1. Power steering ECU assembly

      2. ECM, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control ECU

      3. Power steering ECU assembly, Combination meter 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.

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

      		 The electronic power steering warning light (yellow) illuminates.

      • U0100

      • U0129

      • U0293

      Lane Departure Alert System

      (Calculates the current to be used for the steering assist according to the commanded torque value from the lane departure warning camera, and then operates the motor.)

      1. Lane departure warning camera

      2. Driving support ECU assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU)

      3. Power steering ECU assembly

      		 Steering assist control ends. Nothing U1104

      Simple Load Control

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

      1. Power steering ECU assembly

      2. Power steering ECU assembly

      3. Air conditioning amplifier assembly

      		 -

      αB Control

      (Performs assist to prevent sliding sideways.)

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

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

      3. Power steering ECU assembly

      		 During αB control, if the CAN communication data becomes invalid, control stops. The electronic power steering warning light (yellow) illuminates. U0129

      Steering Assist Calculation

      (Changes the assist force according to the vehicle speed.)

      1. Power steering ECU assembly

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

      3. -

      • 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).

      		 The electronic power steering warning light (yellow) illuminates. U0129

      Assist Start Judgment

      (Permits assist only when the engine is running or while driving the vehicle.)

      1. Power steering ECU assembly

      2. Hybrid vehicle control ECU, Brake booster with master cylinder assembly (skid control ECU)

      3. -

      • When communication is lost with hybrid vehicle 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.

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

      • When communication is lost with hybrid vehicle control ECU only: The EPS indicator (yellow) illuminates before assist starts. Once assist starts, there is no indication of a failure.

      • When communication is lost with skid control ECU only: The EPS indicator (yellow) illuminates.

      • When communication is lost with hybrid vehicle control ECU and skid control ECU: The EPS indicator (yellow) illuminates before assist starts. Once assist starts, there is no indication of a failure.

      • U0129

      • U0293

      DTC Output

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

      1. Combination meter assembly

      2. ECM, Power steering ECU assembly

      3. -

      		 Nothing Nothing -

      Assist Map Selection

      (Selects the assist map according to the destination information, drivetrain, engine type, etc.)

      1. Power steering ECU assembly

      2. Brake booster with master cylinder assembly (skid control ECU), ECM, Hybrid vehicle control ECU

      3. -

      • 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 electronic power steering warning light (yellow) illuminates because an assist map is not selected. -

      Idle Up

      (When a large assist current is created, a request to perform idle up is sent to the ECM in order to prevent the auxiliary battery voltage from dropping.)

      1. Hybrid vehicle control ECU

      2. Power steering ECU assembly

      3. -

      		 Nothing Nothing -

      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.)

      1. Combination meter assembly

      2. Power steering ECU assembly

      3. -

      		 Nothing Nothing -

      Steering Center Point Learning

      (Learns the steering wheel center point.)

      1. Power steering ECU assembly

      2. Brake booster with master cylinder assembly (skid control ECU), Spiral with cable sub-assembly (steering angle sensor)

      3. -

      		 The steering wheel center point is not learned if there is a problem with CAN communication. The electronic power steering warning light (yellow) illuminates. U0129

      Compensation Control

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

      1. Power steering ECU assembly

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

      3. -

      		 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). The electronic power steering warning light (yellow) illuminates. U0129

      Vehicle Speed Display


      • Displays the vehicle speed on the speedometer according to the vehicle speed signal from the skid control ECU.

      • Speed Warning Display/Buzzer

      1. Combination meter assembly

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

      3. -

      		 Signal is considered to be 0.

      • The speedometer displays 0 km/h (0 mph).

      • The drive monitor stops calculating.

      		 -

      Tachometer

      (Displays information on the tachometer.)

      1. Combination meter assembly

      2. ECM

      3. -

      		 Signal is considered to be 0.

      • The tachometer displays 0 rpm.

      • The drive monitor stops calculating.

      		 -

      Hybrid Vehicle Indicator

      (Operates the hybrid vehicle indicator.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be 0. The HV indicator turns off. U0100

      ECT/ENG System Display


      • Turns the temperature gauge command high engine coolant temperature warning display on and off.

      • Turns the high temperature warning buzzer on and off.

      1. Combination meter assembly

      2. ECM

      3. -

      		 Signal is considered to be 0. The needle of the engine coolant temperature gauge is at the C mark or below. -

      Fuel Gauge


      • Displays the fuel gauge fuel level.

      • Turns the remaining fuel amount warning on and off.

      1. Combination meter assembly

      2. Brake booster with master cylinder assembly (skid control ECU), ECM, Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be 0.

      • The fuel gauge displays the minimum value.

      • Calculation continues using a provisional value.

      • The drive monitor stops calculating.

      • U0100

      • U0129

      Odometer and trip meter display

      (Displays the driving distance.)

      1. Combination meter assembly

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

      3. -

      		 Signal is considered to be 0. The last displayed value remains. U0129

      Shift Display

      (Displays the shift position.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be 0. Not displayed -

      Airbag

      (Turns the SRS warning light on and off.)

      1. Combination meter assembly

      2. Airbag ECU assembly

      3. -

      		 Signal is considered to be "Active". The airbag warning light illuminates. U0151

      Seat Belt Warning


      • Turns the seat belt warning light on and off.

      • Turns the seat belt warning buzzer on and off.

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU), Airbag ECU assembly

      3. -

      		 Signal is considered to be 0. The seat belt warning light turns off. U0151

      ABS Warning

      (Turns the ABS warning light on and off.)

      1. Combination meter assembly

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

      3. -

      		 Signal is considered to be "Active". The ABS warning light illuminates. U0129

      Brake Warning


      • Turns the brake warning light on and off.

      • Turns the brake system buzzer on and off.

      • Turns the brake fluid warning light on and off.

      • Turns the brake fluid warning buzzer on and off.

      1. Combination meter assembly

      2. Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU)

      3. -

      • Signal is considered to be "Active".

      • While the power switch is on (IG), the current state is maintained.

      		 The brake warning light illuminates. U0129

      Electronically Controlled Brake Warning

      (Turns the electronically controlled brake warning light on and off.)

      1. Combination meter assembly

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

      3. -

      		 Signal is considered to be "Active". The electronically controlled brake warning light illuminates. U0129

      Brake Override System

      (Turns the brake override system light on and off.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be "Active". The brake override system light illuminates. -

      SLIP Warning

      (Turns the SLIP warning light on and off.)

      1. Combination meter assembly

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

      3. -

      • Signal is considered to be "Active".

      • While the power switch is on (IG), the current state is maintained.

      		 The SLIP indicator illuminates. U0129

      TRC OFF

      (Turns the TRC OFF light on and off.)

      1. Combination meter assembly

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

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing U0129

      Electronic Power Steering Warning


      • Turns the electronic power steering warning light on and off.

      • Turns the electronic power steering warning buzzer on and off.

      • Turns the electronic power steering multi-information display on and off.

      1. Combination meter assembly

      2. Power steering ECU assembly

      3. -

      		 Signal is considered to be "Active". The electronic power steering warning light illuminates. U0131

      Headlight System

      (Turns operation and warning lights on/off.)

      1. Combination meter assembly

      2. Main Body ECU (Multiplex Network Body ECU), Headlight light control ECU sub-assembly LH

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing U0182

      Light Reminder

      (Turns the warning buzzer on and off.)

      1. Combination meter assembly

      2. Main Body ECU (Multiplex Network Body ECU)

      3. -

      		 Signal is considered to be 0. Nothing -

      Entry and Start System-related


      • Turns the buzzer on and off.

      • Turns the light on and off.

      • Turns the multi-information display on and off.

      1. Combination meter assembly

      2. Certification ECU (smart key ECU assembly)

      3. -

      		 Signal is considered to be 0. Nothing -

      Intrusion Sensor

      (Displays the operation status.)

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Ajar Warning


      • Turns the warning buzzer on and off.

      • Turns the warning light on and off.

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Window/Roof Open Warning


      • Turns the buzzer on and off.

      • Turns the multi-information display on and off.

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Destination

      (Determines the destination, etc.)

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Processes as invalid data. Nothing U0142

      MIL


      • Turns the MIL on and off.

      • Turns the coolant temperature warning buzzer on and off.

      1. Combination meter assembly

      2. ECM

      3. -

      • Signal is considered to be "Active".

      • Signal is considered to be 0.

      		 The MIL illuminates. U0100

      Oil Pressure


      • Turns the warning light on and off.

      • Turns the buzzer on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Ignores signal using mask condition and performs control using only sensor information. Nothing -

      Oil Level


      • Turns the warning light on and off.

      • Turns the buzzer on and off.

      1. Combination meter assembly

      2. ECM

      3. -

      		 Ignores signal used for the mask conditions and performs control using only sensor information. Nothing -

      Oil Maintenance

      (Turns the operation and warning display on and off.)

      1. Combination meter assembly

      2. ECM

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Injector Maintenance

      (Turns the operation and warning display on and off.)

      1. Combination meter assembly

      2. ECM

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Battery Warning

      (Turns the battery light on and off.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Electrical Component Operation Limit

      (Turns the warning display on and off.)

      1. Combination meter assembly

      2. Air conditioning amplifier assembly

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      READY


      • Turns the READY light on and off.

      • Turns the READY buzzer on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Actual EV Running

      (Turns the actual EV running light on and off.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be 0. Nothing -

      The Hybrid Vehicle System Malfunctions


      • Turns the warning light on and off.

      • Turns the warning buzzer on and off.

      • Turns the maintenance and certification mode display on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Hybrid Vehicle Unit Overheat


      • Turns the warning light on and off.

      • Turns the warning buzzer on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Hybrid Vehicle Coolant System Maintenance Request

      (Turns the maintenance request display on and off.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Towing Prohibited


      • Turns the warning display on and off.

      • Turns the warning buzzer on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      Accelerator Depressed in N


      • Turns the warning display on and off.

      • Turns the warning buzzer on and off.

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing -

      TPMS

      (Warning Light)(Turns the tire pressure warning light on and off.)

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Signal is considered to be "Active". The TPMS warning light illuminates. U0142

      TPMS

      (Multi-display)(Displays the pressure in the multi-display.)

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Signal is considered to be 0. The pressure value display turns off. U0142

      Cruise Control

      (Turns the cruise control/radar cruise control operation and warning display on and off.)

      1. Combination meter assembly

      2. Driving support ECU assembly, Hybrid vehicle control ECU

      3. -

      		 Signal is considered to be 0.

      • The operation light turns off.

      • The radar cruise control operation display turns off.

      		 -

      Pre-crash Safety System

      (Turns the pre-crash safety light on and off.)

      1. Combination meter assembly

      2. Driving support ECU assembly

      3. -

      		 Signal is considered to be "Active". The pre-crash safety indicator flashes. U1104

      Lane Departure Alert System

      (Turns the lane departure alert light on and off.)

      1. Combination meter assembly

      2. Lane departure warning camera

      3. -

      		 Signal is considered to be "Active". The lane departure alert light illuminates. U023A

      Blind Spot Monitor System

      (Turns the blind spot monitor indicator on and off.)

      1. Combination meter assembly

      2. Blind spot monitor sensor LH

      3. -

      		 While the power switch is on (IG), the current state is maintained. During operation, the indicator on the mirror surface and status mismatch. -

      Clearance Sonar


      • Turns the clearance sonar light on and off.

      • Turns the clearance sonar display on and off.

      1. Combination meter assembly

      2. Clearance warning ECU assembly

      3. -

      		 Signal is considered to be 0.

      • The clearance sonar light turns off.

      • The clearance sonar display turns off.

      		 -

      Multi-media-linked

      (Navigation, audio, telephone, etc.)

      1. Combination meter assembly

      2. Radio receiver assembly

      3. -

      		 While the power switch is on (IG), the current state is maintained. Nothing U0163

      Steering Angle Sensor

      (Detects the vehicle steering angle.)

      1. Spiral with sensor cable sub-assembly (steering angle sensor)

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

      3. -

      		 The steering angle sensor information signal is sent at regular intervals every 0.12 seconds. Nothing -

      Anti-lock Brake System Control

      (Prevents the wheels from locking during sudden stops.)

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

      2. Airbag ECU assembly

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

      • During control: After ending backup control (stabilizing the vehicle), the system changes to normal braking and prohibits control.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The anti-lock brake system indicator illuminates.

      • The SLIP indicator illuminates.

      • The brake hold operation light illuminates.

      • The brake hold standby light illuminates.

      • U0073

      • U0123

      • U0124

      Vehicle Stability Control/Traction Control

      (Suppresses vehicle instability, such as sliding sideways when cornering and wheel slippage when accelerating from rest.)

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

      2. Hybrid vehicle control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Airbag ECU assembly

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

      • During control: After ending backup control (stabilizing the vehicle), the system changes to normal braking and prohibits control.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The anti-lock brake system indicator illuminates.

      • The SLIP indicator illuminates.

      • The brake hold operation light illuminates.

      • The brake hold standby light illuminates.

      • U0073

      • U0123

      • U0124

      • U0126

      • U0293

      Hill-start Assist Control 3

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

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

      2. Hybrid vehicle control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Airbag ECU assembly

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

      • During control: After ending backup control (pressure reduction control), the system changes to normal braking and prohibits control, or control continues, and after normal control finishes, prohibits control.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The anti-lock brake system indicator illuminates.

      • The SLIP indicator illuminates.

      • The brake hold operation light illuminates.

      • The brake hold standby light illuminates.

      • U0073

      • U0123

      • U0124

      • U0126

      • U0293

      Hybrid Vehicle Regenerative Brake Coordinated Control

      (Performs regenerative brake coordinated control with the hybrid vehicle system.)

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

      2. Hybrid vehicle control ECU, Airbag ECU assembly

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

      • During control: After ending backup control (pressure reduction control), the system changes to normal braking and prohibits control, or control continues, and after normal control finishes, prohibits control.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The anti-lock brake system indicator illuminates.

      • The SLIP indicator illuminates.

      • The brake hold operation light illuminates.

      • The electronically controlled brake warning light illuminates.

      • U0073

      • U0120

      • U0123

      • U0124

      • U0293

      Brake Hold Control

      (Maintains the brake oil pressure when the vehicle is stopped.)

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

      2. Parking brake actuator with bracket assembly

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

      • During control: When brake oil pressure is applied, if the brake pedal is depressed after "Depress the brake pedal" is displayed on the multi-information display, brake hold control is prohibited.

      • Not during control: Control cannot start.

      • The anti-lock brake system indicator illuminates.

      • The SLIP indicator illuminates.

      • The brake hold operation light illuminates.

      • The brake hold standby light illuminates.

      • U0073

      • U0123

      • U0124

      • U0126

      • U0293

      AVS

      (Controls the variable damping force according to the vehicle state.)

      1. Absorber control ECU

      2. Hybrid vehicle control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Airbag ECU assembly, Radio receiver assembly

      3. Absorber control ECU

      • System assumes READY ON and control continues except for anti-squat control.

      • Control continues (damping force control).

      • Not during emergency steering control: Damping force set to fail-safe level and control continues except for roll control and navigation coordinated control.

      • During emergency steering control: Control performed with damping force set to emergency level.

      • Control continues except for roll control.

      • Control continues except for navigation coordinated control.

      		 Nothing

      • U0101

      • U0122

      • U0124

      • U0126

      • U0293

      Static Parking Brake

      (Controls EPB* lock and release.)

      1. Parking brake ECU assembly

      2. Brake booster with master cylinder assembly (skid control ECU), Airbag ECU assembly

      3. -

      		 During an acceleration sensor communication malfunction, the EPB* maintains the vehicle in a stopped position with the maximum possible braking force. The EPB* light illuminates. U0124

      Dynamic Parking Brake

      (When the vehicle is in motion, stops the vehicle according to EPB* control.)

      1. Parking brake ECU assembly

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

      3. -

      		 During a 4 wheel speed sensor malfunction, the dynamic parking brake function does not operate. The EPB* light illuminates. U0129

      Shift-linked Control

      (When the shift lever is moved to P, the parking brake operates. If the shift lever is moved to a position other than P, the parking brake is released.)

      1. Parking brake ECU assembly

      2. Hybrid vehicle control ECU

      3. -

      		 When there is a shift information communication malfunction, the shift-linked function is released and the EPB* can only be operated via the switch. The EPB* light illuminates. U0100

      Panoramic View Monitor


      • Shows an overhead map along with front, side and rear images on the display.

      • Shows guide lines on the displayed image in tandem with the steering angle.

      • Displays the clearance sonar detection area.

      1. Parking assist ECU

      2. Hybrid vehicle control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Clearance warning ECU assembly

      3. -

      • The screen continues to display when displaying the panoramic view screen.

      • The estimated course lines are cleared.

      • The clearance sonar detection image is cleared.

      • The panoramic view monitor system does not operate.

      • "Guidance unavailable" message is displayed on the multi-display.

      • The clearance sonar function stop mark is displayed on the vehicle icon.

      • U0073

      • U0100

      • U0126

      • U0129

      • U0140

      • U1000

      • U1110

      Air Conditioning Control

      (Controls the selecting of the registers, temperature adjustment, etc. according to remote touch operation.)

      1. Radio receiver assembly

      2. Air conditioning amplifier assembly

      3. Air conditioning amplifier assembly

      • The air conditioning related indicators are turned off.

      • If the set air temperature is displayed on an external display device, the system clears the set air temperature display.

      • Disables the functions used to operate the air conditioning system.

      		 Displays messages on the multi-information display.

      • U0073

      • U0164

      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.)

      1. Radio receiver assembly

      2. ECM, Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      • 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 "LEXUS Park Assist" 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).

      • U0073

      • U0100

      • U1110

      Eco Navigation Display

      (Displays the fuel consumption in 1 minute intervals, and displays the average fuel consumption history.)

      1. Radio receiver assembly

      2. ECM, Combination meter assembly, Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control ECU

      3. -

      • Stops updating the fuel consumption displayed in 1 minute intervals on the Eco navigation (Eco drive) display (the graph of fuel consumption in 1 minute intervals that was displayed up until the point of the malfunction is not cleared).

      • Stops updating the average fuel consumption history on the Eco navigation (Eco drive) display.

      • If the distance to empty is displayed on the Eco navigation (Eco drive) display, the numbers of the display indicating the distance to empty are cleared because distance to empty data is lost.

      • The 1 minute fuel consumption graph on the Eco navigation (Eco drive) display is not updated for 1 minute or more.

      • The most recent value for the fuel consumption interval graph on the Eco navigation (Eco drive) screen is cleared.

      • The numbers of the distance to empty displayed on the fuel consumption screen of the Eco navigation (Eco drive) display are cleared.

      • U0100

      • U0129

      • U0155

      • U0293

      Hybrid Vehicle Energy Flow Display

      (Displays the energy flow which indicates the transmission of power and power regeneration state.)

      1. Radio receiver assembly

      2. Hybrid vehicle control ECU

      3. -

      		 If a communication stop occurs while the energy flow screen is being displayed, the energy flow display is cleared and the last value used for the remaining battery amount is maintained. The flow display of the energy flow screen is cleared. U0293

      Parking Assist Monitor Control

      (Displays the rear view monitor based on information from the steering sensor, the vehicle speed, and the vehicle information [2WD/AWD determination information, etc.].)

      1. Radio receiver assembly

      2. ECM, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Hybrid vehicle control ECU

      3. -

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

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

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

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

      • U0100

      • U0126

      • U0129

      • U0140

      Destination Determination

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

      1. Radio receiver assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 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

      Vehicle Customize Function

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

      1. Radio receiver assembly

      2. Air conditioning amplifier assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU), Multiplex tilt and telescopic ECU, Front power seat switch LH

      3. -

      • 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, TAT, PPW, RRW and RLW ECU are not displayed or the settings cannot be saved.

      • U0073

      • B15F5

      • B15F6

      • B15F7

      • B15F8

      HUD Display Function

      (Displays the navigation intersection guide information on the meter or HUD device.)

      1. Combination meter assembly

      2. Radio receiver assembly

      3. -

      		 Nothing Nothing U0073

      ESPO

      (Displays the level of "Eco" driving.)

      1. Radio receiver assembly

      2. Air conditioning amplifier assembly, ECM, Spiral with sensor cable sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Airbag ECU assembly

      3. -

      		 Vehicle distance function and fuel consumption function are stopped and the output information for that trip is discarded. Nothing -

      Time Stamp Function

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

      1. Main body ECU (multiplex network body ECU)

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Nothing Nothing

      • U0073

      • U0140

      Rear View Monitor Control

      (Displays the rear view of the vehicle.)

      1. Radio receiver assembly

      2. Hybrid vehicle control ECU, Main body ECU (multiplex network body ECU)

      3. -

      		 Nothing Cannot switch to the camera screen. U0100

      Remote Service Function

      (Corresponds with the service center via DCM to switch to the warning screen, remote immobiliser screen and remote service user screen, and sends customer operation information.)

      1. Radio receiver assembly

      2. Telematics transceiver

      3. -

      		 The remote screen is turned off. The remote screen does not display. U0198

      Meter-linked Function

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

      1. Radio receiver assembly

      2. Combination meter assembly

      3. -

      		 Maintains the last valid state. Nothing -

      Entry and Start Function


      • Entry lock/unlock and back door unlatch

      • Entry and start warnings

      • Entry illumination (dome light illumination, etc.)

      • Engine start possible display

      1. Main body ECU (multiplex network body ECU), Certification ECU (smart key ECU assembly)

      2. Main body ECU (multiplex network body ECU), Certification ECU (smart key ECU assembly)

      3. Main body ECU (multiplex network body ECU), Combination meter assembly

      		 A entry unlock retry is performed.

      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 power switch on (READY) possible display, and the key lock-in prevention function do not operate.

      • 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

      Entry and Start Function


      • Entry lock/unlock and back door unlatch

      • Entry and start warnings

      • Entry illumination (dome light illumination, etc.)

      • Engine start possible display

      1. Certification ECU (smart key ECU assembly)

      2. ECM

      3. Combination meter assembly

      		 The previous value is maintained. Incorrect entry and start warnings are output. U0100

      Wireless Function

      (Operates the wireless lock/unlock functions, etc.)

      1. Main body ECU (multiplex network body ECU)

      2. Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU)

      3. Main body ECU (multiplex network body ECU)

      		 Nothing

      • Wireless lock/unlock and trunk functions do not operate.

      • When the power switch is on (IG), the wireless lock/unlock/back open functions do not operate.

      		 U0142

      Remote Engine Start Function

      (Requests for the immobiliser to be unset in response to data from the remote engine start ECU.)

      1. Bus buffer ECU

      2. Certification ECU (smart key ECU assembly), Bus buffer ECU

      3. ECM

      		 Nothing The remote engine start does not operate. -

      Memory Function

      (Moves the seat and steering wheel to the recorded positions when a entry unlock or wireless unlock operation is performed.)

      1. Main body ECU (multiplex network body ECU)

      2. Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU)

      3. Multiplex tilt and telescopic ECU, Front power seat switch LH

      		 Nothing

      • The memory recall function does not operate.

      • The memory key registration does not operate.

      		 U0142

      Power Switch Lettering Illumination Control

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

      1. Certification ECU (smart key ECU assembly)

      2. Combination meter assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU)

      3. Certification ECU (smart key ECU 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

      Security Indicator Display Function

      (Displays the immobiliser security condition.)

      1. Certification ECU (smart key ECU assembly)

      2. Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU)

      3. Certification ECU (smart key ECU assembly)

      		 Nothing Security condition cannot display normally (illuminates during security warning preparation/security warning). U0142

      Security Indicator Display Function

      (Displays the immobiliser security condition.)

      1. Certification ECU (smart key ECU assembly)

      2. Hybrid vehicle control ECU

      3. Combination meter assembly

      		 Nothing

      The entry and start warnings do not operate properly.


      • The timing for stopping the engine start operation method display when starting the engine is delayed.

      • The smart key portable device low battery warning does not operate when starting the engine.

      		 U0293

      Electronic Power Switch Control

      (Changes the power switch mode and sends starter drive requests according to engine start switch operation.)

      1. Certification ECU (smart key ECU assembly)

      2. Main body ECU (multiplex network body ECU), Brake booster with master cylinder assembly (skid control ECU), ECM, Combination meter assembly, Bus buffer ECU, Hybrid vehicle control ECU

      3. -

      		 Nothing

      • Guidance cannot be displayed.

      • Preheater does not operate.

      • When the power switch is off, the entry and start system with push button start telltale blinks red according to a "vehicle information malfunction" judgment.

      • Remote engine starter does not operate.

      • U0140

      • U0155

      • U0293

      • U1117

      Door Lock

      (Operates the lock and unlock functions [the key-linked function, key lock-in prevention function, automatic lock function, etc.].)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Combination meter assembly, Airbag ECU assembly, Hybrid vehicle control ECU

      3. Main body ECU (multiplex network body ECU)

      • 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.

      		 Nothing

      • U0100

      • U0101

      • U0151

      • U0155

      Alarm

      (Sounds various warnings.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Multiplex network door ECU, Certification ECU (smart key ECU assembly), Hybrid vehicle control ECU

      3. Main body ECU (multiplex network body ECU)

      		 Nothing Nothing

      • U0100

      • U0120

      • U0230

      • U0293

      Automatic Dimming of Display

      (Controls display dimming control.)

      1. Main body ECU (multiplex network body ECU)

      2. Combination meter assembly

      3. Main body ECU (multiplex network body ECU)

      		 Automatically performs display dimming control when tail mode is not canceled (when the light sensor illuminance signal value is less than the display dimming value, the interior displays and indicators are dimmed). Nothing U0155

      Illumination

      (Performs illumination control.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Certification ECU (smart key ECU assembly)

      3. Main body ECU (multiplex network body ECU)

      • The dome light turns off.

      • The outside handle illumination turns off.

      • The foot light is adjusted.

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

      • U0101

      • U0327

      Equipment Related

      (Controls gateway between the BERKES equipment and CAN.)

      1. Bus buffer ECU

      2. ECM, Certification ECU (smart key ECU assembly), Air conditioning amplifier assembly

      3. Air conditioning amplifier assembly

      		 Sends an initial communication value to the BERKES equipment. Remote engine starter function does not operate.

      • U0100

      • U0101

      • U0120

      • U0155

      • U0164

      • U0293

      • U0327

      Remote Service

      (Controls the remote function [receives remote service command requests].)

      1. Main body ECU (multiplex network body ECU)

      2. Telematics transceiver

      3. Main body ECU (multiplex network body ECU)

      		 Nothing Nothing U1116

      Seat and Mirror Control

      (Controls the memory function [the seat, steering wheel and mirror position adjustments].)

      1. Main body ECU (multiplex network body ECU)

      2. Combination meter assembly, Certification ECU (smart key ECU assembly), Multiplex tilt and telescopic ECU, Front power seat switch LH, Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH, Parking brake ECU assembly

      3. Multiplex tilt and telescopic ECU, Front power seat switch LH, Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      • 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.

      		 Nothing

      • U0120

      • U0155

      • U0199

      • U0200

      • U0208

      • U0327

      • U1106

      • U1115

      Diagnostic/C-BEST

      (Diagnostic phase 4 communication.)

      1. -

      2. All ECUs connected to CAN

      3. Main body ECU (multiplex network body ECU)

      		 Exits diagnostic mode. Nothing -

      Entry and Start/Wireless

      (Controls entry and start/wireless functions.)

      1. Certification ECU (smart key ECU assembly)

      2. Certification ECU (smart key ECU assembly)

      3. Main body ECU (multiplex network body ECU)

      		 Entry lock/unlock control not possible. Nothing U0327

      Back Door Opener

      (Performs back door opener control and power back door one motion open control.)

      1. Main body ECU (multiplex network body ECU)

      2. Combination meter assembly, Multiplex network door ECU

      3. Main body ECU (multiplex network body ECU)

      • Back door opener control is prohibited.

      • The back door operation start answer back (hazard warning light/buzzer) does not operate.

      • The one motion power back door does not operate.

      		 Nothing

      • U0155

      • U0230

      TPMS

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

      1. Main body ECU (multiplex network body ECU)

      2. Combination meter assembly

      3. 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

      Light Control (Light ECU)

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

      1. Headlight light control ECU sub-assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Headlight light control ECU sub-assembly LH

      		 Nothing Nothing U0182

      Equipment Related

      (Controls accessory remote starter and alarms.)

      1. Main body ECU (multiplex network body ECU)

      2. Bus buffer ECU

      3. Main body ECU (multiplex network body ECU)

      • Maintains remote starter status until the ignition power supply is turned off.

      • During warnings, stops warning load output.

      • Remote engine starter function does not operate.

      • The alarm function does not operate.

      		 U1117

      Rear Power Seat Driving Status Output Control

      (Outputs the driving status to the rear power seat ECU [operations prohibited while driving].)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Combination meter assembly, Parking brake ECU assembly

      3. -

      • Outputs "Driving Status OFF".

      • Outputs "Driving Status ON".

      		 Nothing

      • U0100

      • U0101

      • U0155

      • U1106

      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.

      1. Multiplex tilt and telescopic ECU

      2. Combination meter assembly, Main body ECU (multiplex network body ECU), Front power seat switch LH

      3. -

      		 Nothing The memory, recall, auto-return, auto-away and manual functions do not operate.

      • U0142

      • U0208

      • B2624

      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).

      • Controls the tilt and telescopic functions together with seat control.

      1. Front power seat switch LH

      2. ECM, Combination meter assembly, Main body ECU (multiplex network body ECU), Multiplex tilt and telescopic ECU, Certification ECU (smart key ECU assembly)

      3. -

      • The memory system, memory call and return away functions do not operate.

      • The tilt and telescopic-linked function does not operate.

      • The memory system, memory call and return away functions do not operate.

      • The tilt and telescopic-linked function does not operate.

      		 -

      Light Control

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

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      		 The mirror puddle lights do not operate. The mirror puddle lights do not operate. U0142

      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.)

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      		 The mirrors do not operate manually. The mirrors do not operate manually. U0142

      Mirror Heater Control

      (Controls the operation of the outer mirror heaters based on defogger switch information from the air conditioning amplifier assembly, etc.)

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Air conditioning amplifier assembly, Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      		 The mirror heaters do not operate. The mirror heaters do not operate. U0142

      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.)

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      		 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].)

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      		 The reverse shift-linked function does not operate. The reverse shift-linked function does not operate. U0142

      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].)

      1. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      • 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.

      		 U0142

      Memory Switch Signal Substitute Transmission

      (Sends the memory switch signal via CAN communication.)

      1. Main body ECU (multiplex network body ECU)

      2. Outer mirror control ECU assembly RH, Outer mirror control ECU assembly LH

      3. Main body ECU (multiplex network body ECU)

      		 Nothing The seat and mirror position memorization and recall functions do not operate. -

      Power Back Door Open/Close Function


      • Automatically opens the back door according to the operation conditions (power source mode, shift position, vehicle speed, lock position) and switch operation (driver seat/wireless).

      • Automatically closes the back door according to switch operation (driver seat/wireless/back door).

      1. Multiplex network door ECU

      2. ECM, Combination meter assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU), Bus buffer ECU

      3. -

      • Automatic opening and closing does not operate.

      • Cannot reverse operation during automatic operation.

      • The automatic opening and closing operations cannot be stopped.

      • Does not perform the automatic open and close operation.

      • The wireless one motion function does not operate.

      • Stopping the automatic open or closing operation is not possible.

      		 -

      Wireless One Motion Function

      (If a wireless switch operation is performed with the doors locked, the back door is automatically opened.)

      1. Multiplex network door ECU

      2. ECM, Combination meter assembly, Main body ECU (multiplex network body ECU), Bus buffer ECU

      3. -

      		 The wireless one motion function does not operate. The wireless one motion function does not operate. -

      Back Door Opener Function

      (Opens the back door according to operation conditions (power source mode, vehicle speed, lock position) and the back door handle switch.)

      1. Multiplex network door ECU

      2. Combination meter assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU), Bus buffer ECU

      3. -

      		 The back door opener does not operate. The back door opener does not operate. -

      Back Door Closer Function

      (Completely closes the back door when it is ajar.)

      1. Multiplex network door ECU

      2. Combination meter assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU), Bus buffer ECU

      3. -

      		 The function cannot reverse operation during the closer operation. The function cannot reverse operation during the closer operation. -

      Courtesy Switch Signal Substitution Output Function

      (Sends a back door/luggage courtesy switch signal through the CAN bus.)

      1. Multiplex network door ECU

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Nothing When the back door/luggage compartment door is open, the indicator does not illuminate. -

      Lock Permission Signal Output Function during Power Back Door Closing Operation

      (Sends a power back door closing operation signal to the CAN bus in order to allow a wireless door lock during the power back door closing operation.)

      1. Multiplex network door ECU

      2. Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU)

      3. -

      		 Nothing Disallows the wireless lock during the power back door closing operation. -

      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.)

      1. Headlight light control ECU sub-assembly LH

      2. Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU)

      3. -

      		 Leveling control stops (beam axis position is stopped at position when malfunction was detected). Nothing

      • U0129

      • U0142

      Leveling Indicator

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

      1. Headlight light control ECU sub-assembly LH

      2. Combination meter assembly

      3. Headlight light control ECU sub-assembly LH

      		 Maintains the leveling indicator state. Nothing -

      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.

      1. Headlight light control ECU sub-assembly LH

      2. ECM, Main body ECU (multiplex network body ECU)

      3. Headlight light control ECU sub-assembly LH

      		 Nothing Nothing

      • U0100

      • U0142

      Cornering Light

      (Turns the cornering light on and off according to the wheel speed, turn, steering angle and shift position data.)

      1. Headlight light control ECU sub-assembly LH

      2. ECM, Brake booster with master cylinder assembly (skid control ECU), Combination meter assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Main body ECU (multiplex network body ECU)

      3. Headlight light control ECU sub-assembly LH

      		 Stops cornering light control (cornering light turns off). Nothing

      • U0101

      • U0126

      • U0129

      • U0142

      • U0155

      Low Beam, High Beam, DRL (Domestic Default), Clearance, Side Marker (OPT)

      (Turns the specified light source on and off according to low beam, high beam, DRL [domestic default], clearance light and side marker light command data.)

      1. Main body ECU (multiplex network body ECU)

      2. Headlight light control ECU sub-assembly LH

      3. Headlight light control ECU sub-assembly LH

      		 Forces the low beams, clearance lights and side marker lights to illuminate. Nothing U0142

      LED Headlight Indicator

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

      1. Headlight light control ECU sub-assembly LH

      2. Headlight light control ECU sub-assembly LH

      3. Combination meter assembly

      		 Maintains the LED headlight indicator status. Nothing -

      Headlight Cleaner Signal Output

      (Outputs the headlight cleaner relay ON signal based on the direct line front washer switch signals, headlight cleaner switch signals, low beam illumination command from the main body ECU [multiplex network body ECU] and IG data.)

      1. Headlight light control ECU sub-assembly LH

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Stops headlight cleaner operation. Nothing U0142

      Dynamic Radar Cruise Control

      (Accelerates or decelerates the vehicle to maintain the distance to the vehicle ahead.)

      1. Driving support ECU assembly

      2. Hybrid vehicle control ECU, Combination meter assembly, Spiral with cable sensor sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Airbag ECU assembly

      3. ECM, Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control 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

      • U0129

      • U0293

      Pre-crash Safety

      (Controls brakes immediately before a collision.)

      1. Driving support ECU assembly

      2. ECM, Combination meter assembly, Spiral with cable sensor sub-assembly (steering angle sensor), Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Airbag ECU assembly

      3. ECM, Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control ECU

      		 Pre-crash control is stopped. Pre-crash safety indicator blinks and warning message displays (pre-crash safety cancel switch is off).

      • U0125

      • U0126

      • U0129

      • U0142

      • U0293

      Clearance Sonar Customize

      (Changes the clearance sonar settings when the user operates the display.)

      1. Clearance warning ECU assembly

      2. Radio receiver assembly, Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      		 Nothing Nothing -

      Shift Position Judgment

      (Receives shift position data which it uses for the clearance sonar detection operation conditions.)

      1. Clearance warning ECU assembly

      2. ECM, Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      		 Changes to an operation state which is used when the shift lever is in P. Nothing U0101

      Vehicle Speed Determination

      (Receives vehicle speed data which it uses for the clearance sonar detection operation conditions.)

      1. Clearance warning ECU assembly

      2. Combination meter assembly, Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      		 Changes to an operation state which is used when the vehicle speed is 20 km/h or higher. Nothing U0155

      Voice Warning Availability Confirmation

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

      1. Clearance warning ECU assembly

      2. Main body ECU (multiplex network body ECU), Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      		 There is no voice warning. Nothing -

      Vehicle Local Time Synchronization

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

      1. Clearance warning ECU assembly

      2. Main body ECU (multiplex network body ECU), Clearance warning ECU assembly

      3. Clearance warning ECU assembly

      		 Continues an independent count. Nothing -

      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.)

      1. Combination meter assembly

      2. Hybrid vehicle control ECU

      3. Airbag ECU assembly

      		 If the TC signal is lost during TC service (TC = ON), the TC is determined to be OFF and TC service ends. Nothing -

      Timestamp

      (Records DTCs and timestamps received from the main body ECU.)

      1. Airbag ECU assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Changes to a separate count inside the ECU and sets separate count recognition information when it receives a fail value or communication stops. Nothing -

      Collision Detection Signal

      (Notifies the system of a collision in order to perform fuel cut when a vehicle collision occurs.)

      1. Hybrid vehicle control ECU

      2. Airbag ECU assembly

      3. -

      		 Nothing Nothing -

      Airbag Warning Light Control

      (Sends airbag warning light illumination information.)

      1. Combination meter assembly

      2. Airbag ECU assembly

      3. -

      		 Nothing Nothing -

      Seat Belt Warning Control

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

      1. Combination meter assembly, Main body ECU (multiplex network body ECU)

      2. Airbag ECU assembly

      3. -

      		 Nothing Nothing -

      Trigger Signal/Autonomous Transmission

      (Outputs the yaw rate sensor signal.)

      1. Airbag ECU assembly

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

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

      		 The yaw rate sensor information signal is sent at regular intervals every 0.012 seconds. Nothing -

      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.)

      1. Airbag ECU assembly

      2. ECM, Brake booster with master cylinder assembly (skid control ECU), Driving support ECU assembly, Spiral with cable sensor sub-assembly (steering angle sensor), Hybrid vehicle control ECU, Airbag ECU assembly

      3. -

      • An invalid value is recorded in the EDR.

      • Maintains previous values.

      		 Nothing -

      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.)

      1. Airbag ECU assembly

      2. ECM, Main body ECU (multiplex network body ECU), Brake booster with master cylinder assembly (skid control ECU), Power steering ECU assembly, Spiral with cable sensor sub-assembly (steering angle sensor), Combination meter assembly, Driving support ECU assembly, Airbag ECU assembly, Hybrid vehicle control ECU, Lane departure warning camera

      3. -

      • An invalid value is recorded in the DDR.

      • Maintains previous values.

      		 Nothing -

      Hybrid System Start 1

      (Requests to release the immobiliser according to bidirectional communication with the certification ECU (smart key ECU assembly).)

      1. Bus buffer ECU

      2. Certification ECU (smart key ECU assembly)

      3. Bus buffer ECU

      		 Hybrid system starting control is not possible. Cannot start engine with remote start. -

      Hybrid System Start 2

      (Requests to turn the ACC and IG power supply on and off.)

      1. Bus buffer ECU

      2. Certification ECU (smart key ECU assembly)

      3. Bus buffer ECU

      		 Hybrid system starting control is not possible. Cannot start engine with remote start. -

      Vehicle Registration

      (Requests to register the remote starter according to bidirectional communication with the certification ECU (smart key ECU assembly).)

      1. Bus buffer ECU

      2. Certification ECU (smart key ECU assembly)

      3. Bus buffer ECU

      		 Vehicle registration via the remote starter is not possible. No answer-back when registration with vehicle completes. -

      Air Conditioning Control

      (Requests automatic air conditioning and defogger control.)

      1. Bus buffer ECU

      2. Air conditioning amplifier assembly

      3. Bus buffer ECU

      		 During remote starter control, air conditioning control is not possible. During remote start control, air conditioning control is not performed. -

      Gateway System

      (Monitors the data relay between the V bus and sub bus 11, and the ECU connected to sub bus 11.)

      1. Hybrid vehicle control ECU

      2. Clearance warning ECU assembly, Driving support ECU assembly, Parking assist ECU, Lane departure warning camera, Blind spot monitor sensor LH, Absorber control ECU

      3. -

      		 The communication software, which includes information on the gateway, and the CAN controller are reset, and the frames collected in the gateway are discarded. Nothing

      • U0104

      • U0132

      • U0233

      • U023A

      • U023B

      • U1002

      • U1110

      Lane Departure Warning

      (Warns the user when the vehicle deviates from its lane.)

      1. Lane departure warning camera

      2. Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control ECU, Main body ECU (multiplex network body ECU), Combination meter assembly, Driving support ECU assembly, Airbag ECU assembly

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

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

      • U0101

      • U0104

      • U0123

      • U0129

      • U0142

      • U0155

      AHB

      (Controls high beams.)

      1. Lane departure warning camera

      2. Brake booster with master cylinder assembly (skid control ECU), Hybrid vehicle control ECU, Main body ECU (multiplex network body ECU), Airbag ECU assembly

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

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

      • U0101

      • U0123

      • U0129

      • U0142

      LDA (with Steering Control)

      (Performs torque control when the vehicle deviates from its lane.)

      1. Lane departure warning camera

      2. Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Combination meter assembly, Driving support ECU assembly, Power steering ECU assembly, Spiral with cable sensor sub-assembly (steering angle sensor), Airbag ECU assembly, Hybrid vehicle control ECU

      3. Brake booster with master cylinder assembly (skid control ECU), Power steering ECU assembly, Spiral with cable sensor sub-assembly (steering angle sensor)

      • Stops control, and immediately stops steering assistance.

      • Immediately stops buzzer output.

      • The multi-display illuminates thin lines.

      • Illuminates the steering assistance unusable text display.

      • A malfunction message is displayed.

      • U0101

      • U0104

      • U0123

      • U0126

      • U0129

      • U0131

      • U0142

      • U0155

      • U0293

      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.)

      1. Blind spot monitor sensor LH

      2. Hybrid vehicle control ECU, Brake booster with master cylinder assembly (skid control ECU), Main body ECU (multiplex network body ECU), Spiral with cable sensor sub-assembly (steering angle sensor)

      3. Blind spot monitor sensor LH

      		 Maintains previous values.

      • The BSM telltale illuminates.

      • "BSM failure. Take your car to a dealer." is displayed on the multi-information display.

      • U0126

      • U0129

      • U0142

      • U0293

      ASC

      (Outputs driving noise according to the input status of the vehicle.)

      1. Stereo component equalizer assembly

      2. Hybrid vehicle control ECU, Main body ECU (multiplex network body ECU), Brake booster with master cylinder assembly (skid control ECU)

      3. Stereo component equalizer assembly

      When transmission is lost:


      • Clears requests to send inside the SSD ECU.

      When there is a reception stop:


      • When CAN communication from the sending node malfunctions, control continues.

      		 Nothing

      • U0129

      • U0142

      • U0293

      Warning Notification

      (Sends information that the indicators in the meter are turned on to the service center, informs of malfunctions and is used when the vehicle should be taken to the dealership.)

      1. Telematics transceiver

      2. Combination meter assembly

      3. Radio receiver assembly, Combination meter assembly

      • The last valid value and information on whether the reception is being received is sent to the service center.

      • Communication with AVN completes and a screen display failure is sent to the service center.

      		 Nothing U0155

      ERA-GLONASS

      (Sends position location to the emergency call center and calls an operator when the system detects that an airbag has been deployed or the button is pressed.)

      1. Telematics transceiver

      2. ECM

      3. -

      		 When CAN communication is lost, registration requests from the GTS are denied. Nothing U0100

      EPB*: Abbreviation for electric parking brake