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

      1. Control Master

      2. System Related

      3. Control Actuator

      		 Fail-safe Function System Behavior Indicator and Buzzer Behavior or User Notification

      DTC Detection

      (ECU that stored DTC)

      Air Conditioner


      • 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, Power management control ECU

      3. -

      • While the power switch is on (IG), control is performed with the engine coolant temperature set to the default value 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).

      • There is no default behavior for power source modes other than on (IG).

      		 Nothing

      U0293

      (Air conditioning amplifier assembly)

      Simple Load Control

      (Limits 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), the current state is maintained (during a reset, there is no load control). There is no default behavior for power source modes other than on (IG). Nothing

      U0131

      (Air conditioning amplifier assembly)

      Panel Control


      • Controls the A/C system operation state and panel switch IND output according to the panel switch operation information.

      • Determines the exhaust gas automatic circulation availability and circulation switching according to the exhaust gas automatic circulation availability information.

      1. Air conditioning amplifier assembly

      2. Multi-media module receiver assembly

      3. -

      		 While the power switch is on (IG), the switch is off and the exhaust gas availability information is maintained. There is no default behavior for power source modes other than on (IG). Cannot change the operation state of the air conditioning system when the power switch is on (IG).

      U0163

      (Air conditioning amplifier assembly)

      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), the current state is maintained (during a reset, dimming control is performed). There is no default behavior for power source modes other than on (IG). Cannot switch between dimming states (after a reset is performed, the system stays in dimming mode). There is no way to recognize a failure while in power source modes other than on (IG).

      U0142

      (Air conditioning amplifier assembly)

      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), the current state is maintained. There is no default behavior for power source modes other than on (IG). Nothing

      U0142

      (Air conditioning amplifier assembly)

      Remote Start Control

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

      1. Air conditioning amplifier assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 While the power switch is on (IG), remote start control is not performed. There is no default behavior for power source modes other than on (IG). While the power switch is on (IG), the A/C system does not begin operation according to the remote start information. There is no way to recognize a failure while in power source modes other than on (IG). -

      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]). There is no default behavior for power source modes other than on (IG). The value displayed for the outside temperature is less reliable and may not match with the actual outside temperature. The proper airflow volume level for the air conditioning system may be incorrect (while the power switch is on [IG]).

      U0155

      (Air conditioning amplifier assembly)

      Air Conditioning ECO Control

      (ECO-mode control is performed.)

      1. Air conditioning amplifier assembly

      2. ECM

      3. -

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

      Engine System Indicator Display


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

      • Estimates whether the oil has deteriorated and displays a request to change the oil.

      1. ECM

      2. Combination meter assembly

      3. Combination meter assembly

      • The combination meter display cannot be cleared for oil maintenance.

      • There is no injector maintenance display.

      • The system is unable to inform the user that the oil or an injector needs to be replaced.

      • The combination meter display cannot be cleared.

      		 -

      Electrical Load Control

      (Idle up according to the electrical load is performed.)

      1. ECM

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

      3. ECM

      		 Idle up according to the electrical load is not performed. The idling speed changes. -

      Air Conditioner


      • Performs idle up according to the compressor load.

      • Performs air conditioning cut control.

      1. Power management control ECU

      2. Air conditioning amplifier assembly

      3. Air conditioning amplifier assembly

      		 Air conditioning-linked control does not operate (cannot perform idle up). During an ACN malfunction, the air conditioner does not operate. -

      PTC Heater

      (Performs idle up according to requests from the PTC heater [including the coolant heater] or heater system.)

      1. Power management control ECU

      2. Air conditioning amplifier assembly

      3. Power management control ECU

      		 The PTC heater does not operate (permission is not granted).

      • The idling speed changes.

      • There is degradation in heater performance.

      • The PTC heater does not operate.

      		 -

      Charging Control

      (Performs idle up according to charging requests.)

      1. Power management control ECU

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

      3. Power management control ECU

      		 Prohibits charging control and the alternator autonomously generates electricity. Nothing -

      Eco Driving Indicator

      (Displays information to the driver to encourage eco-driving.)

      1. Power management control ECU

      2. -

      3. Combination meter assembly

      		 Nothing No information is displayed. -

      Integrated Control (VDM)

      (Estimates the driver requested torque based on the accelerator pedal operation and performs torque characteristic control according to driving conditions so that drivability, acceleration performance and acceleration feeling are improved.)

      1. Power management control ECU

      2. Spiral with sensor cable sub-assembly (steering angle sensor), Skid control ECU assembly, Yaw rate sensor, Driving support ECU assembly

      3. ECM

      		 Does not estimate the driver requested torque based on the accelerator pedal operation and does not perform torque characteristic control according to driving conditions and as a result, drivability, acceleration performance and acceleration feeling are not improved. Does not estimate the driver requested torque based on the accelerator pedal operation and does not perform torque characteristic control according to driving conditions and as a result, drivability, acceleration performance and acceleration feeling are not improved. -

      Eco Control

      (Performs electronic throttle control according to fuel consumption.)

      1. Power management control ECU

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

      3. Power management control ECU

      		 Eco mode does not operate. Eco mode does not operate. -

      ECT System Indicator

      (Indicates the shift position, states of switches, system modes, etc.)

      1. Power management control ECU

      2. Main body ECU (multiplex network body ECU)

      3. Combination meter assembly

      		 Nothing ECT system indicator turns off. -

      AI-SHIFT Control

      (Controls the automatic transmission in order to improve engine braking power and acceleration feel.)

      1. Power management control ECU

      2. Skid control ECU assembly, Multi-media module receiver assembly

      3. Power management control ECU

      		 AI-SHIFT control does not operate. Nothing -

      Coast Downshift/Heater Requested Upshift Delay

      (Changes the coast downshift point based on the air conditioning load. Performs heater requested upshift delay.)

      1. Power management control ECU

      2. Air conditioning amplifier assembly

      3. Power management control ECU

      		 Coast downshift does not operate. Coast downshift shock becomes stronger. -

      Cruise Control

      (Adjusts the engine throttle valve opening amount automatically to control the vehicle.)

      1. Power management control ECU, Driving support ECU assembly

      2. Power management control ECU, Combination meter assembly, Skid control ECU assembly, Driving support ECU assembly

      3. Power management control ECU

      		 Nothing

      • Radar cruise control does not operate when there is a problem with communication.

      • The cruise control main indicator illuminates.

      		 -

      • ACC control is canceled.

      • The fail-safe function operates only during ACC control.

      		 A warning message is displayed (when the cruise control main switch is on).

      U0293

      (Driving support ECU assembly)

      Meter Display Control

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

      1. Combination meter assembly

      2. ECM

      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

      (Control electric fan according to A/C requests.)

      1. ECM

      2. Air conditioning amplifier assembly

      3. -

      		 Fan operates in fail-safe mode. Nothing -

      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. Power management control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Skid control ECU assembly

      3. Power steering ECU assembly, Combination meter assembly

      • 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)

      VDIMα System

      (Calculates the current to be used for the steering assist according to the commanded value from VSC [Electronically Controlled Brake System], and then operates the motor.)

      1. Power steering ECU assembly

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

      3. Power steering ECU assembly

      		 VDIMα control is stopped. Nothing

      U0129

      (Power steering ECU assembly)

      Lane Keeping Assist System

      (Calculates the current to be used for the steering assist according to the commanded torque value from the ACC [DSS1], and then operates the motor.)

      1. Driving support ECU assembly

      2. Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Driving support ECU assembly

      3. Power steering ECU assembly

      		 Lane keeping assist control ends. Nothing

      U1104

      (Power steering ECU assembly)

      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

      		 Nothing Nothing -

      αB Control

      (Performs assist to prevent sliding sideways.)

      1. Power steering ECU assembly

      2. Skid control ECU assembly

      3. Power steering ECU assembly

      		 During αB control, if the data becomes invalid, control stops. The EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      Steering Assist Calculation

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

      1. Power steering ECU assembly

      2. Skid control ECU assembly

      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 EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)

      Assist Start Judgment

      (Permits assist only when the engine is running.)

      1. Power steering ECU assembly

      2. Power management control ECU, Skid control ECU assembly

      3. -

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

      • When only ECB* communication is lost: There is 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 EHV and ECB* communication is lost: Assist begins using a fixed value of 100 km/h (62 mph).

      • When EHV communication is lost before assist starts, the EPS indicator illuminates. Once assist starts, there is no indication of a failure.

      • When ECB* communication is lost, the EPS indicator illuminates. The EPS indicator 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.)

      1. Combination meter assembly

      2. Power management control ECU, 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. Power management control ECU, Skid control ECU assembly

      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 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 EPS light is sent to the combination meter.)

      1. Combination meter assembly

      2. Power management control ECU, Power steering ECU assembly

      3. -

      		 Nothing Nothing -

      Steering Center Point Learning

      (Learns the steering wheel center point.)

      1. Power steering ECU assembly

      2. Spiral with sensor cable sub-assembly (steering angle sensor), Skid control ECU assembly, Yaw rate sensor

      3. -

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

      U0129

      (Power steering ECU assembly)

      Compensation Control

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

      1. Power steering ECU assembly

      2. Skid control ECU assembly

      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 EPS warning light illuminates.

      U0129

      (Power steering ECU assembly)
      Stops air conditioning operation in order to decrease battery power consumption when the battery voltage decreases.

      1. Power steering ECU assembly

      2. -

      3. Air conditioning amplifier assembly

      		 Nothing Nothing -

      Vehicle Speed Display

      (Displays the vehicle speed on the speedometer according to the vehicle speed signal from VSC.)

      1. Combination meter assembly

      2. Skid control ECU assembly

      3. -

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

      • The drive monitor stops calculating.

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

      • The drive monitor stops calculating.

      U0129

      (Combination meter assembly)

      Tachometer

      (Displays information on the tachometer.)

      1. Combination meter assembly

      2. ECM

      3. -

      • The tachometer displays 0 rpm.

      • The drive monitor stops calculating.

      • The tachometer displays 0 rpm.

      • The drive monitor stops calculating.

      U0100

      (Combination meter assembly)

      HV Indicator

      (Operates the HV indicator.)

      1. Combination meter assembly

      2. Power management control ECU

      3. -

      		 The HV indicator turns of (for needle indicator, a minimum of -100%) The HV indicator turns of (for needle indicator, a minimum of -100%)

      U0100

      (Combination meter assembly)

      Airbag

      (Turns the SRS warning light on and off.)

      1. Combination meter assembly

      2. Center airbag sensor assembly

      3. -

      		 The SRS warning light turns on. The SRS warning light turns on.

      U0151

      (Combination meter assembly)

      EPS Warning

      (Turns the EPS warning light on and off.)

      1. Combination meter assembly

      2. Power steering ECU assembly

      3. -

      		 The EPS warning light illuminates. The EPS warning light illuminates.

      U0131

      (Combination meter assembly)

      VGRS

      (Turns the VGRS warning light on and off.)

      1. Combination meter assembly

      2. Front steering control ECU

      3. -

      • The MASTER warning light turns on.

      • The multi-display operates.

      • The MASTER warning light turns on.

      • The multi-display operates.

      U0130

      (Combination meter assembly)

      SLIP Warning

      (Turns the SLIP warning light on and off.)

      1. Combination meter assembly

      2. Skid control ECU assembly

      3. -

      		 The SLIP indicator turns on The SLIP indicator turns on -

      ECT/ENG System

      (Display operates the engine coolant temperature gauge.)

      1. Combination meter assembly

      2. ECM

      3. -

      		 The needle of the engine coolant temperature gauge is at the C mark or below. The needle of the engine coolant temperature gauge is at the C mark or below. -

      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. -

      		 The TPMS warning light turns on. The TPMS warning light turns on. -

      TPMS (Multi-display)

      (Displays the pressure in the multi-display.)

      1. Combination meter assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 The pressure value display turns off. The pressure value display turns off. -

      Driving Control

      (Controls the engine, MG1 and MG2 after receiving engine information.)

      1. Power management control ECU

      2. ECM

      3. -

      		 Driving with motor.

      • EV indicator light illuminates.

      • MIL illuminates.

      U0100

      (Power management control ECU)

      Brake Regeneration Control

      (Tries to regenerate as much energy as possible by performing cooperative control with the ECB*.)

      1. Power management control ECU

      2. Skid control ECU assembly

      3. -

      		 Regeneration braking is prohibited. EV indicator light illuminates.

      U0129

      (Power management control ECU)

      Vehicle Damage Judgment

      (Collision determination using [CDT_HV] airbag signal.)

      1. Power management control ECU

      2. Center airbag sensor assembly

      3. -

      		 Normal driving. EV indicator light illuminates.

      U0151

      (Power management control ECU)

      Airbag Control

      (A/C ECU and A/C inverter signal transmission)

      1. Power management control ECU

      2. Air conditioning amplifier assembly

      3. -

      		 Normal driving. Air conditioning does not operate.

      U0164

      (Power management control ECU)

      Driving Support System

      (Cruise control acceleration/deceleration while following vehicle in front.)

      1. Power management control ECU

      2. Driving support ECU assembly

      3. -

      		 Cruise control is prohibited. Warning is displayed.

      U0122

      (Power management control ECU)

      Steering Sensor

      (Detects the steering wheel angle.)

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

      2. Skid control ECU assembly

      3. -

      		 STR1S01 (STS0=1) is periodically transmitted every 12 ms. Nothing -

      VGRS

      (Changes the steering gear ratio according to the vehicle speed information and steering angle.)

      1. Front steering control ECU

      2. Power management control ECU, Power steering ECU assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Skid control ECU assembly

      3. Front steering control ECU

      		 The VGRS system and DRS system does not operate.

      • The VGRS system does not operate.

      • The combination meter operates (master caution and/or multi-information display).

      • U0101

      • U0126

      • U0129

      • U0131

      • U0293

      (Front steering control ECU)

      VDIM-β

      Operates the active front steering function based on requests from VSC.

      1. Front steering control ECU

      2. Power management control ECU, Power steering ECU assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Skid control ECU assembly, Yaw rate sensor

      3. Front steering control ECU

      		 The VDIM-β does not operate.

      • The VDIM-β does not operate.

      • The combination meter operates (master caution and/or multi-information display).

      • U0101

      • U0125

      • U0126

      • U0129

      • U0131

      • U0293

      (Front steering control ECU)

      VDIM-β

      (Operates the active steering function according to the target steering angle from the VGRS [requested by the VSC].)

      1. Rear steering control ECU

      2. Power management control ECU, Front steering control ECU, Skid control ECU assembly

      3. Rear steering control ECU

      		 The VDIM-β does not operate.

      • The VDIM-β does not operate.

      • The combination meter operates (master caution and/or multi-information display).

      • U0129

      • U0130

      • U0293

      (Rear steering control ECU)

      DRS

      (Rotates the rear wheels according to the target angle from the VGRS [the target angle is calculated inside the VGRS using the vehicle speed and steering angle information].)

      1. Rear steering control ECU

      2. Power management control ECU, Front steering control ECU, Skid control ECU assembly

      3. Rear steering control ECU

      		 The VGRS system and DRS system does not operate.

      • The VGRS system and DRS system does not operate.

      • The combination meter operates (master caution and multi-display).

      • U0129

      • U0130

      • U0293

      (Rear steering control ECU)

      VDIM-β

      (Calculates the current to be used for the steering assist according to the commanded value from the VSC [Electronically Controlled Brake System], and then operates the motor.)

      1. Skid control ECU assembly

      2. Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly

      3. Power steering ECU assembly

      		 The VDIM-β does not operate. Nothing

      • U0129

      • U0130

      (Power steering ECU assembly)

      Anti-lock Brake System Control

      (Prevents the wheels from locking during sudden stops.)

      1. Skid control ECU assembly

      2. Yaw rate sensor

      3. Skid control ECU assembly

      • 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 ABS warning light turns on.

      • The SLIP warning light turns on.

      • The Brake hold standby indicator light blinks.

      • The ECB* warning light turns on.

      • U0073

      • U0123

      • U0124

      (Skid control ECU assembly)

      Vehicle Stability Control/Traction Control/Vehicle Dynamics Integrated Management Control

      (Suppresses vehicle instability, such as sliding sideways when cornering and wheel slippage when accelerating from rest. During vehicle dynamics integrated management control, vehicle integrated control which includes electronic steering control is performed.)

      1. Skid control ECU assembly

      2. Power management control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Rear steering control ECU

      3. Skid control ECU assembly

      • 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 ABS warning light turns on.

      • The SLIP warning light turns on.

      • The Brake hold standby indicator light blinks.

      • The ECB* warning light turns on.

      • U0073

      • U0123

      • U0124

      • U0126

      • U0130

      • U0134

      • U0293

      (Skid control ECU assembly)

      HV Regeneration Cooperative Control

      (Regeneration cooperative control with the HV system.)

      1. Skid control ECU assembly

      2. Power management control ECU, Yaw rate sensor

      3. Skid control ECU assembly

      • During control:


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

        • After continuing control with previous value, control amount gradually changes. After that, control is prohibited.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The ABS warning light turns on.

      • The SLIP warning light turns on.

      • The Brake hold standby indicator light blinks.

      • The ECB* warning light turns on.

      • U0073

      • U0123

      • U0124

      • U0293

      (Skid control ECU assembly)

      Brake Hold Function

      (Prevents the vehicle from moving when the brake pedal is released while the vehicle is stopped. Automatically operates the electric parking brake according to requests from the skid control ECU.)

      1. Skid control ECU assembly

      2. Power management control ECU, Yaw rate sensor, Parking brake ECU assembly

      3. Skid control ECU assembly

      • During control:


        • After "Depress the brake pedal Check Brake Hold System" is displayed on the multi-information screen, fluid pressure hold control finishes when the brakes are on.

        • Continues control and after normal control finishes, control is prohibited.

      • Not during control: Control cannot start.

      • The brake warning light illuminates.

      • The ABS warning light turns on.

      • The SLIP warning light turns on.

      • The Brake hold standby indicator light blinks.

      • The ECB* warning light turns on.

      • U0073

      • U0123

      • U0124

      • U0126

      • U0128

      • U0293

      (Skid control ECU assembly)

      Trigger Response/Autonomous Transmission

      (Outputs the yaw rate and acceleration sensor signal.)

      1. Yaw rate sensor

      2. Skid control ECU assembly

      3. Skid control ECU assembly

      		 YGS1S03 (YGS0=1) is periodically transmitted every 12 ms. Nothing -

      Static Braking

      (When the vehicle is stopped, the parking brake electronically operates to hold the vehicle in place when the driver operates the switch.)

      1. Parking brake ECU assembly

      2. Skid control ECU assembly

      3. Parking brake ECU assembly

      		 It cannot be determined whether the vehicle is stopped or not (there is no effect on this function). The electric parking brake warning light illuminates.

      • U0073

      • U0129

      (Parking brake ECU assembly)

      Dynamic Parking Brake

      (Slows down the moving vehicle with the parking brake. Braking power is only effective while pressing the switch. Once the switch is released, the parking brake is automatically released.)

      1. Parking brake ECU assembly

      2. Skid control ECU assembly

      3. Parking brake ECU assembly

      		 It cannot be determined whether the vehicle is stopped or not (there is no effect on this function). The electric parking brake warning light illuminates.

      • U0073

      • U0129

      (Parking brake ECU assembly)

      Shift-linked Function

      (When the shift lever is moved to P, the electric parking brake automatically operates. If the shift lever is moved to D, N or R, the electric parking brake is automatically released.)

      1. Parking brake ECU assembly

      2. Power management control ECU, Skid control ECU assembly, Yaw rate sensor

      3. Parking brake ECU assembly

      		 The shift-linked function is prohibited.

      • The electric parking brake warning light illuminates.

      • When the vehicle starts off.

      • U0073

      • U0124

      • U0129

      • U0293

      (Parking brake ECU assembly)

      Brake Hold Function

      (Prevents the vehicle from moving when the brake pedal is released while the vehicle is stopped. Automatically operates the electric parking brake according to requests from the skid control ECU.)

      1. Parking brake ECU assembly

      2. Skid control ECU assembly

      3. Parking brake ECU assembly

      		 Brake hold control is prohibited.

      • When transmission is lost:


        • Brake hold control is prohibited before brake fluid pressure is applied.

        • While brake fluid pressure is applied, if the brake pedal is depressed after "Depress the brake pedal Check Brake Hold System" is displayed on the multi-information display, brake hold control is prohibited.

      • When communication is lost:


        • The electric parking brake warning light illuminates.

        • The parking brake is automatically locked and "The Parking Brake has been automatically locked" is displayed.

      • U0073

      • U0129

      (Parking brake ECU assembly)

      AVS

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

      1. Absorber control ECU

      2. Power management control ECU, Combination meter assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Multi-media module receiver assembly, Main body ECU (multiplex network body ECU), Driving support ECU assembly

      3. Absorber control ECU

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

      • The system is assumed to be in normal mode and AVS control continues.

      • Not during emergency steering control: Control continues except for the intermediate level setting control, roll control and navigation-linked control.

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

      		 Nothing

      • U0101

      • U0122

      • U0124

      • U0126

      • U0130

      • U0293

      (Absorber control ECU)

      DRS

      (Rotates the rear wheels according to the target angle from the VGRS [the target angle is calculated inside the VGRS using the vehicle speed and steering angle information].)

      1. Rear steering control ECU

      2. Power management control ECU, Front steering control ECU, Skid control ECU assembly

      3. Rear steering control ECU

      		 The DRS system do not operate.

      • The DRS system do not operate.

      • The combination meter operates (master caution and multi-display).

      • U0129

      • U0130

      • U0293

      (Multi-media module receiver assembly)

      Panel Control

      (Controls the selecting of the registers, temperature adjustment, etc. according to the operation of the remote start switches on the display.)

      1. Multi-media module receiver assembly

      2. Air conditioning amplifier assembly

      3. Air conditioning amplifier assembly

      • Turns off any indicators related to the air conditioning system.

      • If the set air temperature is displayed, the system clears the set air temperature display.

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

      		 The "Climate control system error. Please contact your dealer." screen appears.

      U0073

      (Multi-media module receiver assembly)

      Clearance Sonar Setting / Notification

      (Controls the settings for the clearance sonar screen notifications which are set by operating the touch switches of the multi-display, displays the sonar status and plays voice warnings.)

      1. Multi-media module receiver assembly

      2. ECM, Power management control ECU, 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 which is displayed on the vehicle settings screen is cleared.

      • U0073

      • U0100

      • U0293

      • U1110

      (Multi-media module receiver assembly)

      Eco Navigation Display

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

      1. Multi-media module receiver assembly

      2. ECM, Power management control ECU, Combination meter assembly, Skid control ECU assembly

      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

      (Multi-media module receiver assembly)

      HV Energy Flow Display

      (Displays energy flow screen which indicates state of drive force and regeneration.)

      1. Multi-media module receiver assembly

      2. Power management control ECU

      3. -

      		 If a communication failure occurs while the energy flow screen is displayed, the energy flow display turns off and the remaining charge in the auxiliary battery is used as the last value.

      • The energy flow screen flow display turns off.

      • The energy flow screen tires do not rotate in reverse.

      U0293

      (Multi-media module receiver assembly)

      Rear View Monitor Control

      (Displays the guide lines based on the steering sensor, vehicle speed and vehicle information [whether the vehicle is 2WD or 4WD, the VGRS information, ARS information and long/short information].)

      1. Multi-media module receiver assembly

      2. Power management control ECU, Power steering ECU assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Rear steering control ECU, Main body ECU (multiplex network body ECU), Headlight swivel ECU assembly (AFS 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.

      • U0126

      • U0129

      • U0130

      • U0131

      • U0134

      • U0140

      • U0182

      • U0293

      (Multi-media module receiver assembly)

      Destination Determination

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

      1. Multi-media module 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

      (Multi-media module receiver assembly)

      Vehicle Diagnosis Recorder

      (Continuously records the status information from the control ECU and sensor information to the HDD in the EMV [AVN].)

      1. Multi-media module receiver assembly

      2. Air conditioning amplifier assembly, ECM, Power steering ECU assembly, Combination meter assembly, Front steering control ECU, Skid control ECU assembly, Parking brake ECU assembly, Absorber control ECU, Main body ECU (multiplex network body ECU), Center airbag sensor assembly

      3. -

      		 Records last received value to HDD every 500 milliseconds Nothing -

      Remote Diagnosis Function

      (Uses the DCM to send diagnosis information to the service center.)

      1. Multi-media module receiver assembly

      2. Air conditioning amplifier assembly, ECM, Power steering ECU assembly, Combination meter assembly, Front steering control ECU, Skid control ECU assembly, Rear steering control ECU, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body ECU), Position control ECU assembly LH (except Standard Seat Type), Power seat switch assembly (for Standard Seat Type), Driving support ECU assembly, Seat belt control ECU, Center airbag sensor assembly

      3. -

      		 3 retires are performed (including the first time). When the DTC data is uploaded to the service center, it assigns an unresponsive status code to ECUs which do not respond.

      U0073

      (Multi-media module 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.)

      1. Multi-media module 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, Position control ECU assembly LH (except Standard Seat Type), Power seat switch assembly (for Standard Seat Type), Driving support ECU assembly, Seat belt control ECU, Center airbag sensor assembly

      3. -

      • When a phase 4 remote communication usage application is performed (customize or remote diagnosis), the information is processed regardless of whether the BDB 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

      (Multi-media module receiver assembly)
      Displays the navigation intersection guide information on the meter or HUD device.

      1. Combination meter assembly

      2. Multi-media module receiver assembly

      3. -

      		 Nothing Nothing

      U0073

      (Multi-media module receiver assembly)

      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

      (Multi-media module receiver assembly)

      Rear View Monitor Control/CAN Compatible Rear Camera


      • Rear view control displays the back camera view.

      • CAN compatible camera displays the camera view.

      1. Multi-media module receiver assembly

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

      3. -

      		 Nothing The screen does not change to the camera screen.

      U0100

      (Multi-media module receiver assembly)

      Entry and Start System


      • Performs the entry lock/unlock, entry trunk open/unlatch operations.

      • Operates the entry alarm.

      • Operates the entry illumination (dome light illumination, etc.).

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

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

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

      		 An entry unlock retry is performed.

      • When communication is lost:


        • 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.

        • The answer back function repeats a maximum of 3 times when an unlock operation is performed. However, only if the BDB is able to receive a request from the IDT.

      • When transmission is abnormal:


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

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

        • Entry illumination does not operate.

      • U0142

      • U0155

      (Certification ECU [smart key ECU assembly])

      Entry and Start System


      • Performs the entry lock/unlock, entry trunk open/unlatch operations.

      • Operates the entry alarm.

      • Operates the entry illumination (dome light illumination, etc.).

      1. Certification ECU (smart key ECU assembly)

      2. Power management control ECU

      3. Combination meter assembly

      		 The previous value is maintained.

      • When communication is lost:


        • 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.

        • The answer back function repeats a maximum of 3 times when an unlock operation is performed. However, only if the BDB is able to receive a request from the IDT.

        • Outputs a false entry alarm.

      • When transmission is abnormal:


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

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

        • Entry illumination does not operate.

      U0293

      (Certification ECU [smart key ECU assembly])

      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 When transmission is abnormal: Wireless lock/unlock and trunk functions do not operate. -

      Remote Engine Start Function

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

      1. Main body ECU (multiplex network body ECU)

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

      3. ECM

      		 Nothing The remote engine start does not operate.

      U0142

      (Certification ECU [smart key ECU assembly])

      Memory Function

      (Moves the seat and steering wheel to the recorded positions when an 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, Position control ECU assembly LH (except Standard Seat Type), Power seat switch assembly (for Standard Seat Type)

      		 Nothing

      • The memory system does not operate.

      • Key registration does not operate.

      U0142

      (Certification ECU [smart key ECU assembly])

      Power Switch Illumination Control

      (Operates the power switch 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)

      • When 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 never illuminate.

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

      • When the power switch letters are illuminated due to the dome light, the illumination does not turn off.

      • When the DC cut fuse is removed and the power switch letters are illuminated due to the panel illumination, the illumination does not turn off.

      U0142

      (Certification ECU [smart key ECU assembly])

      Door Lock

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

      1. Main body ECU (multiplex network body ECU)

      2. Power management control ECU, Combination meter assembly, Center airbag sensor assembly

      3. Main body ECU (multiplex network body ECU)

      • While the power switch is on (IG), the last information before the communication stop is used to perform control.

      • While the power switch is on (IG), the key-linked operation is permitted.

      • The speed-sensitive automatic door lock operation is prohibited.

      • The shift-linked automatic door lock operation is prohibited.

      • The shift-linked automatic door unlock operation is prohibited.

      • Automatic door lock switching is prohibited.

      		 Recognition not possible.

      • U0101

      • U0151

      • U0155

      • U0293

      (Main body ECU [multiplex network body ECU])

      Alarm

      (Sounds various warnings.)

      1. Main body ECU (multiplex network body ECU)

      2. Power management control ECU, Luggage closer motor assembly

      3. Main body ECU (multiplex network body ECU)

      		 Nothing Nothing

      • U0120

      • U0230

      • U0293

      (Main body ECU [multiplex network body ECU])

      Automatic Dimming of Display

      (Controls the display dimming.)

      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

      (Main body ECU [multiplex network body ECU])

      Trunk Opener

      (Performs trunk open control [receives trunk open requests].)

      1. Main body ECU (multiplex network body ECU)

      2. Power management control ECU, Combination meter assembly, Luggage closer motor assembly

      3. Main body ECU (multiplex network body ECU)

      		 Prohibits opening the trunk. Recognition not possible.

      • U0101

      • U0155

      • U0293

      (Main body ECU [multiplex network body ECU])

      Illumination

      (Performs illumination control.)

      1. Main body ECU (multiplex network body ECU)

      2. Power management control ECU, Certification ECU (smart key ECU assembly)

      3. Main body ECU (multiplex network body ECU)

      • The dome light is turned off.

      • The door mirror foot light is turned off.

      • The foot light is turned off.

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

      • U0293

      • U0327

      (Main body ECU [multiplex network body ECU])

      Equipment Related

      (Controls gateway between the BERKES equipment and CAN.)

      1. Main body ECU (multiplex network body ECU)

      2. Air conditioning amplifier assembly, ECM, Power management control ECU, Combination meter assembly, Certification ECU (smart key ECU assembly)

      3. Air conditioning amplifier assembly

      • Sends an initial communication value to the BERKES equipment.

      • Operation is stopped.

      		 The remote starter function does not operate.

      • U0100

      • U0101

      • U0120

      • U0155

      • U0164

      • U0293

      • U0327

      (Main body ECU [multiplex network body ECU])

      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, Parking brake ECU assembly, Certification ECU (smart key ECU assembly), Multiplex tilt and telescopic ECU, Position control ECU assembly LH (except Standard Seat Type), Power seat switch assembly (for Standard Seat Type), Front multiplex network door ECU LH, Front multiplex network door ECU RH

      3. Multiplex tilt and telescopic ECU, Position control ECU assembly LH (except Standard Seat Type), Power seat switch assembly (for Standard Seat Type), Front multiplex network door ECU LH, Front multiplex network door ECU RH

      • Commands the seat, steering wheel, etc. to stop operating.

      • When registering the memory call, the system times out when waiting for the check results and registration is canceled.

      		 Nothing

      • U0155

      • U0199

      • U0200

      • U0208

      • U0327

      • U1106

      • U1115

      (Main body ECU [multiplex network body ECU])

      Lighting Control

      (Controls the daytime running lights.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM

      3. Main body ECU (multiplex network body ECU)

      		 Daytime running light control is not performed. Nothing

      U0100

      (Main body ECU [multiplex network body ECU])

      Tire Pressure Monitor Sensor

      (Monitors the tire pressure and meter speed, etc. and operates the meter indicators and multi-information display [gateway between BERKES and CAN].)

      1. Main body ECU (multiplex network body ECU)

      2. Combination meter assembly

      3. Combination meter assembly

      		 Sends an initial communication value to BERKES. The tire pressure monitor sensor indicator in the combination meter blinks for 1 minute and then stays illuminated.

      U0155

      (Main body ECU [multiplex network body ECU])

      Entry Beam

      (Detects oncoming traffic, vehicles ahead, street lights, etc. using an onboard sensor and automatically turns the high beam lights on and off.)

      1. Main body ECU (multiplex network body ECU)

      2. Headlight swivel ECU assembly (AFS ECU)

      3. Main body ECU (multiplex network body ECU)

      		 The system does not operate (the indicator in the meter blinks). "Check AFS" is displayed in the multi-information display.

      U0182

      (Main body ECU [multiplex network body ECU])

      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, Certification ECU (smart key ECU assembly), Position control ECU assembly LH

      3. -

      		 Nothing The memory, recall, auto-return and auto-away 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 request, shift position and vehicle speed]. Controls the tilt and telescopic functions together with seat control.)

      1. Position control ECU assembly LH

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

      3. -

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

      • The tilt and telescopic functions do not operate together with seat control.

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

      • The tilt and telescopic functions do not operate together with seat control.

      • U0140

      • U0155

      • U1115

      (Position control ECU assembly LH)

      Microcomputer Preset Position System

      (Controls the memory of the seat position according to vehicle information [power switch condition, shift position, door status and vehicle speed] and switch information [memory switch]).

      1. Position control ECU assembly RH

      2. ECM, Combination meter assembly, Main body ECU (multiplex network body ECU), Front multiplex network door ECU LH, Front multiplex network door ECU RH

      3. -

      		 Memory control does not operate. Memory control does not operate.

      • U0140

      • U0155

      (Position control ECU assembly RH)

      Light Control

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

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      2. Main body ECU (multiplex network body ECU)

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      • The courtesy lights do not operate.

      • The mirror puddle lights do not operate.

      • The courtesy lights do not operate.

      • The mirror puddle lights do not operate.

      U0142

      (Front multiplex network door ECU LH, Front multiplex network door ECU RH)

      Mirror Operation Control

      (Controls the operation of the outer mirrors based on mirror switch information from the BDB.)

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      2. Main body ECU (multiplex network body ECU)

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

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

      U0142

      (Front multiplex network door ECU LH, Front multiplex network door ECU RH)

      Mirror Heater Control

      (Controls the operation of the outer mirror heaters based on defogger switch information from the ACN.)

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

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

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

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

      U0142

      (Front multiplex network door ECU LH, Front multiplex network door ECU RH)
      Controls the electronic retraction operation of the outer mirrors based on mirror switch information from the BDB.

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      2. Main body ECU (multiplex network body ECU)

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      		 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 BDB.)

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      2. Main body ECU (multiplex network body ECU)

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      		 The mirror reverse-linked operation does not operate. The mirror reverse-linked operation 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 BDB.)

      1. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      2. Main body ECU (multiplex network body ECU)

      3. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      • 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

      (Transmits the memory switch signal via CAN communication.)

      1. Main body ECU (multiplex network body ECU)

      2. Front multiplex network door ECU LH, Front multiplex network door ECU RH

      3. Main body ECU (multiplex network body ECU)

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

      Power Trunk Lid Automatic Open/Close Function

      (Automatically opens the trunk according to the trunk opener switch and operation conditions [power switch state, shift position, STP, parking brake state and vehicle speed]. Automatically closes the trunk using the power trunk lid close switch.)

      1. Luggage closer motor assembly

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

      3. -

      • The automatic trunk open function does not operate.

      • The automatic trunk close function cannot reverse operation during operation.

      • The automatic trunk open function does not operate.

      • The automatic trunk close function cannot reverse operation during operation.

      		 -

      Luggage Compartment Closer Function

      (Completely closes the trunk when it is ajar.)

      1. Luggage closer motor assembly

      2. ECM, Combination meter assembly, Skid control ECU assembly, Certification ECU (smart key ECU assembly), Main body ECU (multiplex network body 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. Luggage closer motor assembly

      2. Main body ECU (multiplex network body ECU)

      3. -

      		 Nothing When the luggage compartment door opens, the indicator in the meter indicating the door is open does not illuminate (the BDB recomposes the signal and sends it to the MET). -

      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 swivel ECU assembly (AFS ECU)

      2. Power management control ECU, Skid control ECU assembly, Main body ECU (multiplex network body ECU)

      3. -

      • Leveling control continues with the vehicle speed set to 0 km/h (0 mph).

      • Swivel control sets the headlights so that they are facing directly forward.

      • "Check AFS" is displayed in the multi-information display.

      • If a periodic error occurs while accelerating, the vehicle speed does not change. As a result, the system determines the vehicle is being driven at a constant speed and the leveling function does not make adjustments which follow the change in pitch angle. At this time, the lights may become a nuisance to oncoming traffic.

      • If a periodic error occurs while decelerating, the vehicle speed does not change. As a result, the system determines the vehicle is being driven at a constant speed and the leveling function does not make adjustments which follow the change in pitch angle. At this time, visibility may become worse.

      • If a periodic error occurs while accelerating and decelerating, the vehicle speed changes rapidly and the movement of the swivel function may appear to be choppy.

      • U0073

      • U0129

      • U0142

      • U0293

      (Headlight swivel ECU assembly [AFS ECU])

      Swivel

      (Estimates the turning radius based on the wheel speed and steering angle, and turns the headlights according to the turning radius.)

      1. Headlight swivel ECU assembly (AFS ECU)

      2. Power management control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Rear steering control ECU, Main body ECU (multiplex network body ECU)

      3. -

      • Leveling control continues with the vehicle speed set to 0 km/h (0 mph).

      • Swivel control sets the headlights so that they are facing directly forward.

      • "Check AFS" is displayed in the multi-information display.

      • If a periodic error occurs while accelerating, the vehicle speed does not change. As a result, the system determines the vehicle is being driven at a constant speed and the leveling function does not make adjustments which follow the change in pitch angle. At this time, the lights may become a nuisance to oncoming traffic.

      • If a periodic error occurs while decelerating, the vehicle speed does not change. As a result, the system determines the vehicle is being driven at a constant speed and the leveling function does not make adjustments which follow the change in pitch angle. At this time, visibility may become worse.

      • If a periodic error occurs while accelerating and decelerating, the vehicle speed changes rapidly and the movement of the swivel function may appear to be choppy.

      • U0073

      • U0101

      • U0126

      • U0129

      • U0130

      • U0134

      • U0142

      • U0293

      (Headlight swivel ECU assembly [AFS ECU])

      AFS Indicator

      (Monitors the AFS system for malfunctions and blinks the indicator in the meter when a malfunction is detected.)

      1. Headlight swivel ECU assembly (AFS ECU)

      2. Headlight swivel ECU assembly (AFS ECU)

      3. Combination meter assembly

      		 The AFS OFF indicator status is maintained. Nothing

      U0073

      (Headlight swivel ECU assembly [AFS ECU])

      ACC

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

      1. Driving support ECU assembly

      2. Power management control ECU, Combination meter assembly, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Yaw rate sensor, Parking brake ECU assembly, Main body ECU (multiplex network body ECU)

      3. ECM, Skid control ECU assembly

      • ACC is canceled.

      • The fail-safe function operates only during ACC.

      		 A warning message is displayed (when the cruise control main switch is on).

      • U0125

      • U0126

      • U0293

      • U1104

      (Driving support ECU assembly)

      PCS

      (Controls the seat belts and brakes immediately before a crash.)

      1. Driving support ECU assembly

      2. Power management control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Yaw rate sensor, Rear steering control ECU, Main body ECU (multiplex network body ECU), Seat belt control ECU, Center airbag sensor assembly

      3. Skid control ECU assembly, Absorber control ECU, Seat belt control ECU

      		 PCS control is canceled. The PCS indicator blinks and a warning message is displayed for vehicles with MID (when the PCS OFF switch is off).

      • U0125

      • U0126

      • U0142

      • U0293

      • U1002

      • U1100

      • U1104

      (Driving support ECU assembly)

      LKA

      (Controls the steering assist by following the lane markers.)

      1. Driving support ECU assembly

      2. Power steering ECU assembly, Skid control ECU assembly, Yaw rate sensor, Main body ECU (multiplex network body ECU)

      3. Power steering ECU assembly, Skid control ECU assembly

      • LKA control is canceled.

      • The fail-safe function operates only during LKA control.

      		 A warning message is displayed (when the LKA main switch is on).

      • U0125

      • U0131

      • U1104

      (Driving support ECU assembly)

      Clearance Sonar Customize

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

      1. Clearance warning ECU assembly

      2. Multi-media module 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. Power management control ECU, 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

      (Clearance warning ECU assembly)

      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 (12.4 mph) or more. Nothing

      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.)

      1. Clearance warning ECU assembly

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

      3. Clearance warning ECU assembly

      		 Assumes that 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 -

      PCS (Operation Conditions 1)

      (PSB ECU performs pre-crash seat belt operation and retracts seatbelts that are fastened [receives buckle switch ON/OFF information from ABG] when VSC is performing sudden braking or the vehicle is uncontrollable [spinning or drifting], thereby enhancing the effect of the pretensioner.)

      1. Seat belt control ECU

      2. Skid control ECU assembly, Main body ECU (multiplex network body ECU), Center airbag sensor assembly

      3. Seat belt control ECU

      		 The PSB ECU detects a communication failure or malfunction. Control stops. The PCS indicator blinks.

      • U0129

      • U0140

      • U0151

      (Seat belt control ECU)

      PCS (Operation Conditions 2)

      (PSB ECU performs pre-crash seat belt operation and retracts seatbelts that are fastened when DSS#1 determines that a crash is unavoidable based on information from the millimeter wave radar sensor, thereby enhancing the effect of the pretensioner.)

      1. Seat belt control ECU

      2. Skid control ECU assembly, Main body ECU (multiplex network body ECU), Driving support ECU assembly, Center airbag sensor assembly

      3. Seat belt control ECU

      		 The PSB ECU detects a communication failure or malfunction. Control stops. The PCS indicator blinks.

      • U0129

      • U0140

      • U0151

      • U1104

      (Seat belt control ECU)

      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. Center airbag sensor assembly

      2. ECM, Skid control ECU assembly

      3. -

      • When there is a communication error, a failure notification is received from the other device, or an invalid value is recorded in the EDR when the communication failure occurs.

      • When there is a periodic problem, the previous value is maintained.

      		 Nothing -

      Crash Detection Signal

      (Reports a crash in order to perform a fuel cut, etc. during a crash.)

      1. ECM

      2. Center airbag sensor assembly

      3. -

      		 Nothing Nothing -

      Passenger Side Air Conditioning Control

      (Sends information about the passenger in order to control the passenger side air conditioning according to whether there is a passenger in the passenger side seat.)

      1. Air conditioning amplifier assembly

      2. Center airbag sensor assembly

      3. -

      		 Nothing Nothing -

      Blind Spot Detection

      (Warns the driver when the system detects a vehicle in the blind spot of an outer mirror.)

      1. Blind spot monitor sensor RH

      2. Power management control ECU, Spiral with sensor cable sub-assembly (steering angle sensor), Front steering control ECU, Skid control ECU assembly, Main body ECU (multiplex network body ECU)

      3. Blind spot monitor sensor RH

      		 A DTC is stored and the blind spot monitor is disabled.

      • The BSM indicator illuminates.

      • A warning is displayed on the multi-information display.

      • U0126

      • U0129

      • U0142

      • U0293

      (Blind spot monitor sensor RH)

      Gateway System


      • Monitors the data transmitted between the V bus and sub bus 2 and the ECUs connected to the sub bus 2.

      • Monitors the data transmitted between the V bus and sub bus 18, the V bus and sub bus 19, and the sub bus 18 and sub bus 19, and also monitors the ECUs connected to the sub bus 18 and sub bus 19.

      1. Network gateway ECU

      2. Power management control ECU, Power steering ECU assembly, Front steering control ECU, Skid control ECU assembly, Absorber control ECU, Rear steering control ECU, Driving support ECU assembly, Clearance warning ECU assembly, Seat belt control ECU, Blind spot monitor sensor RH

      3. -

      		 When communication with all the ECUs that are connected to the sub bus is lost, the communication software, which includes information on the gateway, and the CAN controller are reset, and the frames collected in the gateway are discarded. Depends on the operation of each ECU.

      • U0104

      • U0129

      • U0130

      • U0131

      • U0132

      • U0134

      • U0198

      • U0233

      • U1002

      • U1100

      • U1110

      • U1133

      (Network gateway ECU)

      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. Multi-media module 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

      (Telematics transceiver)

      • ECB*: Electronically Controlled Brake System