CAN COMMUNICATION SYSTEM (for RHD with Entry and Start System) 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

      (Function Description)

      1. Control Master

      2. System Related

      		 Behavior in Communication Failure User Notification Diagnostic Trouble Code

      Kinetic Dynamic Suspension System

      (Opens and closes the accumulator valve to suppress roll.)

      1. Stabilizer control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Combination meter assembly

      • U0100: Control continues.

      • U0122: The accumulator valve is open.

      • U0124: Control continues using only the steering angle sensor signal.

      • U0126: Control continues using only the yaw rate signal.

      		 The KDSS indicator light turns on.

      • U0100

      • U0122

      • U0124

      • U0126

      Vehicle Height Control

      (Performs vehicle height adjustments.)

      1. Suspension control ECU

      2. ECM

        Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Four wheel drive control ECU, Main body ECU (multiplex network body ECU)

      • U0100: Control continues operation.

      • U0114: Control continues operation.

      • U0122: The normal vehicle height is maintained.

      • U0124: Control continues operation.

      • U0126: Control continues operation.

      • U0140: Control continues operation.

      • U0100: Nothing

      • U0114: Nothing

      • U0122: The warning is displayed.

      • U0124: Nothing

      • U0126: Nothing

      • U0140: Nothing

      • U0100

      • U0114

      • U0122

      • U0124

      • U0126

      • U0140

      Damping Force Control

      (Controls the variable damping force depending on the vehicle state.)

      1. Suspension control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Four wheel drive control ECU, Display and navigation module display, Driving support ECU assembly

      • U0100: Control continues.

      • U0114: Control continues.

      • U0122: The damper steps become fixed.

      • U0124: Roll suppression stops.

      • U0126: The damper steps become fixed.

      		 Nothing

      • U0100

      • U0114

      • U0122

      • U0124

      • U0126

      Vehicle Speed Information Input

      (Controls solenoid current [PPS solenoid] according to the vehicle speed, steering angle, steering speed and engine speed.)

      1. Power steering ECU assembly

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 Changes to the 40 km/h (25 mph) assist map to perform control. The PPS indicator light turns on. U0073

      Steering Wheel Angle Information Input

      (Controls solenoid current [PPS solenoid] according to the vehicle speed, steering angle, steering speed and engine speed.)

      1. Power steering ECU assembly

      2. Spiral cable sub-assembly (steering angle sensor), Combination meter assembly

      		 Steering angle is fixed at 0 degrees and the steering angle speed is fixed at 360 degrees per second. The PPS indicator light turns on. U0073

      Engine Speed Information Input

      (Controls solenoid current [PPS solenoid] according to the vehicle speed, steering angle, steering speed and engine speed.)

      1. Power steering ECU assembly

      2. ECM, Combination meter assembly

      		 Control is performed using a fixed value of 0 rpm. The PPS indicator light turns on. U0073

      High-Low Switching Limitation

      (Prohibits High-Low switching when the vehicle speed or engine speed is outside the acceptable range or the A/T is not in N during the A/T status check.)

      1. Four wheel drive control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 High-Low switching is prohibited. The 4WD indicator light blinks and the buzzer sounds. -

      Center Differential Lock Switching Limitation

      (Prohibits center differential lock switching when the difference in wheel speeds is large.)

      1. Four wheel drive control ECU

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 Prohibits center differential lock switching. The 4WD indicator light blinks and the buzzer sounds. -

      Rear Differential Lock Switching Limitation

      (Prohibits rear differential lock switching when the vehicle speed is outside the acceptable range.)

      1. Four wheel drive control ECU

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 Rear differential lock switching is prohibited. The 4WD indicator light blinks. -

      L4F Switching Limitation

      (Prohibits switching to L4F when VSC is malfunctioning.)

      1. Four wheel drive control ECU

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 L4F switching is prohibited. The 4WD indicator light blinks. -

      Specialized Control during Wheel Speed Failure

      (When there is abnormal wheel speed, this control permits switching only when specified conditions are met [not all wheel speeds are abnormal, the brakes are applied, the engine speed is low and all normal wheel speeds are low].)

      1. Four wheel drive control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 When all 4 wheels are malfunctioning, switching is prohibited. The indicator lights blink quickly. -

      Indicator/Buzzer Signal Output

      (Outputs a signal indicating the indicator and buzzer state, which are used to determine the actuator position and switching status.)

      1. Four wheel drive control ECU

      2. Combination meter assembly

      		 State signal update is not possible. Nothing -

      H-L Actuator Failure Signal Output

      (Outputs a signal when the H-L actuator switch is malfunctioning.)

      1. Four wheel drive control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 State signal update is not possible. The indicator lights blink quickly. -

      Cruise Control Cancel Signal Output

      (Outputs a cruise control cancel signal when center differential switching is not completed even though 5 seconds or more have elapsed from the start of switching.)

      1. Four wheel drive control ECU

      2. ECM

      		 State signal update is not possible. Nothing -

      L4 State Signal Output

      (Outputs a signal when switching to the L4 position is finished.)

      1. Four wheel drive control ECU

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 State signal update is not possible. The status of the indicator lights change in accordance with changes in the L4 state signal. -

      Center Differential Lock State Signal Output

      (Outputs the center differential lock P/S state.)

      1. Four wheel drive control ECU

      2. Combination meter assembly

      		 State signal update is not possible. The status of the indicator lights change in accordance with changes in the center differential lock state signal. -

      Rear Differential Lock State Signal Output

      (Outputs the rear differential P/S state.)

      1. Four wheel drive control ECU

      2. Combination meter assembly

      		 State signal update is not possible. The status of the indicator lights change in accordance with changes in the rear differential lock state signal. -

      Signal Output during Switching

      (Outputs the actuator switching state.)

      1. Four wheel drive control ECU

      2. Combination meter assembly

      		 State signal update is not possible. The indicator lights blink during signal output during switching. -

      Multi-terrain Select Output

      (Outputs the signal to stop the multi-terrain select service.)

      1. Four wheel drive control ECU

      2. Driving support switch control ECU

      		 State signal update is not possible. The status of the indicator lights change in accordance with changes in the multi-terrain select state signal. -

      Entry Functions

      (Operates entry lock/unlock, entry trunk open/entry back door unlatch and entry warning/illumination functions.)

      1. Certification ECU, Main body ECU (multiplex network body ECU)

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

      		 The entry functions do not operate. Nothing U0142

      Wireless Functions

      (Operates the wireless lock/unlock, trunk and panic functions.)

      1. Main body ECU (multiplex network body ECU)

      2. Certification ECU

      		 The wireless functions do not operate. Nothing U0142

      Engine Switch Illumination Control

      (Turns the engine switch illumination on/off.)

      1. Certification ECU

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

      		 The engine switch illumination does not operate. Nothing U0142

      Memory Function

      (Moves the seat and steering wheel to a previously memorized position when an entry or wireless unlock operation is performed.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Certification ECU, Front power seat switch RH, Multiplex tilt and telescopic ECU

      		 The memory functions do not operate. Nothing

      • B2621

      • U0142

      VAST Function

      (Changes settings based on previously stored driver information.)

      1. Main body ECU (multiplex network body ECU)

      2. Certification ECU, Air conditioning amplifier assembly

      		 Driver identification is not performed. Nothing U0142

      Microcomputer Preset Steering

      (Controls the operation of the autoaway/return function and memorized driver position restoration function activated by the insertion or removal of the key or a seat belt buckle.)

      1. Multiplex tilt and telescopic ECU

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

      		 The power tilt and telescopic steering system and its memory and restore functions do not operate. Nothing

      • B2621

      • B2624

      Clearance Sonar Notification Settings

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

      1. Display and navigation module display

      2. Parking assist ECU or Clearance warning ECU assembly

      • No response to switch operations.

      • Settings screen display is cleared.

      		 Icons are cleared from the display screen.

      • U0073

      • U1110

      Eco Navigation Display

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

      1. Display and navigation module display

      2. ECM, Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 Stops updating the eco navigation display. Nothing

      • U0073

      • U0155

      Parking Assist Control

      (Displays the rear view monitor based on information from the steering sensor, the vehicle speed and vehicle information.)

      1. Display and navigation module display or Parking assist ECU

      2. ECM

        Spiral cable sub-assembly (steering angle sensor), Main body ECU (multiplex network body ECU)

      		 - The system displays "Guidance unavailable.".

      • U0073

      • U0126

      Destination Determination

      (Determines the destination of the vehicle and selects the display language, time zone, etc.)

      1. Display and navigation module display

      2. Main body ECU (multiplex network body ECU)

      		 Determines the destination based on information from before the communication stop. Nothing U0073

      ABS

      (Prevents the wheels from locking when stopping suddenly.)

      1. Master cylinder solenoid (skid control ECU)

      2. Yaw rate sensor assembly, Combination meter assembly

      		 The ABS does not operate. The light illuminates.

      • U0073

      • U0123

      • U0124

      TRC

      (Prevents instability when accelerating from a stop.)

      1. Master cylinder solenoid (skid control ECU)

      2. ECM, Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Combination meter assembly

      		 TRC does not operate. The light illuminates.

      • U0073

      • U0100

      • U0123

      • U0124

      • U0126

      VSC

      (Suppresses instability such as drift when cornering.)

      1. Master cylinder solenoid (skid control ECU)

      2. ECM, Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Combination meter assembly

      		 VSC does not operate. The light illuminates.

      • U0073

      • U0100

      • U0123

      • U0124

      • U0126

      Rear View Monitor

      (Displays steering angle-linked guide lines.)

      1. Parking assist ECU

      2. Spiral cable sub-assembly (steering angle sensor)

      		 The guide lines are not displayed. "Guidance unavailable." is displayed at the bottom of the screen.

      • U0073

      • U0126

      • U1000

      Wide View Front and Side Monitor

      (Displays steering angle-linked guide lines on the side monitor display screen. Displays steering angle-linked guide lines on the side monitor of the wide view front and side monitor simultaneous display screen.)

      1. Parking assist ECU

      2. Spiral cable sub-assembly (steering angle sensor)

      		 The guide lines are not displayed. "Guidance unavailable." is displayed at the bottom of the screen.

      • U0073

      • U0126

      • U1000

      Wide View Front and Side Monitor

      (Determines whether camera image can be displayed or not.)

      1. Parking assist ECU

      2. ECM, Master cylinder solenoid (skid control ECU)

      • When the camera screen is being displayed, the screen changes to the navigation screen.

      • When the camera screen is not displayed, switching to the camera screen is disabled.

      		 Nothing

      • U0073

      • U0100

      • U0126

      • U1000

      Multi-terrain Monitor

      (Changes to the camera screen automatically.)

      1. Parking assist ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Driving support switch control ECU, Combination meter assembly

      • When the camera screen is being displayed, the screen changes to the navigation screen.

      • When the camera screen is not displayed, switching to the camera screen is disabled.

      		 Nothing

      • U0073

      • U0100

      • U0129

      • U0155

      • U1000

      • U1114

      Camera Screen Display on Accessory Meter Assembly

      (Displays camera image on the display.)

      1. Parking assist ECU

      2. Driving support switch control ECU

      • When the camera screen is being displayed, the screen changes to the navigation screen.

      • When the camera screen is not displayed, switching to the camera screen is disabled.

      		 Nothing

      • U0073

      • U1000

      • U1114
      Camera System Factory Adjustment

      1. Parking assist ECU

      2. Main body ECU (multiplex network body ECU)

      		 A back door open warning message is displayed. A back door open warning message is displayed.

      • U0073

      • U0140

      • U1000

      Clearance Sonar Coordinated Control

      (Displays information from the TOYOTA parking assist-sensor system on the camera image of the rear view monitor, etc.)

      1. Clearance warning ECU assembly

      2. Clearance warning ECU assembly

      		 - Icon indicating a malfunction of the TOYOTA parking assist-sensor system is displayed where the normal clearance sonar icon should be while the side camera is being displayed.

      • U0073

      • U1110

      Steering Sensor

      (Detects the steering wheel angle.)

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

      2. Master cylinder solenoid (skid control ECU), Combination meter assembly

      		 - The VSC indicator light turns on. -

      TOYOTA parking assist-sensor system

      (Receives detection information from the sensors and displays warnings and sounds buzzers depending on the distance detected.)

      1. Clearance warning ECU assembly

      2. ECM, Combination meter assembly, Display and navigation module display, Main body ECU (multiplex network body ECU), Air conditioning amplifier assembly

      		 Object detection stops. Nothing

      • U0100

      • U0101

      • U0155

      Speedometer

      (Controls the speedometer according to the vehicle speed signals.)

      1. Combination meter assembly

      2. Master cylinder solenoid (skid control ECU)

      		 0 km/h (0 mph) is indicated. Behavior during a communication failure alerts the user. U0129

      Tachometer

      (Controls the tachometer according to the engine speed signals.)

      1. Combination meter assembly

      2. ECM

      		 0 rpm is indicated. Behavior during a communication failure does not alert the user. U0100

      Engine Coolant Temperature Gauge

      (Controls the temperature gauge according to the temperature signals.)

      1. Combination meter assembly

      2. ECM

      		 The temperature gauge needle is at the middle of the "C" mark or below. Nothing U0100

      Fuel Gauge

      (Controls the fuel gauge according to the vehicle condition determined by the ST signal, vehicle speed signal and fuel amount.)

      1. Combination meter assembly

      2. ECM, Master cylinder solenoid (skid control ECU), Main body ECU (multiplex network body ECU)

      • Operates the same as when the vehicle is stopped.

      • Operates with ST set to off.

      		 Nothing

      • U0100

      • U0129

      ODO/TRIP Meter

      (Calculates and indicates the driven distance according to the pulse count of the vehicle speed pulse signal.)

      1. Combination meter assembly

      2. Master cylinder solenoid (skid control ECU)

      		 The calculation stops and the last displayed value remains. Nothing U0129

      Shift Display

      (Displays the shift information according to the shift position signal.)

      1. Combination meter assembly

      2. ECM

      		 The shift display turns off. Nothing U0100

      Telltale

      (Controls the indicator illumination and blinking according to the CAN signals and direct line input signals.)

      1. Combination meter assembly

      2. ECM, Master cylinder solenoid (skid control ECU), Four wheel drive control ECU, Power steering ECU assembly, Certification ECU, Center airbag sensor assembly, Stabilizer control ECU, Main body ECU (multiplex network body ECU), Seat belt control ECU, Headlight swivel ECU assembly (AFS ECU)

      		 The indicator condition is maintained. Nothing

      • U0100

      • U0129

      • U0131

      • U0142

      • U0151

      Buzzers

      (Controls the buzzer sounding according to the CAN signals and direct line input signals.)

      1. Combination meter assembly

      2. ECM

        Master cylinder solenoid (skid control ECU), Four wheel drive control ECU, Certification ECU, Center airbag sensor assembly, Main body ECU (multiplex network body ECU)

      		 The buzzer does not sound. Nothing

      • U0100

      • U0129

      • U0142

      • U0151

      Drive Monitor

      (Performs calculations and displays drive monitor information according to the fuel injection volume and pulse count of the vehicle pulse signal.)

      1. Combination meter assembly

      2. ECM, Master cylinder solenoid (skid control ECU), Main body ECU (multiplex network body ECU)

      		 The drive monitor calculations stop and the display is blank. Nothing

      • U0100

      • U0129

      • U0142

      Multi-display Control

      (Controls the multi-display based on CAN and direct line signals.)

      1. Combination meter assembly

      2. ECM, Master cylinder solenoid (skid control ECU), Certification ECU, Main body ECU (multiplex network body ECU), Seat belt control ECU, Driving support ECU assembly, Suspension control ECU, Parking assist ECU or Clearance warning ECU assembly

      • The display condition is maintained when information is confirmed.

      • The display turns off when information is not confirmed.

      		 Nothing

      • U0100

      • U0129

      • U0142

      A/C Control

      (Controls the air conditioning according to the engine coolant temperature information, controls the operation according to the viscous heater operation permission information and controls the operation according to the PTC heater operation permission information.)

      1. Air conditioning amplifier assembly

      2. ECM, Combination meter assembly, Display and navigation module display, Main body ECU (multiplex network body ECU), Air conditioning amplifier assembly

      • Maintains the current conditions.

      • PTC control does not operate.

      		 Nothing

      • U0100

      • U0142

      • U0155

      • U0163

      AFS (Adaptive-front Lighting System)

      (Calculates the swivel angle and turning radius based on the wheel speeds and steering angle and controls the movement of the headlights.)

      1. Headlight swivel ECU assembly (AFS ECU)

      2. ECM, Master cylinder solenoid (skid control ECU), Spiral with sensor cable subassembly, Main body ECU (multiplex network body ECU)

      • Adaptive-front lighting system operation is normal.

      • The AFS OFF indicator light blinks.

      		 The AFS OFF indicator light blinks.

      • U0073

      • U0100

      • U0126

      • U0129

      • U0142

      Door Lock (Key-linked Function, Key Lock-in Prevention Function, etc.)

      (Performs lock/unlock control.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Combination meter assembly, Center airbag sensor assembly

      • The vehicle speed linked auto lock does not operate.

      • The shift linked auto lock/ unlock function does not operate.

      		 Nothing

      • U0100

      • U0101

      • U0151

      • U0155

      Wireless/Entry and Start

      (Performs wireless/entry and start control.)

      1. Certification ECU

      2. Main body ECU (multiplex network body ECU)

      • Entry and start/wireless control does not operate.

      • The door lock/unlock control does not operate.

      • Back door opener control do not operate.

      		 Nothing U0327

      Alarm

      (Sounds warnings.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM, Power management control ECU

      		 - Nothing

      • U0100

      • U0101

      • U1133

      Illumination Control

      (Controls the daytime running lights.)

      1. Main body ECU (multiplex network body ECU)

      2. ECM

      		 Control is not performed. Nothing

      • U0100

      • U0101

      Display Automatic Dimming

      (Controls display dimming control.)

      1. Combination meter assembly

      2. -

      		 Dims the interior display/indicators when not in the tail cancel state. Nothing U0155

      Illumination

      (Performs illumination control.)

      1. Main body ECU (multiplex network body ECU)

      2. Certification ECU

      		 Turns off the map light. Nothing U0327

      Seat and Mirror Control

      (Performs memory control [seat, steering wheel and mirror position adjustment].)

      1. Main body ECU (multiplex network body ECU)

      2. Power management control ECU, Certification ECU, Front power seat switch RH, Multiplex tilt and telescopic ECU

      		 - Nothing

      • U0208

      • U1115

      Equipment Related

      (Processes the ambient temperature data and transmits the data to the remote start [equipment] of the BERKES equipment as a back-up.)

      1. Main body ECU (multiplex network body ECU)

      2. Air conditioning amplifier assembly

      		 - Nothing U0164

      Seat Memory System

      (Controls the seat position according to the operating conditions.)

      1. Front power seat switch RH

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

      • The power tilt and power telescopic steering column system and its memory and restoration functions do not operate.

      • The memorized seat position restoration, memory call and autoaway/return functions do not operate.

      		 Nothing -

      Pre-crash Safety System (Brake-linked Control)

      (Controls the seat belts and brakes during sudden braking or when the vehicle is uncontrollable.)

      1. Seat belt control ECU

      2. Master cylinder solenoid (skid control ECU), Center airbag sensor assembly

      		 Pre-crash safety system brake-linked control stops. The PCS indicator light blinks.

      • U0122

      • U0140

      • U0151

      Pre-crash Safety System (Millimeter wave radar sensor-linked control)

      (Controls the seat belts and brakes when a crash is unavoidable.)

      1. Seat belt control ECU

      2. Center airbag sensor assembly, Driving support ECU assembly

      		 Pre-crash safety system millimeter wave radar sensor-linked control stops. The PCS indicator light blinks.

      • U0140

      • U0151

      • U1104

      Meter Display Request

      (Requests indicator display on the combination meter upon reception of information indicating a malfunction in the seat belt control ECU or driving support ECU.)

      1. Seat belt control ECU

      2. Driving support ECU assembly

      		 Control stops. The PCS indicator light illuminates. -

      ACC

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

      1. Driving support ECU assembly

      2. ECM, Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Combination meter assembly, Main body ECU (multiplex network body ECU)

      		 The ACC system does not operate. The light blinks, a message indicating system cancellation is displayed and the buzzer sounds.

      • U0122

      • U0123

      • U0126

      • U1104

      Pre-crash Safety System

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

      1. Driving support ECU assembly

      2. Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Main body ECU (multiplex network body ECU), Combination meter assembly

      		 The pre-crash safety system does not operate. The light blinks and the buzzer sounds.

      • U0122

      • U0123

      • U0126

      • U1100

      • U1104

      Engine-related Indicators

      (The system estimates the oil deterioration level and the indicators on the meter indicate that an oil change is necessary, etc.)

      1. ECM

      2. Combination meter assembly

      • The indicator lights do not turn on.

      • The meter display cannot be cleared.

      		 The engine-related indicator lights do not turn on. -

      Electrical Load Control

      (Performs idle up according to the electrical load.)

      1. ECM

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

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

      Air Conditioning-linked Control

      (Performs idle up according to the compressor load.)

      1. ECM

      2. Power management control ECU, Air conditioning amplifier assembly

      		 Air conditioning-linked control does not operate. The air conditioning does not operate. -

      PTC Heater

      (Performs idle up according to requests from the PTC heater or heater system.)

      1. ECM

      2. ECM, Air conditioning amplifier assembly

      		 The PTC heater does not operate. The idle speed changes and heater performance deteriorates. -

      Charging Control

      (Performs idle up according to charging requests.)

      1. Power management control ECU

      2. ECM, Power management control ECU

      		 Idle up according to charging requests is not performed. Nothing -

      Eco Driving Indicator

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

      1. ECM

      2. Combination meter assembly

      • The indicator light does not turn on.

      • The display of all information stops.

      		 The eco driving indicator light does not turn on. -

      Integrated Control (VSC)

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

      1. ECM

      2. ECM, Master cylinder solenoid (skid control ECU), Spiral cable sub-assembly (steering angle sensor), Yaw rate sensor assembly, Driving support ECU assembly

      		 Integrated control is not performed. Nothing -

      ECT System Indicators

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

      1. ECM

      2. Combination meter assembly

      		 - ECT system indicator lights do not turn on. -

      AI-SHIFT Control

      (Controls the A/T in order to improve engine braking power and acceleration feeling.)

      1. ECM

      2. ECM, Master cylinder solenoid (skid control ECU)

      		 AI-SHIFT control does not operate. Nothing -

      Coast Downshift

      (Changes the coast downshift point based on the air conditioning load and performs upshift delay according to air conditioning or heater requests.)

      1. ECM

      2. ECM, Air conditioning amplifier assembly

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

      Cruise Control

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

      1. ECM

      2. ECM, Master cylinder solenoid (skid control ECU), Combination meter assembly, Driving support ECU assembly

      		 Cruise control does not operate. The CRUISE main indicator light blinks. -

      TC DTC Output Service

      (Outputs a DTC in response to a DTC output request from MET.)

      1. Combination meter assembly

      2. ECM, Center airbag sensor assembly

      		 The TC service function stops. Nothing -

      Event Data Recorder (EDR)

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

      1. Center airbag sensor assembly

      2. ECM, Combination meter assembly

      		 - Nothing -

      SRS Warning Light Control

      (Turns the warning light on/off.)

      1. Combination meter assembly

      2. Center airbag sensor assembly

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

      Collision Detection Signal (for Fuel-cut)

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

      1. ECM

      2. Center airbag sensor assembly

      		 The fuel-cut function used when a collision occurs is stopped. Nothing -

      Seat Belt Warning Light Control

      (Turns the seat belt warning light on/off.)

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

      2. Center airbag sensor assembly

      		 The seat belt warning light does not operate. Nothing -

      Pre-crash Seat Belt Control

      (Controls the seat belts when a crash is determined to be unavoidable, during sudden braking or when the vehicle is uncontrollable.)

      1. Seat belt control ECU

      2. Center airbag sensor assembly, Master cylinder solenoid (skid control ECU), Driving support ECU assembly, Main body ECU (multiplex network body ECU)

      		 The pre-crash seat belts do not operate. The PCS indicator light blinks.

      • U0122

      • U0140

      • U0151

      • U1104

      Multi-function Switch

      (Operates the clearance sonar and 2nd start switch using the steering switch.)

      1. Driving support switch control ECU

      2. Combination meter assembly, Headlight swivel ECU assembly (AFS ECU)

      		 - Nothing -

      Multi-terrain Select

      (Informs the user of the recommended vehicle state according to driving conditions.)

      1. Driving support switch control ECU

      2. ECM, Master cylinder solenoid (skid control ECU), Four wheel drive control ECU, Combination meter assembly

      • Mode switching is not possible.

      • The display of text messages in the meter display is not possible.

      		 Nothing -

      Parking Assist Monitor Switching

      (Changes the camera and image quality for the park assist monitor system.)

      1. Parking assist ECU

      2. Parking assist ECU

      Camera switching is not possible.

      Changing the brightness and contrast of the display is not possible.

      		 Nothing -

      Crawl Control Switch

      (Sends the crawl control switch information.)

      1. Driving support switch control ECU

      2. Master cylinder solenoid (skid control ECU)

      		 - Nothing -

      Push Start (Power Source Switching)

      (Changes the power source mode automatically based on the push start switch signal and commands the starter to operate when certain conditions are met.)

      1. Power management control ECU

      2. ECM

        Combination meter assembly, Main body ECU (multiplex network body ECU), Master cylinder solenoid (skid control ECU)

      		 Does not display the necessary starting operation commands. Nothing

      • U0100

      • U0129

      Engine start control

      (Prohibits and permits turning on the starter according to the vehicle state and start request signals.)

      1. Power management control ECU

      2. ECM

      		 - Nothing U0100

      Charging control

      (Changes the amount of voltage generated by the alternator according to the driving state of the vehicle and battery capacity.)

      1. Power management control ECU

      2. ECM

      		 - Nothing -