Lexus ES: Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE FUNCTION
(a) 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.
(b) The following table shows the effects on each system when communication is impossible. (For further details, see the pages for each system.)
| Function | Control Master (Main ECU to determine controls) | System Related | Fail-safe Operation | Driver Detectable | DTC Detection (ECU that stored DTC) |
|---|---|---|---|---|---|
| Anti-lock Brake System Control
| Brake actuator assembly | - | Only electric brake force distribution control is available. |
| U007488 (Brake actuator assembly) |
| Vehicle Stability Control
| Brake actuator assembly |
| Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. |
| U010087 U010187 U012587 U012687 (Brake actuator assembly) | |||
| Traction Control
| Brake actuator assembly |
| Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. |
| U010087 U010187 U012587 U012687 (Brake actuator assembly) | |||
| Hill-start Assist Control
| Brake actuator assembly |
| Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. |
| U010087 U010187 U012587 U012687 (Brake actuator assembly) | |||
| Pre-collision System
| Brake actuator assembly | Forward recognition camera | Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. | - | - | |||
| Dynamic Radar Cruise Control System
| Brake actuator assembly | ECM | Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. | - | - | |||
| Secondary Collision Control System
| Brake actuator assembly | Airbag ECU assembly | Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Secondary collision control system is disabled. | Displays messages on the multi-information display. | U015187 (Brake actuator assembly) | |||
| Intelligent Clearance Sonar System
| Brake actuator assembly | Clearance warning ECU assembly | Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. | - | - | |||
| Brake Hold Function
| Brake actuator assembly |
| Control stops. | Brake hold operated indicator light blinks. | U010087 U010187 U012587 U012687 U014087 (Brake actuator assembly) |
| Electric Parking Brake System (Drive Away Release Operation)
| Brake actuator assembly |
| Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. | Brake warning light / yellow illuminates. | U010087 U010187 U012587 U014087 (Brake actuator assembly) | |||
| Electric Parking Brake System (Shift Synchronized Operation)
| Brake actuator assembly | ECM | Only electric brake force distribution control is available. |
| U007487 (Brake actuator assembly) |
| Control stops. | Brake warning light / yellow illuminates. | U010087 U010187 (Brake actuator assembly) | |||
| Occupant Classification System
| Airbag ECU assembly | Occupant detection ECU | SRS components do not deploy. | SRS warning light illuminates. | U0154 (Airbag ECU assembly) |
| Occupant Detection | Occupant detection ECU |
| Sends signals indicating a malfunction to the airbag sensor assembly. | SRS warning light illuminates. | U0125 U0129 (Occupant detection ECU) |
| Vehicle Speed Display | Combination meter assembly | Brake actuator assembly | Speedometer is controlled based on a default vehicle speed of 0 km/h (0 mph). | - | U012987 (Combination meter assembly) |
| Tachometer Display | Combination meter assembly | ECM | Needle of tachometer remains at 0 rpm. | - | U010087 (Combination meter assembly) |
| Meter Display
| Combination meter assembly |
| Vehicle information is not displayed. | Abnormal light operation | U010087 U012987 U013187 U014087 U015187 U016387 U018287 U023A87 U110687 (Combination meter assembly) |
| Speedometer
| Meter mirror sub-assembly | Combination meter assembly |
| - | U015587 (Meter mirror sub-assembly) |
| Display Brightness Adjustment
| Meter mirror sub-assembly | Combination meter assembly | Maintains the latest state. | - | U015587 (Meter mirror sub-assembly) |
| Display Position Adjustment
| Meter mirror sub-assembly | Combination meter assembly | Maintains the latest state. | - | U015587 (Meter mirror sub-assembly) |
| Display Rotation Adjustment
| Meter mirror sub-assembly | Combination meter assembly | Displays the display using the default rotation. | - | U015587 (Meter mirror sub-assembly) |
| Tachometer
| Meter mirror sub-assembly | ECM | The tachometer in the headup display displays an engine speed of 0 rpm. | - | U010087 (Meter mirror sub-assembly) |
| Eco Driving Indicator
| Meter mirror sub-assembly | ECM | Stops displaying the ECO display. (ECO OFF) | - | U010087 (Meter mirror sub-assembly) |
| Road Sign Assist System
| Meter mirror sub-assembly | Forward recognition camera | Not displayed. | - | U023A87 (Meter mirror sub-assembly) |
| Ambient Temperature/Road Surface Ice Display
| Meter mirror sub-assembly | Air conditioning amplifier assembly | An error value is displayed. | - | U016487 (Meter mirror sub-assembly) |
| Pre-collision System
| Meter mirror sub-assembly | Forward recognition camera | Not displayed. | - | U023A87 (Meter mirror sub-assembly) |
| Dynamic Radar Cruise Control System
| Meter mirror sub-assembly | ECM | Not displayed. | - | U010087 (Meter mirror sub-assembly) |
| Lane Departure Alert System
| Meter mirror sub-assembly | Forward recognition camera | Not displayed. | - | U023A87 (Meter mirror sub-assembly) |
| Intelligent Clearance Sonar System
| Meter mirror sub-assembly | Clearance warning ECU assembly | Not displayed. | - | U111087 (Meter mirror sub-assembly) |
| Information
| Meter mirror sub-assembly | Combination meter assembly | Not displayed. | - | U015587 (Meter mirror sub-assembly) |
| Lane Trace Control System
| Meter mirror sub-assembly | Forward recognition camera | Not displayed. | - | U023A87 (Meter mirror sub-assembly) |
| Display Customization
| Meter mirror sub-assembly | Combination meter assembly | Not displayed. | - | U015587 (Meter mirror sub-assembly) |
| Air Conditioning Control
| Air conditioning amplifier assembly | ECM | Control is performed based on default coolant temperature of 80°C (176°F). | - | U0100 (Air conditioning amplifier assembly) |
| Compressor Control
| Air conditioning amplifier assembly | ECM | Control is performed based on default engine speed of 0 rpm. | - | U0100 (Air conditioning amplifier assembly) |
| Simple Load Control
| Air conditioning amplifier assembly | Rack and pinion power steering gear assembly | While the engine switch is on (IG), previous values are maintained (during a reset, there is no load control). | - | U0131 (Air conditioning amplifier assembly) |
| Panel Control
| Air conditioning amplifier assembly | Radio receiver assembly | Air conditioning system operation state cannot be changed. | - | U0163 (Air conditioning amplifier assembly) |
| Panel Dimming Control
| Air conditioning amplifier assembly | Main body ECU (multiplex network body ECU) | While the engine switch is on (IG), previous values are maintained (during a reset, dimming control is performed). | - | U0142 (Air conditioning amplifier assembly) |
| Destination Determination Control
| Air conditioning amplifier assembly | Main body ECU (multiplex network body ECU) | While the engine switch is on (IG), previous values are maintained. | - | U0142 (Air conditioning amplifier assembly) |
| Ambient Temperature Correction Control
| Air conditioning amplifier assembly | Combination meter assembly | Control is performed based on default vehicle speed of 0 km/h (0 mph). | - | U0155 (Air conditioning amplifier assembly) |
| Entry Function
|
|
|
| - | U0100 U0142 U0155 (Certification ECU (smart key ECU assembly)) |
| Wireless Function
| Main body ECU (multiplex network body ECU) |
| Wireless lock/unlock functions and luggage compartment opener can be operated when the engine switch is on (IG). | - | U0142 (Certification ECU (smart key ECU assembly)) |
| Security Indicator Display Function
| Certification ECU (smart key ECU assembly) |
| Security condition cannot display normally (illuminates during security warning preparation/security warning). | - | U0142 (Certification ECU (smart key ECU assembly)) |
| Engine Start/Stop Switch (Power Source Mode Change)
| Certification ECU (smart key ECU assembly) |
| - |
| U0100 U0140 U0155 (Certification ECU (smart key ECU assembly)) |
| Electric Load Control
| ECM |
| Idle up according to electric load is not performed. | Engine idle speed changes. | - |
| Air Conditioning Cooperative Operation
| ECM | Air conditioning amplifier assembly | Air conditioning system does not use cooperative controls. (Idle up is not performed.) | Air conditioning system does not operate. | - |
| PTC Heater
| ECM | Air conditioning amplifier assembly | PTC heater does not operate. |
| - |
| Charge Control
| ECM |
|
| Taillights flicker and blower airflow changes. | - |
| Sprung Mass Damping Control
| ECM | Brake actuator assembly |
| - | - |
| Integrated Control (VDM)
| 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, driveability, acceleration performance and acceleration feeling are not improved. | - | - |
| Eco Control
| ECM | Air conditioning amplifier assembly | Eco mode does not operate. | - | - |
| Cruise Control
| ECM | Brake actuator assembly | Cruise control does not operate. | - | U012287 (ECM) |
| Dynamic Radar Cruise Control System
| ECM |
| Dynamic radar cruise control does not operate. | Displays messages on the multi-information display. | U010087 U010487 U012287 (ECM) |
| Blind Spot Monitor Control
| Blind spot monitor sensor RH |
| - | Displays messages on the multi-information display. | U0100 U0125 U0126 U0129 U0142 U0232 U1331 (Blind spot monitor sensor RH) |
| Automatic High Beam System
| Forward recognition camera |
| Performs control based on the signals received before the malfunction occurred. | Displays messages on the multi-information display. | U010087 U012587 U012987 U014087 U023587 (Forward recognition camera) |
| Forward Recognition Camera System
| Forward recognition camera |
|
| - | U010087 U012587 U012687 U012987 U014087 (Forward recognition camera) |
| Lane Tracing Assist System
| Forward recognition camera |
| Control stops. |
| U010087 U012587 U012687 U012987 U013187 U015587 U023587 U030051 U030057 (Forward recognition camera) |
| Pre-collision System
| Forward recognition camera |
| Pre-collision alarm function, pre-collision brake assist function and pre-collision brake function are canceled. |
| U010087 U012587 U012687 U012987 U023587 U023A87 U030051 U030057 U041881 (Forward recognition camera) |
| Road Sign Assist System
| Forward recognition camera |
| Control stops. | Displays messages on the multi-information display. | U010087 U012587 U012987 U014087 U015587 (Forward recognition camera) |
| Dynamic Radar Cruise Control System
| Forward recognition camera |
| Control stops. | Displays messages on the multi-information display. | U010087 U012587 U012687 U012987 U015587 U110687 (Forward recognition camera) |
| Pre-collision System
| Millimeter wave radar sensor assembly | Forward recognition camera | Recognition processing is stopped. | Displays messages on the multi-information display. | U010487 (Millimeter wave radar sensor assembly) |
| Power Steering Control
| Rack and pinion power steering gear assembly |
|
| EPS warning light illuminates. | U0100 U0129 (Rack and pinion power steering gear assembly) |
| Assist Map Selection
| Rack and pinion power steering gear assembly |
| Default map is used to assist because proper assist map cannot be selected. (Steering feel may be different.) | EPS warning light illuminates. | C1581 (Rack and pinion power steering gear assembly) |
| Lane Tracing Assist System
| Rack and pinion power steering gear assembly |
| Control stops. | - | U023A (Rack and pinion power steering gear assembly) |
| Auto Location
| Tire pressure warning ECU and receiver | Brake actuator assembly | Auto Location function is prohibited. | - | U0129 (Tire pressure warning ECU and receiver) |
| Door Lock
| Main body ECU (multiplex network body ECU) | Airbag ECU assembly | Key linked door lock/unlock function is performed even when the engine switch is on (IG) and the driver seatbelt is fastened. | - | U0151 (Main body ECU (multiplex network body ECU)) |
| Shift-linked Automatic Door Lock Function
| Main body ECU (multiplex network body ECU) | ECM | All of the doors are not locked automatically when all of the following conditions are met.
| - | U0101 (Main body ECU (multiplex network body ECU)) |
| Shift-linked Automatic Door Unlock Function
| Main body ECU (multiplex network body ECU) |
| All of the doors are not locked automatically when all of the following conditions are met.
| - | U0101 U0155 (Main body ECU (multiplex network body ECU)) |
| Speed-sensitive Automatic Door Lock Function
| Main body ECU (multiplex network body ECU) | Combination meter assembly | All of the doors are not locked automatically when all of the following conditions are met.
| - | U0155 (Main body ECU (multiplex network body ECU)) |
| Manual Unlock Prohibition Function
| Main body ECU (multiplex network body ECU) | ECM | The manual unlock prohibition cannot be canceled when the engine has been started. | - | U0100 (Main body ECU (multiplex network body ECU)) |
| Power Door Lock Control System Customize Setting
| Main body ECU (multiplex network body ECU) | ECM |
| - | U0101 (Main body ECU (multiplex network body ECU)) |
| Wireless Function
| Main body ECU (multiplex network body ECU) |
| The doors cannot be locked or unlocked via remote operation. | - | U1117 (Main body ECU (multiplex network body ECU)) |
| Entry Lock/Unlock
| Main body ECU (multiplex network body ECU) |
| The doors cannot be locked or unlocked via remote operation. | - | U0327 U1117 (Main body ECU (multiplex network body ECU)) |
| Wireless Door Lock Buzzer
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | The wireless door lock buzzer does not sound when the doors are locked/unlocked by wireless operation. | - | U0327 (Main body ECU (multiplex network body ECU)) |
| Seat and Mirror Control | Main body ECU (multiplex network body ECU) |
| Memory function does not operate. | - | U0155 U0199 U0200 U0208 U0327 U1106 U1115 (Main body ECU (multiplex network body ECU)) |
| Luggage Compartment Door Opener System
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | When the luggage electrical key switch is pushed and held with the luggage compartment door locked, the luggage compartment door does not unlatch. | - | U0327 (Main body ECU (multiplex network body ECU)) |
| Luggage Compartment Door Opener System
| Main body ECU (multiplex network body ECU) |
| When the luggage door opening switch assembly is pushed and held, the luggage compartment door does not unlatch. | - | U0101 U0155 (Main body ECU (multiplex network body ECU)) |
| Dome Lights
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | The interior lights remain off when the electrical key transmitter sub-assembly is close to any of the doors. | - | U0327 (Main body ECU (multiplex network body ECU)) |
| Dimmer Controlled Illumination
| Main body ECU (multiplex network body ECU) | ECM | The interior lights remain on without being dimmed when the shift state is park (P) and a shift state other than park (P) is selected. | - | U0101 (Main body ECU (multiplex network body ECU)) |
| Alarm Function
| Main body ECU (multiplex network body ECU) |
|
| - | U0100 U0120 U1117 (Main body ECU (multiplex network body ECU)) |
| Battery Saving Function
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | When the battery is in battery saving mode and any of the doors are approached while holding an entry key, the battery saving function is not canceled and the interior illuminations do not illuminate. | - | U0327 (Main body ECU (multiplex network body ECU)) |
| Interior Light Auto Cut Function
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | The headlights do not turn off when the lock switch of the electrical key transmitter sub-assembly is pressed with all of the doors locked when the interior light auto cut function is being performed. | - | - |
| Headlight System Malfunction Warning Display
| Main body ECU (multiplex network body ECU) | ECM | When an LED headlight malfunction is detected, the LED headlight warning display is not displayed when the low beam headlights are turned on when the engine has been started. | - | U0100 (Main body ECU (multiplex network body ECU)) |
| Meter Illumination Auto Dimmer
| Main body ECU (multiplex network body ECU) | Combination meter assembly | The meter illumination is dimmed when the tail cancel switch is on. | - | U0155 (Main body ECU (multiplex network body ECU)) |
| Key Off Operation
| Main body ECU (multiplex network body ECU) | ECM | The engine speed is set to 0. | Even though the engine is started, power window operation is not permitted. | U0100 (Main body ECU (multiplex network body ECU)) |
| Headlights Left Off Warning
| Main body ECU (multiplex network body ECU) | Combination meter assembly | The suggestion that the driver turns the headlights on is not displayed on the multi-information display in the combination meter assembly when the headlight dimmer switch is OFF or TAIL while driving at night. | - | U0155 (Main body ECU (multiplex network body ECU)) |
| Automatic High Beam System
| Main body ECU (multiplex network body ECU) |
| Automatic high beam system does not operate. | Displays messages on the multi-information display. | U0182 U023A (Main body ECU (multiplex network body ECU)) |
| Air Conditioning Control
| Radio receiver assembly | Air conditioning amplifier assembly | Air conditioning system indicators turn off. | Displays messages on the multi-display. | U0073 U0164 (Radio receiver assembly) |
| Destination Identification
| Radio receiver assembly | Main body ECU (multiplex network body ECU) | Determines the destination according to the last received value and operates accordingly (if there is no last received value, the system operates using the default value). | Time zone and language selection screen are different from actual destination. | U0073 U0140 (Radio receiver assembly) |
| Vehicle Customize Function
| Radio receiver assembly |
|
| - | U0073 (Radio receiver assembly) |
| Rear View Monitor System
| Radio receiver assembly | ECM | Screen does not change to the camera screen. | - | - |
| Back Guide Monitor Function
| Radio receiver assembly |
|
| - | U0073 U0265 (Radio receiver assembly) |
| Meter-linked Function
| Radio receiver assembly | Combination meter assembly |
| - | U0073 U0155 (Radio receiver assembly) |
| Information Sound Adjustment Function
| Radio receiver assembly | Forward recognition camera | Audio mute is canceled. | - | U0073 (Radio receiver assembly) |
| Intuitive Parking Assist System Setting/Notification
| Radio receiver assembly | Clearance warning ECU assembly | Transitions to the previous screen. | - | U0073 U1110 (Radio receiver assembly) |
| Panoramic View Monitor | Radio receiver assembly |
|
| - | U0073 U023B (Radio receiver assembly) |
| Back Guide Monitor Function
| Rear television camera assembly |
|
| "!" is displayed on the camera screen. | U0100 U0126 U0140 U0163 U0233 U1000 U1110 (Rear television camera assembly) |
| Rear Camera Detection Function
| Rear television camera assembly |
| Control stops. | Displays messages on the multi-information display. | U0100 U0126 U0129 U0140 U0233 U023B U1000 U1110 (Rear television camera assembly) |
| Panoramic View Monitor
| Parking assist ECU |
|
|
| U0073 U0100 U0126 U0129 U0140 U0163 U0233 U0265 U1000 U1110 (Parking assist ECU) |
| Ambient Temperature Data (Display) (Corrects the distance measured by ultrasonic waves.) | Clearance warning ECU assembly | Air conditioning amplifier assembly | - | - | U0164 (Clearance warning ECU assembly) |
| Display Dimmer Signal, Each Door Courtesy Switch Signal, Driver Seat Buckle Switch Signal and Parking Brake Switch Signal | Clearance warning ECU assembly | Main body ECU (multiplex network body ECU) | - | - | U0140 (Clearance warning ECU assembly) |
| Destination Determination Function
| Clearance warning ECU assembly | Main body ECU (multiplex network body ECU) | It operates according to previous EEPROM values when a communication stop occurs. | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0140 (Clearance warning ECU assembly) |
| RCTBSTAT Installation Direction of Master Module Master Radar Signal Reception Flag Slave Radar Signal Reception Flag (Is used for RCTAB control.) | Clearance warning ECU assembly | Blind spot monitor sensor RH | Only RCTAB control is stopped (ICS operates). | - | U0233 (Clearance warning ECU assembly) |
| Target ID (Is used for RCTAB control.) | Clearance warning ECU assembly |
| Only RCTAB control is stopped (ICS operates). | - | U0232 U0233 (Clearance warning ECU assembly) |
| RCTA Warning Information (Is used for RCTAB control.) | Clearance warning ECU assembly |
| Only RCTAB control is stopped (ICS operates). | - | U0232 U0233 (Clearance warning ECU assembly) |
| New Target (Is used for RCTAB control.) | Clearance warning ECU assembly |
| Only RCTAB control is stopped (ICS operates). | - | U0232 U0233 (Clearance warning ECU assembly) |
| Extrapolation State Ghosting Possibility X Half Width Radar Reflection Cross Section Area Relative Distance X, Y Relative Speed VX, VY (Is used for RCTAB control.) | Clearance warning ECU assembly | Blind spot monitor sensor RH | Only RCTAB control is stopped (ICS operates). | - | U0232 U0233 (Clearance warning ECU assembly) |
| Shift Position Signal (Is used as an operation condition for the app.) | Clearance warning ECU assembly | ECM | Changes to an operation state which is used when the shift lever is in P. | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| Engine Model Information
| Clearance warning ECU assembly | ECM | It operates according to previous EEPROM values when a communication stop occurs. | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| Engine Control State Information
| Clearance warning ECU assembly | ECM | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| During CSR Request Operation G (Is used as an operation condition for the app.) | Clearance warning ECU assembly | ECM | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| Cruise Control Information (Is used as an operation condition for the app.) | Clearance warning ECU assembly | ECM | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| Accelerator Opening Angle Percentage (Is used as an operation condition for the app.) | Clearance warning ECU assembly | ECM | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0100 (Clearance warning ECU assembly) |
| Clearance Sonar Main Switch Information
| Clearance warning ECU assembly | Combination meter assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0155 (Clearance warning ECU assembly) |
| Clearance Sonar Buzzer Mute/Volume Change (Is used as an operation condition for the clearance warning ECU assembly.) | Clearance warning ECU assembly | Combination meter assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0155 (Clearance warning ECU assembly) |
| Data Continuity (Valid/Invalid) Flag +B Open Circuit Malfunction Sensor Malfunction Steering Angle Signal Sensor Internal Zero Point Memorization Invalid/Valid Steering Angle Sensor Internally Memorized Zero Point Value Steering Angle Sensor Calculated Value (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Steering sensor | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0126 (Clearance warning ECU assembly) |
| Discontinuous Generation Display Flag VGRS Setting Availability Information (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Steering sensor | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0126 (Clearance warning ECU assembly) |
| Wheel Speed Information (The wheel speed signal from each wheel (after 1/2 filter) is used to calculate the vehicle speed.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Wheel Speed Sensor State Information, Wheel Speed Calculated Value (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Master Cylinder Pressure Malfunction Flag Master Cylinder Pressure Invalid Flag Master Cylinder Pressure BA Fail Signal STP Switch Signal During VSC Control STP Switch Open Circuit Signal During ABS Control (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| TRAC Operating Flag (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Brake Control State Signal (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Yaw Rate Sensor State Signal (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Speed Information Signal for Each Wheel (Calculates the amount of movement.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| VSC OFF, TRAC OFF Indicator (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Brake actuator assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0129 (Clearance warning ECU assembly) |
| Yaw Rate Sensor State Signal (Is used as an operation condition for the app.) | Clearance warning ECU assembly | Airbag ECU assembly | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | App stops operating (displays a warning message in the combination meter and sounds the buzzer). | U0124 (Clearance warning ECU assembly) |
| Mirror Operation Control
|
| Main body ECU (multiplex network body ECU) | Manual mirror operation is prohibited. | - | U0142 (Outer mirror control ECU assembly LH) (Outer mirror control ECU assembly RH) |
| Mirror Heater Control
|
|
| Mirror heaters do not operate. | - | U0142 (Outer mirror control ECU assembly LH) (Outer mirror control ECU assembly RH) |
| Mirror Retract/Return Operation
|
| Main body ECU (multiplex network body ECU) | Mirrors cannot be retracted or returned. | - | - |
| Reverse-shift Linked Door Mirror Operation
|
| Main body ECU (multiplex network body ECU) | Reverse-shift linked door mirror function does not operate. | - | - |
| Mirror Surface Position Memory and Recall
|
| Main body ECU (multiplex network body ECU) | Mirror surface position cannot be memorized or recalled. | - | - |
| Auto Away Function
| Multiplex tilt and telescopic ECU |
| Control is suspended (manual operation is still possible). | - | U014287 U015587 (Multiplex tilt and telescopic ECU) |
| Auto Return Function
| Multiplex tilt and telescopic ECU |
| Control is suspended (manual operation is still possible). | - | U014287 U015587 (Multiplex tilt and telescopic ECU) |
| Memory Function
| Multiplex tilt and telescopic ECU |
| Control is suspended (manual operation is still possible). | - | U014287 U015587 U020887 (Multiplex tilt and telescopic ECU) |
| AVS Control
| Absorber control ECU | ECM |
| - | U0100 U0101 (Absorber control ECU) |
| Brake actuator assembly | Maintains the fail-safe damping force. | - | U0122 (Absorber control ECU) | ||
| Control other than roll control is continued. | - | U0124 U0126 (Absorber control ECU) | ||
| Memory Seat Playback Control
| Position control ECU assembly LH | Main body ECU (multiplex network body ECU) | Control stops. | - | - |
| Away/Return Control
| Position control ECU assembly LH | Main body ECU (multiplex network body ECU) | Control stops. | - | - |
| Active Noise Control
| Stereo component equalizer assembly |
| The effective volume of active noise control system is controlled or the function is stopped. | - | U010087 U012987 U014087 U016487 (Stereo component equalizer assembly) |
| Lighting On/Off
|
| Main body ECU (multiplex network body ECU) |
| Displays messages on the multi-information display. | U0142 (Headlight ECU sub-assembly LH) (Headlight ECU sub-assembly RH) |
| Cornering Light Control
|
| Combination meter assembly | Stops cornering light control (cornering light turns off). | - | U0155 (Headlight ECU sub-assembly LH) |
| Power Trunk Lid Automatic Open/Close Function
| Luggage closer motor assembly |
|
| - | U0101 U0122 U0142 U0155 U0327 U1117 (Luggage closer motor assembly) |
| Luggage Compartment Closer Function
| Luggage closer motor assembly |
| The function cannot reverse operation during the closer operation. | - | U0101 U0122 U0142 U0155 U0327 U1117 (Luggage closer motor assembly) |
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Dtc Check / Clear
DTC CHECK / CLEAR CHECK FOR DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Central Gateway
Dtc Combination Table
DTC COMBINATION TABLE HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U) (a) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs sto
Diagnosis System
DIAGNOSIS SYSTEM CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION (a) The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equi
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Inspection
INSPECTION PROCEDURE 1. INSPECT ACCELERATION SENSOR ASSEMBLY (a) Connect 3 1.5 V dry cell batteries in series. (b) Connect a positive (+) lead from the batteries to terminal 3 and a negative (-) lead to terminal 2. (c) Measure the voltage according to the value(s) in the table below. Standard Voltag
Hybrid/EV Battery Precharge Contactor Actuator Stuck Closed (P0AE173)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects a stuck closed malfunction of a precharge relay stuck malfunction on the HV battery negative side. The cause of this malfunction may be one of the following: Inverter voltage sensor (VH) internal circuit malfunction
Voltag
