Problem Symptoms Table [08/2019 - ]
NOTE:
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Refer to REGISTRATION [08/2019 - 07/2021] , or refer to REGISTRATION [07/2021 - ]
- If the No. 1 headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.
Refer to INITIALIZATION [08/2019 - 07/2020] , or refer to INITIALIZATION [07/2020 - ]
- If the headlight assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.*
Refer to INITIALIZATION [08/2019 - 07/2020] , or refer to INITIALIZATION [07/2020 - ]
- When replacing the No. 1 headlight ECU sub-assembly LH, always replace it with a new one. If a No. 1 headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- When replacing the headlight assembly LH, always replace it with a new one. If a headlight assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.*
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- *: for TMMC Made
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
HEADLIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left low beam headlight does not illuminate | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit LH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly LH*2 | Refer to REMOVAL [08/2019 - ] | |
| Right low beam headlight does not illuminate | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit RH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly RH*2 | Refer to REMOVAL [08/2019 - ] | |
| Both left and right low beam headlights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Left high beam headlight does not illuminate | High beam headlight circuit | Refer to High Beam Headlight Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] | |
| Right high beam headlight does not illuminate | High beam headlight circuit | Refer to High Beam Headlight Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] | |
| Both left and right high beam headlights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| High Flash (passing function) does not operate (high beam headlights are normal) | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Left low beam headlight and high beam headlight do not illuminate | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Right low beam headlight and high beam headlight do not illuminate | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
| Left low beam headlight and high beam headlight flicker | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Right low beam headlight and high beam headlight flicker | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
- *1: for TMC Made
- *2: for TMMC Made
PARKING LIGHT/DAYTIME RUNNING LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left parking light/daytime running light does not illuminate | Parking light/daytime running light circuit | Refer to Parking Light/Daytime Running Light Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] | |
| Right parking light/daytime running light does not illuminate | Parking light/daytime running light circuit | Refer to Parking Light/Daytime Running Light Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] | |
| Both left and right parking lights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Both left and right daytime running lights do not illuminate | Check customize settings | Refer to CUSTOMIZE PARAMETERS [08/2019 - ] |
| Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Left parking light/daytime running light flicker | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Right parking light/daytime running light flicker | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
CORNERING LIGHT (W/ FRONT FOG LIGHT)
| Symptom | Suspected Area | Link |
|---|---|---|
| Left cornering light does not illuminate | Check operating conditions | Refer to OPERATION CHECK [08/2019 - 07/2020] , or refer to OPERATION CHECK [07/2020 - ] |
| Cornering light circuit | Refer to Cornering Light Circuit [08/2019 - ] | |
| No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] | |
| Right cornering light does not illuminate | Check operating conditions | Refer to OPERATION CHECK [08/2019 - 07/2020] , or refer to OPERATION CHECK [07/2020 - ] |
| Cornering light circuit | Refer to Cornering Light Circuit [08/2019 - ] | |
| No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] | |
| Left cornering light flicker | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Right cornering light flicker | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
FRONT SIDE MARKER LIGHT (W/ FRONT SIDE MARKER LIGHT)
| Symptom | Suspected Area | Link |
|---|---|---|
| Left front side marker light does not illuminate | Front side marker light circuit | Refer to Front Side Marker Light Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] | |
| Right front side marker light does not illuminate | Front side marker light circuit | Refer to Front Side Marker Light Circuit [08/2019 - ] |
| No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] | |
| Both left and right front side marker lights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Left front side marker light flicker | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Right front side marker light flicker | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
TAILLIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right taillight (rear combination light assembly) does not illuminate | Rear combination light assembly (w/ Rear No. 2 Seat) | Refer to INSPECTION [03/2018 - ] |
| Rear combination light assembly (w/o Rear No. 2 Seat) | Refer to INSPECTION [10/2015 - ] | |
| Rear light cord (w/ Rear No. 2 Seat)* | Refer to DISASSEMBLY [08/2019 - ] | |
| Rear light cord (w/o Rear No. 2 Seat)* | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| Left or right taillight (rear light assembly) does not illuminate | Rear light assembly | Refer to INSPECTION [10/2015 - ] |
| Rear light socket and wire | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| All of the taillights, license plate lights and rear side marker lights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Taillight relay circuit | Refer to Taillight Relay Circuit [08/2019 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
- *: for Bulb Type Turn Signal Light
REAR SIDE MARKER LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right rear side marker light does not illuminate | Rear combination light assembly (w/ Rear No. 2 Seat) | Refer to INSPECTION [03/2018 - ] |
| Rear combination light assembly (w/o Rear No. 2 Seat) | Refer to INSPECTION [10/2015 - ] |
LICENSE PLATE LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| License plate light does not illuminate | License plate light assembly | Refer to INSPECTION [10/2015 - ] |
| Harness or connector | - |
STOP LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right stop light (rear combination light assembly) does not illuminate | Rear combination light assembly (w/ Rear No. 2 Seat) | Refer to INSPECTION [03/2018 - ] |
| Rear combination light assembly (w/o Rear No. 2 Seat) | Refer to INSPECTION [10/2015 - ] | |
| Rear light cord (w/ Rear No. 2 Seat)* | Refer to DISASSEMBLY [08/2019 - ] | |
| Rear light cord (w/o Rear No. 2 Seat)* | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| Left or right stop light (rear light assembly) does not illuminate | Rear light assembly | Refer to INSPECTION [10/2015 - ] |
| Rear light socket and wire | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| All of the stop lights do not illuminate | STOP fuse | - |
| Stop light switch assembly | Refer to ON-VEHICLE INSPECTION [10/2015 - ] | |
| Semiconductor power integration ECU | Refer to REMOVAL [08/2019 - ] | |
| Harness or connector | - |
- *: for Bulb Type Turn Signal Light
HIGH MOUNTED STOP LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| High mounted stop light does not illuminate | Center stop light assembly | Refer to INSPECTION [10/2015 - ] |
| Harness or connector | - |
FRONT FOG LIGHT (W/ FRONT FOG LIGHT)
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right front fog light does not illuminate | Fog light assembly | Refer to INSPECTION [08/2019 - ] |
| Harness or connector | - | |
| Both left and right front fog lights do not illuminate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Front fog light circuit | Refer to Front Fog Light Circuit [08/2019 - ] | |
| Taillight relay circuit | Refer to Taillight Relay Circuit [08/2019 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
BACK-UP LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right back-up light does not illuminate | Rear light assembly *1 | Refer to INSPECTION [10/2015 - ] |
| Back-up light bulb *2 | Refer to REPLACEMENT [10/2015 - ] | |
| Rear light socket and wire | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| Both left and right back-up lights do not illuminate | Back-up light circuit | Refer to Back-up Light Circuit [08/2019 - ] |
- *1: for LED Type Back-up Light
- *2: for Bulb Type Back-up Light
TURN SIGNAL LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Left or right front turn signal light does not operate *1 | No. 1 headlight ECU sub-assembly | Refer to REMOVAL [08/2019 - ] |
| Headlight unit *3 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly *4 | Refer to REMOVAL [08/2019 - ] | |
| Harness or connector | - | |
| Left or right front turn signal light does not operate *2 | Front turn signal light bulb | Refer to REPLACEMENT [08/2019 - ] |
| Headlight unit *3 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly *4 | Refer to REMOVAL [08/2019 - ] | |
| No. 1 headlight ECU sub-assembly | Refer to REMOVAL [08/2019 - ] | |
| Harness or connector | - | |
| Left or right rear turn signal light does not operate *5 | Rear combination light assembly (w/ Rear No. 2 Seat) | Refer to INSPECTION [03/2018 - ] |
| Rear combination light assembly (w/o Rear No. 2 Seat) | Refer to INSPECTION [10/2015 - ] | |
| Rear light assembly | Refer to INSPECTION [10/2015 - ] | |
| Rear light socket and wire | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| Turn signal light circuit | Refer to Turn Signal Light Circuit [08/2019 - ] | |
| Left or right rear turn signal light does not operate *6 | Rear turn signal light bulb | Refer to REPLACEMENT [08/2019 - ] |
| Rear light cord (w/ Rear No. 2 Seat) | Refer to DISASSEMBLY [08/2019 - ] | |
| Rear light cord (w/o Rear No. 2 Seat) | Refer to DISASSEMBLY [08/2019 - ] | |
| Harness or connector | - | |
| Left or right side turn signal light does not operate | Side turn signal light assembly | Refer to INSPECTION [10/2015 - ] |
| Outer rear view mirror assembly | Refer to REMOVAL [10/2015 - ] | |
| Outer mirror control ECU assembly | Refer to REMOVAL [10/2015 - ] | |
| Harness or connector | - | |
| Turn signal lights do not operate in one direction | Turn signal switch circuit | Refer to Turn Signal Switch Circuit [08/2019 - ] |
| Meter/gauge system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] | |
| All turn signal lights do not operate | Turn signal switch circuit | Refer to Turn Signal Switch Circuit [08/2019 - ] |
| Combination meter assembly | Refer to REMOVAL [08/2019 - ] | |
| All turn signal lights do not flash at the correct speed | Combination meter assembly | Refer to REMOVAL [08/2019 - ] |
- *1: for Multiple Beam Headlight
- *2: for Single Beam Headlight
- *3: for TMC Made
- *4: for TMMC Made
- *5: for LED Type Turn Signal Light
- *6: for Bulb Type Turn Signal Light
HAZARD WARNING SIGNAL LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Hazard warning signal lights do not operate (turn signal lights are normal) | Hazard warning switch circuit | Refer to Hazard Warning Switch Circuit [08/2019 - ] |
| Combination meter assembly | Refer to REMOVAL [08/2019 - ] | |
| Hazard warning signal switch do not flash | Harness or connector | - |
| Hazard warning signal switch (radio receiver assembly) | Refer to REMOVAL [08/2019 - ] | |
| Combination meter assembly | Refer to REMOVAL [08/2019 - ] |
AUTOMATIC LIGHT CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Automatic light control system does not operate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
LIGHT AUTO TURN-OFF SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Light auto turn-off system does not operate | Headlight dimmer switch circuit | Refer to Headlight Dimmer Switch Circuit [08/2019 - 07/2020] , or refer to Headlight Dimmer Switch Circuit [07/2020 - ] |
| IG signal circuit | Refer to IG Signal Circuit [10/2015 - ] | |
| Door courtesy switch circuit | Refer to Door Courtesy Switch Circuit [10/2015 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
REMOTE OPERATION FUNCTION (W/ TELEMATICS SYSTEM)
| Symptom | Suspected Area | Link |
|---|---|---|
| Lights do not operate using remote operation function (Lighting system is normal) | Telematics system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
WIPER-LINKED LOW BEAM HEADLIGHT CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Wiper-linked low beam headlight control system does not operate | Check customize settings | Refer to CUSTOMIZE PARAMETERS [08/2019 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
OUTSIDE HANDLE FOOT LIGHT CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| All of the outside handle foot lights do not illuminate | Check customize settings | Refer to CUSTOMIZE PARAMETERS [08/2019 - ] |
| Power door lock control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] | |
| Wireless door lock control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] | |
| Smart access system with push-button start (for entry function) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [10/2015 - ] | |
| Outside handle foot light circuit | Refer to Outside Handle Foot Light Circuit [08/2019 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Left or right outside handle foot light does not illuminate | Front door outside handle assembly | Refer to INSPECTION [10/2015 - ] |
| Rear door outside handle assembly | Refer to INSPECTION [10/2015 - ] | |
| Harness or connector | - |
WELCOME LIGHT ILLUMINATION CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| Welcome light illumination control does not operate | Check customize settings | Refer to CUSTOMIZE PARAMETERS [08/2019 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] |
AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Automatic headlight beam level control system does not operate (Left Headlight) | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit LH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly LH*2 | Refer to REMOVAL [08/2019 - ] | |
| Automatic headlight beam level control system does not operate (Right Headlight) | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit RH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly RH*2 | Refer to REMOVAL [08/2019 - ] | |
| Initialization cannot be performed | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
| No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
- *1: for TMC Made
- *2: for TMMC Made
AFS (W/ AFS)
| Symptom | Suspected Area | Link |
|---|---|---|
| AFS control does not operate (Left Headlight) | No. 1 headlight ECU sub-assembly LH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit LH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly LH*2 | Refer to REMOVAL [08/2019 - ] | |
| AFS control does not operate (Right Headlight) | No. 1 headlight ECU sub-assembly RH | Refer to REMOVAL [08/2019 - ] |
| Headlight unit RH*1 | Refer to DISASSEMBLY [08/2019 - ] | |
| Headlight assembly RH*2 | Refer to REMOVAL [08/2019 - ] |
- *1: for TMC Made
- *2: for TMMC Made
AUTOMATIC HIGH BEAM SYSTEM (W/ AUTOMATIC HIGH BEAM SYSTEM)
| Symptom | Suspected Area | Link |
|---|---|---|
| Automatic high beam system does not operate or automatic high beam indicator light does not illuminate (low beam headlights and high beam headlights are normal) | Front radar sensor system | Refer to Automatic High Beam System does not Operate or Operation Indicator does not Illuminate [08/2019 - 07/2020] , or refer to Automatic High Beam System does not Operate or Operation Indicator does not Illuminate [07/2020 - ] |
| Check Data List (Front Recognition Camera High Temperature 2) | ||
| Check automatic high beam indicator light | ||
| Check Data List (Auto H Beam STS0) | ||
| Perform Active Test (Automatic High Beam Indicator) | ||
| Automatic high beam switch | ||
| Harness or connector | ||
| Combination meter assembly | ||
| Forward recognition camera | ||
| Main body ECU (Multiplex network body ECU) |