RM38T0EC _59 Vehicle Exterior _112294 LIGHTING (EXT) _0510962 LIGHTING SYSTEM T

LIGHTING (EXT)  LIGHTING SYSTEM  PROBLEM SYMPTOMS TABLE  


NOTICE:
·

Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Service Bulletin.*1

*1: w/ Smart Entry and Start System


·

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.

·

When replacing the combination meter assembly, update the ECU security key.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>UPDATE ECU SECURITY KEY



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 Refer to "LO-beam Headlight does not Illuminate" Click here
Right low beam headlight does not illuminate Refer to "LO-beam Headlight does not Illuminate" Click here
Both left and right low beam headlights do not illuminate Headlight dimmer switch circuit Click here
CAN communication system*3 Click here
CAN communication system*4 Click here
Main body ECU (Multiplex network body ECU) Click here
Left high beam headlight does not illuminate Headlight blub*1 Click here
Headlight unit assembly LH*2 Click here
Harness or connector -
Right high beam headlight does not illuminate Headlight blub*1 Click here
Headlight unit assembly*2 Click here
Harness or connector -
Both left and right high beam headlights do not illuminate High Beam Headlight Circuit Click here
Harness or connector -
Headlight dimmer switch circuit Click here
Main body ECU (Multiplex network body ECU) Click here
High Flash (passing function) does not operate (high beam headlights are normal) Headlight dimmer switch circuit Click here
Main body ECU (Multiplex network body ECU) Click here

*1: for Halogen Headlight

*2: for LED Headlight

*3: for HEV Model

*4: for Gasoline Model


Clearance Light
Symptom Suspected Area Link
Left or right clearance light does not illuminate Clearance light bulb*1 -
Headlight unit assembly*2 Click here
Harness or connector -
Both left and right clearance lights do not illuminate Headlight dimmer switch circuit Click here
Main body ECU (Multiplex network body ECU) Click here
Harness or connector -

*1: for Halogen Headlight

*2: for LED Headlight


Taillight
Symptom Suspected Area Link
Left or right taillights (rear combination light assembly) does not illuminate Tail and stop light LED*1 -
Rear combination light assembly*2 Click here
Harness or connector -
Left or right taillight (rear light assembly) do not illuminate*2 Rear light assembly Click here
Harness or connector -
All of the taillights, clearance lights and license plate lights do not illuminate Headlight dimmer switch circuit Click here
Taillight Relay Circuit Click here
Main body ECU (Multiplex network body ECU) Click here

*1: for Halogen Headlight

*2: for LED Headlight


License Plate Light
Symptom Suspected Area Link
Left or right license plate light does not illuminate License plate light bulb Click here
Harness or connector -
Both left and right license plate lights do not illuminate Taillight Relay Circuit Click here
Harness or connector -

Stop Light
Symptom Suspected Area Link
Left or right stop light does not illuminate Tail and stop light LED*1 -
Stop light LED*2 -
Rear combination light assembly Click here
Harness or connector -
All of the stop lights do not illuminate STOP fuse -
Stop light switch assembly Click here
Harness or connector -

*1: for Halogen Headlight

*2: for LED Headlight


High Mounted Stop Light
Symptom Suspected Area Link
High mounted stop light does not illuminate Center stop light assembly Click here
Harness or connector -

Front Fog Light (w/ Fog Light)
Symptom Suspected Area Link
Left or right front fog light does not illuminate Fog light LED -
Fog light assembly -
Harness or connector -
Both left and right front fog lights do not illuminate (taillights are normal) Headlight dimmer switch circuit Click here
Front fog light circuit Click here
Harness or connector -

Back-up Light
Symptom Suspected Area Link
Back-up light does not illuminate BKU LP fuse -
Back-up light bulb Click here
Back-up light circuit Click here
Harness or connector -

Turn Signal Light
Symptom Suspected Area Link
Left or right front turn signal light does not operate Front turn signal light bulb*1 -
Front turn signal light LED*2 Click here
Harness or connector -
Left or right side turn signal light does not operate Side turn signal light assembly Click here
Outer rear view mirror assembly Click here
Harness or connector -
Left or right rear turn signal light does not operate Rear turn signal light bulb Click here
Harness or connector -
Turn signal lights do not operate in one direction Turn signal switch circuit Click here
Meter/gauge system Click here
All turn signal lights do not operate Turn signal switch circuit Click here
Meter/gauge system Click here
All turn signal lights do not flash at the correct speed Combination meter assembly Click here

*1: for Halogen Headlight

*2: for LED Headlight


Rear Fog Light
Symptom Suspected Area Link
Rear fog light does not illuminate Rear light assembly LH Click here
Harness or connector -
Rear fog light do not illuminate (taillight are normal) Headlight dimmer switch circuit Click here
Rear light assembly LH Click here
Rear fog light circuit Click here
Main body ECU (multiplex network body ECU) Click here

Hazard Warning Signal Light
Symptom Suspected Area Link
Hazard warning signal lights do not operate Hazard warning switch circuit Click here
Combination meter assembly Click here

Automatic Light Control System
Symptom Suspected Area Link
Automatic light control system does not operate Headlight dimmer switch circuit Click here
Main body ECU (Multiplex network body ECU) Click here

Light Auto Turn-off System
Symptom Suspected Area Link
Light auto turn-off system does not operate Headlight dimmer switch circuit Click here
IG signal circuit Click here
Main body ECU (Multiplex network body ECU) Click here

Daytime Running Light System
Symptom Suspected Area Link
Left or right daytime running light does not illuminate Clearance light bulb (Daytime running light bulb)*1 Click here
Headlight assembly*2 Click here
Harness or connector -
Both left and right daytime running lights do not illuminate Daytime Running Light Circuit Click here

*1: for Halogen Headlight

*2: for LED Headlight


Manual Headlight Beam Level Control System
Symptom Suspected Area Link
Manual headlight leveling control system does not operate. Headlight leveling switch Click here
Headlight assembly*1 Click here
Headlight assembly*2 Click here
Harness or connector -

*1: for Halogen Headlight

*2: for LED Headlight