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Problem Symptoms Table: Notes

Headlight and taillight system: 

PROBLEM SYMPTOMS TABLE - HEADLIGHT AND TAILLIGHT SYSTEM

Symptom Suspected Area See
"LO-beam" headlight does not illuminate Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Headlight relay circuit HEADLIGHT RELAY CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
"Hi-beam" headlight does not illuminate Headlight (HI-BEAM) circuit HEADLIGHT (HI-BEAM) CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
"Flash" headlight does not illuminate Headlight (HI-BEAM) circuit HEADLIGHT (HI-BEAM) CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Headlight is dark Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Headlight does not illuminate or has abnormal operation Headlight relay circuit HEADLIGHT RELAY CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Taillight does not illuminate or has abnormal operation Taillight circuit TAILLIGHT CIRCUIT 
Multiplex network rear ECU (Luggage room junction block ECU) -
Both left and right headlight do not illuminate Headlight (HI-BEAM) circuit HEADLIGHT (HI-BEAM) CIRCUIT 
Headlight relay circuit HEADLIGHT RELAY CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Engine room No. 2 relay block (Front controller) -
Combination switch assembly (Windshield wiper assembly) -
Multiplex network body ECU (Cowl side junction block ECU RH) -
Headlight beam level control system does not operate Headlight beam level control actuator circuit HEADLIGHT BEAM LEVEL CONTROL ACTUATOR CIRCUIT 
Height control sensor circuit HEIGHT CONTROL SENSOR CIRCUIT 
Headlight beam level control ECU communication circuit HEADLIGHT BEAM LEVEL CONTROL ECU COMMUNICATION CIRCUIT 
Headlight beam level control ECU power source circuit HEADLIGHT BEAM LEVEL CONTROL ECU POWER SOURCE CIRCUIT 
Headlight beam level control ECU -
Cowl side Junction block ECU LH -
Skid control ECU with actuator -

Stop light system: 

PROBLEM SYMPTOMS TABLE - STOP LIGHT SYSTEM

Symptom Suspected Area See
Stop light system does not illuminate Stop light circuit STOP LIGHT CIRCUIT 
Multiplex network rear ECU (Luggage room junction block ECU) -
Hi-mounted stop light does not illuminate Stop light circuit STOP LIGHT CIRCUIT 
Multiplex network rear ECU (Luggage room junction block ECU) -

Fog light system: 

PROBLEM SYMPTOMS TABLE - FOG LIGHT SYSTEM

Symptom Suspected Area See
Fog light does not illuminate or has abnormal operation Front fog light circuit FRONT FOG LIGHT CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Headlight signal circuit HEADLIGHT SIGNAL CIRCUIT 
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Multiplex network body ECU (Cowl side junction block ECU RH) -

Turn signal light system: 

PROBLEM SYMPTOMS TABLE - TURN SIGNAL LIGHT SYSTEM

Symptom Suspected Area See
Hazard warning light does not illuminate Hazard warning switch circuit HAZARD WARNING SWITCH CIRCUIT 
Turn signal flasher -
Multi-display (Hazard warning switch) -
Turn signal light does not illuminate Turn signal light circuit TURN SIGNAL LIGHT CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Cowl side Junction block ECU LH -

Interior light system: 

PROBLEM SYMPTOMS TABLE - INTERIOR LIGHT SYSTEM

Symptom Suspected Area See
Door courtesy light does not illuminate Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
Door courtesy light circuit DOOR COURTESY LIGHT CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Multiplex network door ECU front LH (Driver side door ECU) -
Multiplex network door ECU front RH (Front passenger side door ECU) -
Multiplex network door ECU rear LH (Rear door LH) -
Multiplex network door ECU rear RH (Rear door RH) -
Luggage room light does not illuminate Luggage room light circuit LUGGAGE ROOM LIGHT CIRCUIT 
Cowl side junction block ECU LH -
Room light does not illuminate Room light circuit ROOM LIGHT CIRCUIT 
Map light assembly (Overhead junction block) -
Cowl side junction block ECU LH -
Step illumination does not illuminate Step illumination circuit STEP ILLUMINATION CIRCUIT 
Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
Multiplex network body ECU (Cowl side junction block ECU RH) -
Inside handle illumination light does not illuminate Inside handle illumination light circuit INSIDE HANDLE ILLUMINATION LIGHT CIRCUIT 
Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
Multiplex network door ECU front LH (Driver side door ECU) -
Multiplex network door ECU front RH (Front passenger side door ECU) -
Multiplex network door ECU rear LH (Rear door LH) -
Multiplex network door ECU rear RH (Rear door RH) -

Others: 

PROBLEM SYMPTOMS TABLE - OTHERS

Symptom Suspected Area See
Back-up light does not illuminate Back-up light circuit BACK-UP LIGHT CIRCUIT 
Multiplex network rear ECU (Luggage room junction block ECU) -
License plate light does not Illuminate Taillight circuit TAILLIGHT CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -
Multiplex network rear ECU (Luggage room junction block ECU) -
Clearance light does not illuminate Taillight circuit TAILLIGHT CIRCUIT 
Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
Combination switch assembly (Windshield wiper assembly) -
Engine room No. 2 relay block (Front controller) -