Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem symptom. 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.
Inspect the fuse and relay related to this system before inspecting the suspected areas below.

Headlight and taillight system

HEADLIGHT AND TAILLIGHT SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
"LO-beam" headlight does not illuminate	1. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	2. Headlight relay circuit	HEADLIGHT RELAY CIRCUIT
	3. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	4. Main body ECU RH	-
	5. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	6. Front light ECU	-
"Hi-beam" headlight does not illuminate	1. Headlight (HI-BEAM) circuit	HEADLIGHT (HI-BEAM) CIRCUIT
	2. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	3. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	4. Main body ECU RH	-
	5. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	6. Front light ECU	-
"Flash" headlight does not illuminate	1. Headlight (HI-BEAM) circuit	HEADLIGHT (HI-BEAM) CIRCUIT
	2. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	3. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	4. Main body ECU RH	-
	5. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	6. Front light ECU	-
Headlight is dark	1. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	2. Main body ECU RH	-
	3. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	4. Front light ECU	-
Headlight does not illuminate or has abnormal operation	1. Headlight relay circuit	HEADLIGHT RELAY CIRCUIT
	2. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	3. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	4. Main body ECU RH	-
	5. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	6. Front light ECU	-
Taillight does not illuminate or has abnormal operation	1. Taillight circuit	TAILLIGHT CIRCUIT
Taillight does not illuminate or has abnormal operation	2. Rear multiplex network ECU	-
Both left and right headlight do not illuminate	1. Headlight (HI-BEAM) circuit	HEADLIGHT (HI-BEAM) CIRCUIT
	2. Headlight relay circuit	HEADLIGHT RELAY CIRCUIT
	3. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	4. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	5. Front light ECU	-
	6. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	7. Main body ECU RH	-

Stop light system

STOP LIGHT SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Stop light system does not illuminate	1. Stop light circuit	STOP LIGHT CIRCUIT
Stop light system does not illuminate	2. Rear multiplex network ECU	-
High mounted stop light does not illuminate	1. Stop light circuit	STOP LIGHT CIRCUIT
High mounted stop light does not illuminate	2. Rear multiplex network ECU	-

Fog light system

FOG LIGHT SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Fog light does not illuminate or has abnormal operation	1. Front fog light circuit	FRONT FOG LIGHT CIRCUIT
	2. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	3. Headlight signal circuit	HEADLIGHT SIGNAL CIRCUIT
	4. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	5. Front light ECU	-
	6. Main body ECU RH	-

Turn signal light system

TURN SIGNAL LIGHT SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Hazard warning light does not illuminate	1. Hazard warning switch circuit	HAZARD WARNING SWITCH CIRCUIT
	2. Turn signal flasher	-
	3. Multi-display (Hazard warning switch)	-
Turn signal light does not illuminate	1. Turn signal light circuit	TURN SIGNAL LIGHT CIRCUIT
	2. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	3. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	4. Front light ECU	-
	5. Main body ECU LH	-

Interior light system

INTERIOR LIGHT SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Door courtesy light does not illuminate	1. Door courtesy switch circuit	DOOR COURTESY SWITCH CIRCUIT
	2. Door courtesy light circuit	DOOR COURTESY LIGHT CIRCUIT
	3. Main body ECU RH	-
	4. Front multiplex network door ECU LH	-
	5. Front multiplex network door ECU RH	-
	6. Rear multiplex network door ECU LH	-
	7. Rear multiplex network door ECU RH	-
Luggage room light does not illuminate	1. Luggage room light circuit	LUGGAGE ROOM LIGHT CIRCUIT
Luggage room light does not illuminate	2. Main body ECU LH	-
Room light does not illuminate	1. Room light circuit	ROOM LIGHT CIRCUIT
	2. Map light (Overhead junction block)	-
	3. Main body ECU LH	-
Step illumination does not illuminate	1. Step illumination circuit	STEP ILLUMINATION CIRCUIT
	2. Door courtesy switch circuit	DOOR COURTESY SWITCH CIRCUIT
	3. Main body ECU RH	-
Inside handle illumination light does not illuminate	1. Inside handle illumination light circuit	INSIDE HANDLE ILLUMINATION LIGHT CIRCUIT
	2. Door courtesy switch circuit	DOOR COURTESY SWITCH CIRCUIT
	3. Front multiplex network door ECU LH	-
	4. Front multiplex network door ECU RH	-
	5. Rear multiplex network door ECU LH	-
	6. Rear multiplex network door ECU RH	-
	7. Main body ECU RH	-

Other

PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Back-up light does not illuminate	1. Back-up light circuit	BACK-UP LIGHT CIRCUIT
Back-up light does not illuminate	2. Rear multiplex network rear ECU	-
License plate light does not illuminate	1. Taillight circuit	TAILLIGHT CIRCUIT
	2. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	3. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	4. Front light ECU	-
	5. Rear multiplex network ECU	-
Clearance light does not illuminate	1. Taillight circuit	TAILLIGHT CIRCUIT
	2. Light control switch circuit	LIGHT CONTROL SWITCH CIRCUIT
	3. Combination switch (Windshield wiper)	HEADLIGHT DIMMER SWITCH
	4. Front light ECU	-

Headlight beam level control system

HEADLIGHT BEAM LEVEL CONTROL SYSTEM PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
Headlight beam level control system does not operate	1. Headlight beam level control ECU power source circuit	HEADLIGHT LEVELING ECU POWER SOURCE CIRCUIT
	2. Headlight beam level control actuator circuit	HEADLIGHT BEAM LEVEL CONTROL ACTUATOR CIRCUIT
	3. Height control sensor circuit	HEIGHT CONTROL SENSOR CIRCUIT
	4. Headlight beam level control ECU communication circuit	HEADLIGHT BEAM LEVEL CONTROL ECU COMMUNICATION CIRCUIT
	5. Headlight beam level control ECU	-
	6. Main body ECU LH	-
	7. Skid control ECU	-

AFS

AFS PROBLEM SYMPTOM CHART

Symptom	Suspected Area	See
AFS does not operate*1	1. AFS ECU power source circuit	AFS ECU POWER SOURCE CIRCUIT
AFS does not operate*1	2. AFS ECU	-
Only one swivel motor is not initialized*1	1. Headlight or swivel motor stuck*2	-
	2. Headlight swivel motor malfunction	-
	3. AFS ECU	-
Only swivel control does not operate or malfunctions	1. AFS ECU switch status*3	-
	2. Steering control ECU	-
	3. Vehicle speed sensor malfunction	-
	4. BEAN communication malfunction	-
	5. Headlight swivel motor malfunction	-
	6. AFS ECU	-
Swivel control and leveling control do not operate	1. Height control sensor malfunction	-
	2. Headlight swivel motor malfunction	-
	3. AFS ECU	-
AFS OFF indicator light does not come on	1. AFS OFF switch circuit	AFS OFF SWITCH CIRCUIT
	2. BEAN communication malfunction	-
	3. Combination meter	-
	4. AFS ECU	-
HINT: 1: When the AFS indicator light does not turn on or blink despite the symptom being indicated, check the battery voltage. 2: Check if the headlight swivel motor turns smoothly by hand. If the motor does not turn, replace it with a new one. If the motor still does not turn, replace the headlight with a new one. *3: Before the inspection, check that the AFS OFF switch is not pushed.