Problem Symptoms Table
Headlight and taillight system:
HEADLIGHT AND TAILLIGHT SYSTEM PROBLEM SYMPTOMS
| 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:
STOP LIGHT SYSTEM PROBLEM SYMPTOMS
| 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:
FOG LIGHT SYSTEM PROBLEM SYMPTOMS
| 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:
TURN SIGNAL LIGHT SYSTEM PROBLEM SYMPTOMS
| 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:
INTERIOR LIGHT SYSTEM PROBLEM SYMPTOMS
| 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:
OTHERS PROBLEM SYMPTOMS
| 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) | - |
AFS
AFS PROBLEM SYMPTOMS
| Symptom | Suspected area | See |
|---|---|---|
| AFS does not operate(*1) | AFS ECU power source circuit | AFS ECU POWER SOURCE CIRCUIT |
| AFS ECU | AFS PROBLEM SYMPTOMS | |
| Only one swivel motor is not initialized(*1) | Headlight assembly or swivel motor stuck(*2) | - |
| Headlight swivel motor malfunction | - | |
| AFS ECU | AFS PROBLEM SYMPTOMS | |
| Only swivel control does not operate or malfunctions | AFS ECU switch status(*3) | - |
| Steering control ECU | - | |
| Vehicle speed sensor malfunction | - | |
| BEAN communication malfunction | - | |
| Headlight swivel motor malfunction | - | |
| AFS ECU | AFS PROBLEM SYMPTOMS | |
| Swivel control and leveling control do not operate | Height control sensor malfunction | - |
| Headlight swivel motor malfunction | - | |
| AFS ECU | AFS PROBLEM SYMPTOMS | |
| AFS OFF indicator light does not come on | AFS OFF switch circuit | AFS OFF SWITCH CIRCUIT |
| BEAN communication malfunction | - | |
| Combination meter assembly | - | |
| AFS ECU | AFS PROBLEM SYMPTOMS |
HINT:
- *1: When the AFS indicator light does not come 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 assembly with a new one.
- *3: Before the procedure, check that the AFS OFF switch is not pushed.