LIGHTING SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

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.

Illuminated Entry System
Symptom Suspected Area See page
Only front interior light does not illuminate. Map light assembly

Click here

Harness or connector -
Only rear interior light does not illuminate. Spot light assembly

Click here

Harness or connector -
Only footwell light does not illuminate. Footwell light

Click here

Harness or connector -
Only power switch illumination does not illuminate. Power switch illumination circuit

Click here

Certification ECU (Smart key ECU assembly) -
Main body ECU (Multiplex network body ECU)

Click here

Illuminated entry system does not operate normally. DOME fuse -
Door courtesy switch circuit

Click here

Door unlock detection switch circuit

Click here

Driver side door control switch circuit

Click here

Front passenger side door control switch circuit

Click here

IG signal circuit

Click here

ACC signal circuit

Click here

Interior light circuit

Click here

Power switch illumination circuit

Click here

Certification ECU (Smart key ECU assembly) -
Main body ECU (Multiplex network body ECU)

Click here

Vanity Light
Symptom Suspected Area See page
Vanity light does not illuminate. Bulb -
Harness or connector -
Glove Box Light
Symptom Suspected Area See page
Glove box light does not illuminate. Glove box light assembly

Click here

Harness or connector -
Courtesy Light
Symptom Suspected Area See page
Courtesy light does not illuminate. Bulb -
Courtesy light assembly

Click here

Door courtesy switch circuit

Click here

Door courtesy light circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here

Battery Saving Control
Symptom Suspected Area See page
Battery saving function does not operate. Door courtesy switch circuit

Click here

IG signal circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here

Luggage Compartment Light (w/o Power Back Door)
Symptom Suspected Area See page
Luggage compartment light does not illuminate. Bulb -
Luggage compartment light assembly

Click here

Back door courtesy switch

Click here

Harness or connector -
Luggage Compartment Light (w/ Power Back Door)
Symptom Suspected Area See page
Luggage compartment light does not illuminate. (Power back door system operates normally.) Bulb -
Back door courtesy switch circuit

Click here

Luggage compartment light circuit

Click here

Power back door unit assembly

Click here

Console Box Light
Symptom Suspected Area See page
Console box light does not illuminate. Console box light

Click here

Harness or connector -
Front Personal Light
Symptom Suspected Area See page
Front door courtesy light does not illuminate. Bulb -
Map light assembly

Click here

Harness or connector -
Rear Personal Light
Symptom Suspected Area See page
Rear room light does not illuminate. Bulb -
Harness or connector -
Center Console Spot Light
Symptom Suspected Area See page
Center console spot light does not illuminate. Center console illumination circuit

Click here

IG signal circuit

Click here

ACC signal circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here

Instrument Panel Illumination (for RHD)
Symptom Suspected Area See page
All of instrument panel illumination lights do not come on. (Taillights operate normally.) PANEL fuse -
Harness or connector -
Instrument Panel Illumination (for LHD)
Symptom Suspected Area See page
All of instrument panel illumination lights do not come on when taillights are turned on by the automatic light control or manual light control. (Taillights operate normally.) PANEL fuse -
Instrument panel illumination circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here

All of instrument panel illumination lights come on when taillights are turned on by the daytime running light control. (Taillights operate normally.) Instrument panel illumination circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here