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 No. 1 room light assembly does not illuminate. No. 1 room light assembly

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Harness or connector -
Main body ECU (Multiplex network body ECU) -
Only power switch illumination does not illuminate. CAN communication system

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Power switch illumination circuit

Click here

Certification ECU (Smart key ECU assembly) -
Main body ECU (Multiplex network body ECU) -
Illuminated entry system does not operate normally. DOME fuse -
Door courtesy switch circuit

Click here

Door unlock detection switch circuit

Click here

IG signal circuit

Click here

ACC signal circuit

Click here

Interior light circuit

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CAN communication system

Click here

Power switch illumination circuit

Click here

Certification ECU (Smart key ECU assembly) -
Main body ECU (Multiplex network body ECU) -
Vanity Light
Symptom Suspected Area See page
Vanity light does not illuminate. Bulb -
Visor assembly -
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 -
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) -
Luggage Compartment Light
Symptom Suspected Area See page
Luggage compartment light does not illuminate. Bulb -
No. 2 room light assembly

Click here

Back door courtesy switch

Click here

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

Click here

Harness or connector -
Rear Interior Light
Symptom Suspected Area See page
No. 1 room light assembly does not illuminate. Bulb -
No. 1 room light assembly (room light switch base)

Click here

Harness or connector -
Shift Illumination Light
Symptom Suspected Area See page
Shift illumination light does not illuminate. Harness or connector -
Inner rear view mirror assembly -
Instrument Panel Illumination
Symptom Suspected Area See page
All of instrument panel illumination lights do not come on. (Taillights operate normally.) PANEL fuse -
Harness or connector -