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
Illuminated entry system does not operate. CAN communication system (for LHD)

Click here

CAN communication system (for RHD)

Click here

Entry and start system (for Entry Function)

Click here

Luggage compartment door closer system (w/ Power Trunk Lid System)

Click here

Lighting system (EXT)

Click here

DOME fuse -
Interior light circuit

Click here

Door unlock detection switch circuit

Click here

Door courtesy switch circuit

Click here

Luggage compartment door courtesy switch circuit

Click here

IG signal circuit

Click here

ACC signal circuit

Click here

Interior light auto cut circuit

Click here

Harness or connector -
Main body ECU (Multiplex network body ECU)

Click here

Map Light Assembly
Symptom Suspected Area See page
Map light assembly does not illuminate. Map light assembly

Click here

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

Click here

Harness or connector -
No. 1 Luggage Compartment Light Assembly (w/ Power Trunk Lid System)
Symptom Suspected Area See page
No. 1 luggage compartment light assembly does not illuminate. No. 1 luggage compartment light bulb

Click here

No. 1 luggage compartment light assembly

Click here

Luggage compartment door closer system

Click here

Harness or connector -
No. 1 Luggage Compartment Light Assembly (w/o Power Trunk Lid System)
Symptom Suspected Area See page
No. 1 luggage compartment light assembly does not illuminate. No. 1 luggage compartment light bulb

Click here

No. 1 luggage compartment light assembly

Click here

Luggage compartment door courtesy switch circuit

Click here

Harness or connector -
Main body ECU (Multiplex network body ECU)

Click here

Vanity Light Assembly
Symptom Suspected Area See page
Vanity light assembly does not illuminate. Vanity light bulb

Click here

Visor assembly

Click here

Harness or connector -
Shift Light
Symptom Suspected Area See page
Shift light does not illuminate. LH-IG fuse -
Inner rear view mirror assembly

Click here

Map light assembly

Click here

Harness or connector -
Front Courtesy Light Assembly
Symptom Suspected Area See page
Front courtesy light assembly does not illuminate. CAN communication system (for LHD)

Click here

CAN communication system (for RHD)

Click here

Front courtesy light bulb

Click here

Front courtesy light assembly

Click here

Door courtesy switch circuit

Click here

Door courtesy light Circuit

Click here

Harness or connector -
Front multiplex network door ECU LH

Click here

Front multiplex network door ECU RH

Click here

Main body ECU (Multiplex network body ECU)

Click here

Rear Courtesy Light Assembly
Symptom Suspected Area See page
Rear courtesy light assembly does not illuminate. Rear courtesy light bulb

Click here

Door courtesy switch circuit

Click here

Rear courtesy light assembly

Click here

Harness or connector -
Main body ECU (Multiplex network body ECU)

Click here

Glove Box Light
Symptom Suspected Area See page
Glove box light does not illuminate. Harness or connector -
Console Box Illumination Light Assembly
Symptom Suspected Area See page
Console box illumination light assembly does not illuminate. Console box illumination light assembly

Click here

Harness or connector -
Interior Foot Light and Door Illumination
Symptom Suspected Area See page
Front door inside handle illumination light assembly and No. 1 interior illumination light assembly (front door ambient light) do not illuminate. Illumination circuit

Click here

Front multiplex network door ECU LH

Click here

Front multiplex network door ECU RH

Click here

Main body ECU (Multiplex network body ECU)

Click here

Rear door inside handle illumination light assembly, No. 1 interior illumination light assembly (rear door ambient light), front interior foot lights and No. 1 interior illumination light assembly (rear interior foot light) do not illuminate. Illumination circuit

Click here

Main body ECU (Multiplex network body ECU)

Click here

Rear door inside handle illumination light assembly does not illuminate. Rear door inside handle illumination light assembly

Click here

Harness or connector -
No. 1 interior illumination light assembly (rear door ambient light) does not illuminate. No. 1 interior illumination light assembly (rear door ambient light)

Click here

Harness or connector -
No. 1 interior illumination light assembly (rear interior foot light) does not illuminate. No. 1 interior illumination light assembly (rear interior foot light)

Click here

Harness or connector -
Front interior foot lights do not illuminate. Harness or connector -
Outer Rear View Mirror Assembly (Door Mirror Foot Light)
Symptom Suspected Area See page
Door mirror foot light does not illuminate. CAN communication system (for LHD)

Click here

CAN communication system (for RHD)

Click here

Door mirror foot light circuit

Click here

Front multiplex network door ECU LH

Click here

Front multiplex network door ECU RH

Click here

Main body ECU (Multiplex network body ECU)

Click here

Clock Assembly
Symptom Suspected Area See page
Clock assembly does not illuminate. Meter/gauge system

Click here

Clock assembly

Click here

Harness or connector -
Battery Saving Control System
Symptom Suspected Area See page
Battery saving function does not operate. Door courtesy switch circuit

Click here

Luggage compartment door courtesy switch circuit

Click here

IG signal circuit

Click here

Interior light auto cut circuit

Click here

Harness or connector -
Main body ECU (Multiplex network body ECU)

Click here

Power Switch Illumination System
Symptom Suspected Area See page
Power switch illumination does not illuminate. CAN communication system (for LHD)

Click here

CAN communication system (for RHD)

Click here

Headlight dimmer switch circuit

Click here

Power switch illumination circuit

Click here

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

Click here

Instrument Panel Illumination System
Symptom Suspected Area See page
No instrument panel illumination lights come on (taillights operate normally). Instrument panel illumination circuit

Click here

Harness or connector -
No. 2 integration relay

Click here

Main body ECU (Multiplex network body ECU)

Click here