Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B7KB
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: LIGHTING (INT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE; 2019 - 2022 MY Avalon HV [04/2018 -        ]

PROBLEM SYMPTOMS TABLE

NOTICE:

Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Registration.

2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2021 - 2022 MY Avalon HV [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

HINT:

  • 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.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Map Light

Symptom

Suspected Area

Link

Map light LH or map light RH does not illuminate (Other interior lights are normal)

Map light (Roof console box sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: INSPECTION

Map light LH and map light RH do not illuminate (Other interior lights are normal)

Map light (Roof console box sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: INSPECTION

Harness or connector

-

Switch illumination or shift lever illumination does not illuminate (Other interior lights are normal)

Map light (Roof console box sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: INSPECTION

Switch illumination and shift lever illumination do not illuminate (Other interior lights are normal)

Map light (Roof console box sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: INSPECTION

Harness or connector

-

Room Light

Symptom

Suspected Area

Link

Spot light LH or spot light RH does not illuminate (Other interior lights are normal)

Spot light assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): ROOM LIGHT: INSPECTION

Spot light LH and spot light RH do not illuminate (Other interior lights are normal)

Spot light assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): ROOM LIGHT: INSPECTION

Harness or connector

-

Vanity Light

Symptom

Suspected Area

Link

Vanity light LH does not illuminate

Bulb

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): VANITY LIGHT BULB: REPLACEMENT

Visor assembly LH

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): VANITY LIGHT: INSPECTION

Harness or connector

-

Vanity light RH does not illuminate

Bulb

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): VANITY LIGHT BULB: REPLACEMENT

Visor assembly RH

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): VANITY LIGHT: INSPECTION

Harness or connector

-

Courtesy Light

Symptom

Suspected Area

Link

Courtesy light LH does not illuminate

Bulb

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): DOOR COURTESY LIGHT BULB: REPLACEMENT

Courtesy light assembly LH

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): DOOR COURTESY LIGHT: INSPECTION

Front door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Front Door Courtesy Switch Circuit

Harness or connector

-

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Courtesy light RH does not illuminate

Bulb

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): DOOR COURTESY LIGHT BULB: REPLACEMENT

Courtesy light assembly RH

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): DOOR COURTESY LIGHT: INSPECTION

Front door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Front Door Courtesy Switch Circuit

Harness or connector

-

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Glove Box Light

Symptom

Suspected Area

Link

Glove box light does not illuminate

Glove box light assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): GLOVE BOX LIGHT: INSPECTION

Harness or connector

-

Console Box Light

Symptom

Suspected Area

Link

Console box light does not illuminate

Console box light (No. 5 interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): CONSOLE BOX LIGHT: INSPECTION

Harness or connector

-

Footwell Light and Front Console Light

Symptom

Suspected Area

Link

Front footwell light LH does not illuminate

Front footwell light LH (No. 1 interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): FOOTWELL LIGHT(for Front Side): INSPECTION

Harness or connector

-

Front footwell light RH does not illuminate

Front footwell light RH (No. 1 interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): FOOTWELL LIGHT(for Front Side): INSPECTION

Harness or connector

-

Rear footwell light LH does not illuminate.

Rear footwell light LH (No. 6 interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): FOOTWELL LIGHT(for Rear Side): INSPECTION

Harness or connector

-

Rear footwell light RH does not illuminate

Rear footwell light RH (No. 6 interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): FOOTWELL LIGHT(for Rear Side): INSPECTION

Harness or connector

-

Front console light does not illuminate

Front console light (interior illumination light sub-assembly)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): FRONT CONSOLE LIGHT: INSPECTION

Harness or connector

-

All footwell lights and front console light do not illuminate

Harness or connector

-

Combination meter assembly

2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL

Ambient Illumination Light (w/ Mood Switch)

Symptom

Suspected Area

Link

Front door inside handle illumination light LH does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Front door inside handle illumination light RH does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Console light (for passenger side) does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Console light (for driver side) does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Cup holder light (for front side) does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Cup holder light (for rear side) does not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

All ambient illumination lights do not illuminate

Ambient illumination light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Illumination Light Circuit

Ambient light switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Light Switch Circuit

Instrument panel junction block assembly

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Luggage Compartment Light

Symptom

Suspected Area

Link

Luggage compartment light does not illuminate (Other interior lights are normal)

Bulb

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): LUGGAGE COMPARTMENT ROOM LIGHT BULB: REPLACEMENT

No. 1 luggage compartment light assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): LUGGAGE COMPARTMENT ROOM LIGHT: INSPECTION

Luggage compartment door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Luggage Compartment Door Courtesy Switch Circuit

Harness or connector

-

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Interior Light Power Source Control

Symptom

Suspected Area

Link

All the interior lights that receive power via the DOME CUT relay do not illuminate

Interior light auto cut circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Interior Light Auto Cut Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Illuminated Entry System

Symptom

Suspected Area

Link

All illuminated entry system control functions do not operate under any condition

Check customize parameters (Interior Light Control)

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): CUSTOMIZE PARAMETERS

Interior light auto cut circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Interior Light Auto Cut Circuit

Interior light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Interior Light Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Actuation area-linked control function does not operate when registered key is brought into any exterior detection area

Check customize parameters (Room Light when Aprchd)

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): CUSTOMIZE PARAMETERS

CAN communication system

2019 - 2022 MY Avalon HV [04/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Smart key system (for Entry Function)

2019 - 2022 MY Avalon HV [04/2018 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Door lock/unlock-linked control function does not operate when doors are locked/unlocked

Check customize parameters (I/L ON W/Door Key Unlock)

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): CUSTOMIZE PARAMETERS

Door unlock detection switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Door Unlock Detection Switch Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Door open/close-linked control function does not operate when doors are opened/closed

Front door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Front Door Courtesy Switch Circuit

Rear door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Rear Door Courtesy Switch Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Power switch-linked control function does not operate when power switch is operated

Check customize parameters (I/L when ACC OFF)

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): CUSTOMIZE PARAMETERS

IG signal circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): IG Signal Circuit

ACC signal circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): ACC Signal Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Power switch illumination does not illuminate

CAN communication system

2019 - 2022 MY Avalon HV [04/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Power switch illumination circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Power Switch Illumination Circuit

Certification ECU (Smart key ECU assembly)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

Ambient light dimmer control does not operate with mood switch operation

Ambient light switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Ambient Light Switch Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

Battery Saving Control System

Symptom

Suspected Area

Link

Battery saving function does not operate

IG signal circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): IG Signal Circuit

ACC signal circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): ACC Signal Circuit

Front door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Front Door Courtesy Switch Circuit

Rear door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Rear Door Courtesy Switch Circuit

Luggage compartment door courtesy switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Luggage Compartment Door Courtesy Switch Circuit

Door unlock detection switch circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Door Unlock Detection Switch Circuit

Interior light auto cut circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Interior Light Auto Cut Circuit

Main body ECU (Multiplex network body ECU)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL