Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001XOEL
Model Year Start: 2022 Model: Avalon HV Prod Date Range: [08/2021 -           ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE; 2022 MY Avalon HV [08/2021 -        ]

PROBLEM SYMPTOMS TABLE

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.

Symptom

Suspected Area

Link

Electric parking brake does not operate

Proceed to "Electric Parking Brake does not Operate"

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Electric Parking Brake does not Operate

Parking brake indicator light does not illuminate or turn off when parking brake is manually engaged and disengaged

Proceed to "Electric Parking Brake does not Operate"

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Electric Parking Brake does not Operate

Electric parking brake AUTO function (shift-linked function) does not operate (shift-linked parking brake does not lock or release)

Proceed to "Electric Parking Brake System AUTO Function Circuit"

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Electric Parking Brake System AUTO Function Circuit

Message not displayed on combination meter when AUTO function set to ON/OFF

Proceed to "Message Not Displayed on Combination Meter When AUTO Function Set to ON/OFF"

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Message Not Displayed on Multi-information Display When AUTO Function Set to ON/OFF

Brake system warning light (yellow indicator) remains on

Refer to Vehicle Control History (RoB)

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): VEHICLE CONTROL HISTORY (RoB)

Proceed to "Brake Control Warning Light Remains ON"

2019 - 2022 MY Avalon HV [04/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): Brake Control Warning Light Remains ON

Electric parking brake switch indicator light on electric parking brake switch does not illuminate or turn off when lock and release operations are performed

Electric parking brake switch indicator light drive circuit

2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): SYSTEM DIAGRAM

Wire harness and connector (electric parking brake switch assembly - parking brake ECU (brake actuator assembly))

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Electric parking brake switch assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SWITCH: REMOVAL

Parking brake ECU (brake actuator assembly)

2022 MY Avalon HV [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for HV Model): REMOVAL