Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B5KF
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): PROBLEM SYMPTOMS TABLE; 2019 - 2022 MY Avalon HV [04/2018 -        ]

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.

Power Steering System

Symptom

Suspected Area

Link

Heavy steering

Check assist limit record

2019 - 2022 MY Avalon HV [04/2018 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): Check Assist Limit Record

Front tires (improperly inflated, unevenly worn)

2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; TIRE / WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; TIRE / WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION

Front wheel alignment (incorrect)

2019 MY Avalon Avalon HV [04/2018 - 08/2019]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2020 MY Avalon Avalon HV [08/2019 - 08/2020]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2022 MY Avalon Avalon HV [08/2021 -        ]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT

Front suspension (Lower ball joint)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; FRONT SUSPENSION: FRONT LOWER BALL JOINT: INSPECTION

Rack and pinion power steering gear assembly

2019 - 2022 MY Avalon HV [04/2018 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): INSPECTION

Steering effort differs between right and left or is uneven

Rotation angle sensor initialization and torque sensor zero point calibration incomplete

2019 - 2022 MY Avalon HV [04/2018 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): CALIBRATION

Front tires (improperly inflated, unevenly worn)

2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; TIRE / WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; TIRE / WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION

Front wheel alignment (incorrect)

2019 MY Avalon Avalon HV [04/2018 - 08/2019]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2020 MY Avalon Avalon HV [08/2019 - 08/2020]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT 2022 MY Avalon Avalon HV [08/2021 -        ]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT

Front suspension (Lower ball joint)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; FRONT SUSPENSION: FRONT LOWER BALL JOINT: INSPECTION

Rack and pinion power steering gear assembly

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL 2022 MY Avalon HV [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL

Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL

Steering column assembly (for Power Tilt and Power Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL

While driving, steering effort does not change in accordance with vehicle speed, or steering wheel does not return to its centered position easily

Skid control ECU (Brake Booster with Master Cylinder Assembly)

2019 - 2022 MY Avalon HV [04/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): TERMINALS OF ECU

Speed sensor

2019 - 2022 MY Avalon HV [04/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): DTC CHECK / CLEAR

Rack and pinion power steering gear assembly

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL 2022 MY Avalon HV [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL

CAN communication system

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

Friction sounds occur when turning steering wheel during low speed driving

Rack and pinion power steering gear assembly

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL 2022 MY Avalon HV [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL

Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL

Steering column assembly (for Power Tilt and Power Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL

Spiral with cable sensor sub-assembly

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION

Steering column cover contacting steering wheel assembly (for Manual Tilt and Manual Telescopic Steering Column)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): INSTALLATION

Steering column cover contacting steering wheel assembly (for Power Tilt and Power Telescopic Steering Column)

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): INSTALLATION

High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped

Rack and pinion power steering gear assembly

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL 2022 MY Avalon HV [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL

Steering wheel installation (incorrect)

2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; STEERING COLUMN: STEERING WHEEL: INSTALLATION 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; STEERING COLUMN: STEERING WHEEL: INSTALLATION

Steering wheel vibrates and noise occurs when turning steering wheel from lock to lock

Rack and pinion power steering gear assembly

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL 2022 MY Avalon HV [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for HV Model): REMOVAL

Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column): REMOVAL

Steering column assembly (for Power Tilt and Power Telescopic Steering Column)

2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column): REMOVAL

Steering wheel installation (incorrect)

2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; STEERING COLUMN: STEERING WHEEL: INSTALLATION 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; STEERING COLUMN: STEERING WHEEL: INSTALLATION

EPS warning light remains on

EPS warning light circuit

2019 - 2022 MY Avalon HV [04/2018 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): EPS Warning Light Circuit