Problem Symptoms Table [08/2019 - ]
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 | Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION [09/2015 - ] |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT [08/2019 - ] | |
| Front suspension (Lower ball joint) | Refer to INSPECTION [09/2015 - ] | |
| Steering gear assembly | Refer to REMOVAL [08/2019 - ] | |
| Battery and power source circuit | Refer to ON-VEHICLE INSPECTION [09/2015 - ] | |
| Power source voltage of power steering ECU assembly | Refer to TERMINALS OF ECU [09/2015 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2019 - ] | |
| Vehicle condition (Steering wheel is turned from left to right repeatedly with vehicle stopped or heavy load is continuously applied to vehicle) | Refer to DATA LIST / ACTIVE TEST [09/2015 - ] | |
| Steering effort differs between right and left or is uneven | Rotation angle sensor initialization and torque sensor zero point calibration incomplete | Refer to CALIBRATION [09/2015 - ] |
| Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION [09/2015 - ] | |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT [08/2019 - ] | |
| Front suspension (Lower ball joint) | Refer to INSPECTION [09/2015 - ] | |
| Steering gear assembly | Refer to REMOVAL [08/2019 - ] | |
| Torque sensor (Electric power steering column sub-assembly) | Refer to REMOVAL [08/2019 - ] | |
| Electric power steering column sub-assembly | Refer to REMOVAL [08/2019 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2019 - ] | |
| 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 actuator assembly) | Refer to TERMINALS OF ECU [08/2019 - ] |
| Speed sensor | Refer to DTC CHECK / CLEAR [08/2019 - ] | |
| Torque sensor (Electric power steering column sub-assembly) | Refer to REMOVAL [08/2019 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2019 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Friction sounds occur when turning steering wheel during low speed driving | Power steering motor (Power steering ECU assembly) | Refer to REMOVAL [08/2019 - ] |
| Electric power steering column sub-assembly | Refer to REMOVAL [08/2019 - ] | |
| Spiral with cable sensor sub-assembly | Refer to INSPECTION [12/2017 - ] | |
| Steering column cover contacting steering wheel assembly | Refer to INSTALLATION [08/2019 - 07/2020] , or refer to INSTALLATION [07/2020 - ] | |
| High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped | Power steering motor (Power steering ECU assembly) | Refer to REMOVAL [08/2019 - ] |
| Steering wheel installation (incorrect) | Refer to INSTALLATION [08/2019 - 07/2020] , or refer to INSTALLATION [07/2020 - ] | |
| Steering wheel vibrates and noise occurs when turning steering wheel from lock to lock | Power steering motor (Power steering ECU assembly) | Refer to REMOVAL [08/2019 - ] |
| Electric power steering column sub-assembly | Refer to REMOVAL [08/2019 - ] | |
| Steering wheel installation (incorrect) | Refer to INSTALLATION [08/2019 - 07/2020] , or refer to INSTALLATION [07/2020 - ] | |
| EPS warning light remains on | EPS warning light circuit | Refer to EPS Warning Light Circuit [09/2015 - ] |