Problem Symptoms Table [08/2016 - 08/2017]
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.
STEERING SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Heavy steering | Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION [08/2013 - 08/2017] |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT [08/2016 - 08/2017] | |
| Front suspension (lower ball joint) | Refer to INSPECTION [08/2013 - ] | |
| Electric power steering column sub-assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Torque sensor (Electric power steering column sub-assembly) | - | |
| Power steering motor assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Speed sensor circuit*3 | Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 08/2017] | |
| Speed sensor circuit*4 | Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2016 - ] | |
| Battery and power source system*1 | Refer to ON-VEHICLE INSPECTION [08/2013 - ] | |
| Battery and power source system*2 | Refer to ON-VEHICLE INSPECTION [08/2013 - ] | |
| Power steering ECU assembly power source voltage and relay | Refer to TERMINALS OF ECU [08/2014 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2013 - ] | |
| CAN communication system (w/ Central Gateway ECU) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ] | |
| CAN communication system (w/o Central Gateway ECU) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] | |
| Steering effort differs between turning right and left, or steering effort is uneven | Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION [08/2013 - 08/2017] |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT [08/2016 - 08/2017] | |
| Steering gear assembly | Refer to REMOVAL [08/2013 - ] | |
| Torque sensor (Electric power steering column sub-assembly) | - | |
| Electric power steering column sub-assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Power steering motor assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2013 - ] | |
| While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly | Front suspension (lower ball joint) | Refer to INSPECTION [08/2013 - ] |
| Speed sensor circuit*3 | Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 08/2017] | |
| Speed sensor circuit*4 | Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2016 - ] | |
| Torque sensor (Electric power steering column sub-assembly) | - | |
| Power steering motor assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Power steering ECU assembly | Refer to REMOVAL [08/2013 - ] | |
| CAN communication system (w/ Central Gateway ECU) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ] | |
| CAN communication system (w/o Central Gateway ECU) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] | |
| A knocking (or clunking) sound occurs when turning the steering wheel back and forth while power steering is operating | Steering intermediate shaft | Refer to INSTALLATION [08/2016 - 08/2017] |
| Power steering ECU assembly | Refer to REMOVAL [08/2013 - ] | |
| Noise occurs when turning the steering wheel during low-speed driving | Steering gear assembly | Refer to REMOVAL [08/2013 - ] |
| Electric power steering column sub-assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| Friction occurs when turning the steering wheel during low-speed driving | Power steering motor assembly | Refer to DISASSEMBLY [08/2013 - ] |
| Electric power steering column sub-assembly | Refer to DISASSEMBLY [08/2013 - ] | |
| A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped | Power steering motor assembly | Refer to DISASSEMBLY [08/2013 - ] |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock with the vehicle stopped | Steering gear assembly | Refer to REMOVAL [08/2013 - ] |
| Electric power steering column sub-assembly | Refer to DISASSEMBLY [08/2013 - ] |
*1: for 2ZR-FAE
*2: for 2ZR-FE
*3: w/o VSC
*4: w/ VSC