Problem Symptoms Table [08/2017 - 08/2018]
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 | Proceed to |
|---|---|---|
| Hard steering | Tires (Improperly inflated) | Refer to INSPECTION [08/2015 - ] |
| Power steering fluid level (Low) | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Drive belt (Loose) | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT [08/2017 - 08/2018] | |
| Steering system joints (Worn) | - | |
| Suspension arm ball joints (Worn) | Refer to INSPECTION [08/2015 - ] | |
| Steering column (Binding) | - | |
| Vane pump assembly | Refer to INSPECTION [08/2015 - 08/2018] | |
| Power steering gear assembly | Refer to INSPECTION [08/2015 - ] | |
| Poor return | Tires (Improperly inflated) | Refer to INSPECTION [08/2015 - ] |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT [08/2017 - 08/2018] | |
| Steering column (Binding) | - | |
| Power steering gear assembly | Refer to INSPECTION [08/2015 - ] | |
| Excessive play | Steering system joints (Worn) | - |
| Suspension arm ball joints (Worn) | Refer to ADJUSTMENT [08/2017 - 08/2018] | |
| Intermediate shaft, Sliding yoke (Worn) | - | |
| Front wheel bearing (Worn) | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Power steering gear assembly | Refer to INSPECTION [08/2015 - ] | |
| Abnormal noise | Power steering fluid level (Low) | Refer to ON-VEHICLE INSPECTION [08/2015 - ] |
| Steering system joints (Worn) | - | |
| Vane pump assembly | Refer to INSPECTION [08/2015 - 08/2018] | |
| Power steering gear assembly | Refer to INSPECTION [08/2015 - ] | |
| Power steering system does not operate | IG power source circuit | Refer to IG Power Source Circuit [08/2017 - 08/2019] |
| VFC power steering solenoid circuit | Refer to DTC C15F0: VFC Solenoid Circuit [08/2017 - 08/2019] | |
| Power steering ECU communication circuit | Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [08/2017 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - ] | |
| Steering angle sensor | Refer to DTC C15F1: Steering Angle Sensor Circuit [08/2017 - ] | |
| SFI system (for 3UR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] | |
| SFI system (for 3UR-FBE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] | |
| Power steering ECU assembly | Refer to TERMINALS OF ECU [08/2017 - 08/2019] | |
| When the vehicle is idling, steering effort is high (with the vehicle stopped) | Tire size and tire pressure | Refer to INSPECTION [08/2015 - ] |
| Power steering fluid level and pressure | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Front wheel alignment | Refer to ADJUSTMENT [08/2017 - 08/2018] | |
| IG power source circuit | Refer to IG Power Source Circuit [08/2017 - 08/2019] | |
| VFC power steering solenoid circuit | Refer to DTC C15F0: VFC Solenoid Circuit [08/2017 - 08/2019] | |
| Power steering ECU communication circuit | Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [08/2017 - ] | |
| Steering angle sensor | Refer to DTC C15F1: Steering Angle Sensor Circuit [08/2017 - ] | |
| Power steering ECU assembly | Refer to TERMINALS OF ECU [08/2017 - 08/2019] | |
| Even if vehicle speed increases, steering effort does not increase | VFC power steering solenoid circuit | Refer to DTC C15F0: VFC Solenoid Circuit [08/2017 - 08/2019] |
| Power steering ECU communication circuit | Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [08/2017 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - ] | |
| Power steering ECU assembly | Refer to TERMINALS OF ECU [08/2017 - 08/2019] | |
| Power steering warning light is abnormal | Power steering warning light circuit | Refer to Power Steering Warning Light Circuit [08/2017 - 08/2019] |