Steering. Yaris. Ncp93, 131
Power Assist Systems. Yaris. Ncp93, 131
Power Steering System (For Hatchback) -- 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 | See page |
| Heavy steering | Front tires (improperly inflated, unevenly worn) | YARIS_NCP93 RM000000OQN01OX.html |
| Front wheel alignment (incorrect) | YARIS_NCP93 RM000001BCN01XX.html | |
| Front suspension (lower ball joint) | YARIS_NCP93 RM000001AAE012X.html | |
| Steering gear | YARIS_NCP93 RM0000029T502SX.html | |
| Power steering motor assembly | YARIS_NCP93 RM000000UD004ZX.html | |
| Battery and power source system | YARIS_NCP93 RM000001GNJ010X.html | |
| Power source voltage of power steering ECU assembly | YARIS_NCP93 RM000001AKF022X.html | |
| Power steering ECU assembly | YARIS_NCP93 RM000002XN603ZX.html | |
| Vehicle condition (Steering wheel is turned from left to right repeatedly with vehicle stopped or heavy load is continuously applied to vehicle) | YARIS_NCP93 RM000001AL8022X.html | |
| Steering effort differs between turning right and left or uneven | Steering center point (zero point) recorded incorrectly | YARIS_NCP93 RM000000OSZ018X.html |
| Front tires (improperly inflated, unevenly worn) | YARIS_NCP93 RM000000OQN01OX.html | |
| Front wheel alignment (incorrect) | YARIS_NCP93 RM000001BCN01XX.html | |
| Front suspension (lower ball joint) | YARIS_NCP93 RM000001AAE012X.html | |
| Steering gear | YARIS_NCP93 RM0000029T502SX.html | |
| Torque sensor (built into steering column assembly) | YARIS_NCP93 RM000000UCZ031X.html | |
| Power steering motor assembly | YARIS_NCP93 RM000000UD004ZX.html | |
| Steering column assembly | YARIS_NCP93 RM000000UCZ031X.html | |
| Power steering ECU assembly | YARIS_NCP93 RM000002XN603ZX.html | |
| While driving, steering effort does not change in accordance with vehicle speed or steering wheel does not return properly | Front suspension (lower ball joint) | YARIS_NCP93 RM000001AAE012X.html |
| Front speed sensor | YARIS_NCP93 RM000001BXX01FX.html | |
| Rear speed sensor | YARIS_NCP93 RM000001BYL01IX.html | |
| Brake actuator assembly (Skid control ECU) | YARIS_NCP93 RM000001BXP02KX.html | |
| Torque sensor (built into steering column assembly) | YARIS_NCP93 RM000000UCZ031X.html | |
| Power steering motor assembly | YARIS_NCP93 RM000000UD004ZX.html | |
| Power steering ECU assembly | YARIS_NCP93 RM000002XN603ZX.html | |
| CAN communication system (for Hatchback except Separate Type Yaw Rate Sensor) | YARIS_NCP93 RM000001RSO05UX.html | |
| CAN communication system (for Hatchback with Separate Type Yaw Rate Sensor) | YARIS_NCP93 RM000001RSO066X.html | |
| Friction occurs when turning steering wheel during low speed driving | Power steering motor assembly | YARIS_NCP93 RM000000UD004ZX.html |
| Steering column assembly | YARIS_NCP93 RM000000UCZ031X.html | |
| Spiral cable sub-assembly | YARIS_NCP93 RM000000UWB07GX.html | |
| Interference between the steering wheel and column cover | YARIS_NCP93 RM000000UCZ031X.html | |
| High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped | Power steering motor assembly | YARIS_NCP93 RM000000UD004ZX.html |
| Installation state of steering wheel | YARIS_NCP93 RM0000036HA00UX.html | |
| Steering wheel vibrates and noise occurs when turning steering wheel with vehicle stopped | Steering gear | YARIS_NCP93 RM0000029T502SX.html |
| Steering column assembly | YARIS_NCP93 RM000000UCZ031X.html | |
| Installation state of steering wheel | YARIS_NCP93 RM0000036HA00UX.html | |
| EPS warning light remains on | EPS warning light circuit | YARIS_NCP93 RM00000277E036X.html |