Fail-Safe Chart
If a problem occurs in the power steering system, the P/S warning light will come on in the combination meter and steering power assist will be stopped, fixed at a particular point, or decreased simultaneously to protect the system.
POWER STEERING SYSTEM:
| DTC No. | Detection Condition | Fail-safe |
|---|---|---|
| C1513 | Torque sensor malfunction | Power assist stops |
| C1514 | ||
| C1521 | Motor malfunction | |
| C1524 | ||
| C1528 | Motor rotation angle sensor malfunction | |
| C1531 | ECU malfunction | |
| C1532 | ||
| C1533 | Assist force restricted | |
| C1554 | Power source relay malfunction | Power assist stops |
| C1555 | Motor relay malfunction | |
| U0073 | CAN bus malfunction | Amount of power assist is locked at the 140 km/h (87 mph) level of power assist |
| U0100 | ECM communication error | Power assist stops |
| U0129 | Skid control ECU communication error | Amount of power assist is locked at the 140 km/h (87 mph) level of power assist |
HINT:
The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal if the steering wheel is not turned for approximately 10 minutes with the engine idling.