Failsafe List
- Failsafe list
- When the power steering computer ASSY detects a malfunction, to protect the system it suspends power assist or continues to perform control under special conditions.
Malfunction type Fail safe - Torque sensor malfunction
- Motor rotation angle sensor malfunction
- Power steering motor malfunction
- Power steering computer ASSY malfunction (other than the temperature sensor system)
Power assist is suspended. Power steering computer ASSY malfunction (temperature sensor system) - System overheat protection control is switched to a specification that doesn't use a board temperature sensor, and control is continued.
- Control is performed under a limited power assist level.
EEPROM error Control is performed under the default map. - CAN Communication Error
- Speed sensor system malfunction
- Skid control computer (brake actuator ASSY) communication malfunction
It is fixed to the same characteristics as when travelling at 100 km/h, and power steering control is continued. When ECM internal temperature is high (not a malfunction) The power assist level is limited, or assist is temporarily suspended. Power supply voltage drop (not a malfunction) The power assist level is limited, or assist is temporarily suspended. NOTE:- If there is repeated steering wheel operation when the vehicle is stopped or driving slowly, or the steering wheel is kept at its turning angle limit for a long period of time, the power assist level may be reduced in order to prevent the motor or computer from overheating. In this case, the system will return to normal if there is no steering wheel operation for approximately 10 minutes with the engine at idle speed.
- If the battery is not sufficiently charged or there is a temporary drop in voltage, the power assist level may be reduced and the P/S warning light may be turned on. In this case, it will return to a normal state when the battery voltage recovers.
- If the ignition switch is accidentally turned OFF during driving, the power assist level is gradually reduced and then the assist is suspended. This is not a malfunction.