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Power is supplied to the EPS-ECU from the battery.
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The motor current is controlled according to the information
on motor and resolver, and the information on CAN bus.
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Judgement Criterion
The system data is out of the prestored control range, and the microcomputer determines
that there is an internal problem.
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Fail Safe, Back Up Function
The EPS-ECU stops the motor control and illuminates the electric power steering
warning display, then sets the diagnosis code No. C1550.
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- Malfunction of CAN bus line
- Malfunction of the EPS-ECU
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