DTC C1531 Motor output current failure 1 DTC C1532 Motor output current failure 2
caution
If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, CAN Bus Diagnostics Table ).
Whenever ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION
Motor current is supplied from the EPS-ECU.
FUNCTION
The motor control circuit has two systems, and the EPS-ECU monitors the current value of the motor.
TROUBLE JUDGMENT
Check Conditions
Engine start
Judgment Criterion
When the EPS-ECU determines that the motor current drive circuit is faulty.
Fail Safe, Back Up Function
The EPS-ECU is in motor control output limit state, turns on the electric steering warning display, and sets DTC C1531 and C1532.
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