B2781

DTC B2781 Steering Lock ECU Open/Short

Circuit description

The steering lock ECM and steering lock motor are integrated into the steering lock actuator ASSY.
The steering lock actuator ASSY (Steering lock ECM) uses the steering lock motor lock position sensor to detect the lock/unlock position.
The steering lock actuator ASSY (Steering lock ECM) is input with a lock/unlock command signal from the smart key computer ASSY (Collation ECM) and returns a lock operation signal.
As the steering lock actuator ASSY (Steering lock ECM) is not connected to CAN communication, CAN communication with external parts is performed via the LIN communication-connected smart key computer ASSY (Collation ECM).








Vehicle state and fail safe measures during detection





Related current data display and work support





Inspection steps

CAUTION:
^ After repair is completed, perform a diagnostic code output confirmation and check that there is no further output of diagnostic codes.
^ When replacing the steering lock actuator ASSY (Steering lock ECM), please check the applicable precautions, and refer to the "Registration manual for immobilizer".

NOTE:
When all ECMs connected to the collation system LIN bus cannot communicate with the smart key computer ASSY (Collation ECM), diagnostic code B2785 is output.