B2788
DTC B2788 IGN2 input malfunctionCircuit description
This diagnosis code is output when the steering lock actuator ASSY (Steering lock ECM) detects an IG2 power supply malfunction.
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
Circuit figure
Inspection steps
CAUTION:
^ Check the fuse in this circuit before performing troubleshooting.
^ The steering lock system is equipped with functions that use multiplex communication. Firstly, please follow the directions in "How to troubleshoot" and then perform troubleshooting after confirming that there is no malfunction in the communication system.
^ 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".