The Steering Lock Cannot Be Released (Cannot Start the Engine)

The Steering Lock Cannot be Released (Cannot Start the Engine)

Circuit description

The steering lock actuator ASSY (Steering lock ECM) drives the motor that inserts the lock bar into the steering column to lock the steering wheel.
There may be cases where the steering lock bar becomes stuck in the steering column lock hole, causing the steering lock to become unable to be released. In this case, in the same manner as for conventional plate key vehicles, the lock bar can be worked out of the hole by performing the engine start operation while rocking the steering wheel.
When replacing the smart key computer ASSY (Collation ECM) or the engine control computer, there may be cases where the steering cannot be unlocked or the engine cannot be started unless registration and initializing operation is carried out.
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, confirm that trouble symptoms do not reoccur.
^ Confirm that no diagnostic codes are output. (If diagnostic codes are output, firstly perform a diagnostic code flow chart check.)
^ When replacing the smart key computer ASSY (Collation ECM) or the steering lock actuator ASSY (Steering lock ECM), please check the applicable precautions, and refer to the "Registration manual for immobilizer".
^ After replacing the steering lock actuator ASSY (Steering lock ECM), before starting the engine be sure to turn the steering mechanism to the left and right to confirm that the steering is not locked. If the steering is locked, perform the steering lock procedure (open and close any door when the vehicle is in the IG OFF state) and then unlock the steering (press the push button start switch). This will prevent the engine from being started while the steering lock is on.