Toyota Camry Hybrid AHV40 Manual page 189

CH-88
JSTEERING LOCK SYSTEM
D According with the use of the smart key system, a steering lock system which uses a lock/unlock motor
to lock and unlock the steering wheel is used. This system mainly consists of the steering lock assembly,
main body ECU, certification ECU and ID code box.
D The steering lock ECU is integrated in the steering lock assembly, and it controls the lock bar operation
in the steering lock assembly through the control of lock/unlock motor.
D The steering lock ECU detects the position (lock/unlock) of the lock bar and transmits this information
to the main body ECU and certification ECU.
D In this system, the certification ECU determines whether to lock or unlock the steering based on
communication with the main body ECU. Then, the certification ECU sends lock or unlock command
signals to the steering lock ECU through the ID code box. Upon receiving the signals, the steering lock
ECU operates the lock/unlock motor to lock or unlock the steering. For details, see page BE-88.
" A
System Diagram
Steering Lock Assembly
Power Supply for
Lock/Unlock Motor
Lock/ Unlock
Motor
Lock Bar Position
Lock/Unlock
Detection Signal
Detection
Switch
Service Tip
It is not possible to replace only the steering lock ECU in the steering lock assembly. Therefore, if
a malfunction occurs in the ECU, the entire steering lock assembly must be replaced.
CHASSIS - STEERING
Power Supply for
Lock Motor
Unlock Signal
Steering Lock
Local
ECU
Communication
Power Switch
Main Body
ECU
Certification
ECU
ID Code Box
02HCH56TE