System Description [09/2014 - ]

UNLOCK OPERATION CONDITIONS FOR STEERING LOCK
1. When the following condition is met, the unlock operation is performed.
  1. The power switch is on (ACC) or on (IG).
    HINT:
    
    When the power switch is turned on (ACC) or on (IG) and the key and certification ECU (smart key ECU assembly) are verified, the steering is unlocked.
2. When any of the following conditions are met, key verification is performed.
  - The power switch is pressed.
  - The brake pedal is depressed so that the hybrid control system can be started.
  - 30 seconds elapse after opening and closing a door.
  HINT:
  - Key verification occurs when the code emitted from the key and the code stored by the certification ECU (smart key ECU assembly) are compared to check that they match.
  - Certification ECU (smart key ECU assembly) verification occurs when the S code and L code are verified while the engine is being started or the power switch is being pushed. The ID code box (immobilizer code ECU) uses the S code to determine whether the certification ECU (smart key ECU assembly) is authorized. The steering lock ECU uses the L code to determine whether the ID code box (immobilizer code ECU) is authorized.
LOCK OPERATION CONDITIONS FOR STEERING LOCK
1. When all of the following conditions are met and the certification ECU (smart key ECU assembly) has been verified, the lock operation is performed.
  1. The power switch is off.
  2. The shift lever is in P.
  3. Open or close a door or perform a door lock operation (smart door lock, wireless door lock or key-linked lock*).
    HINT:
    
    *: This is the lock/unlock operation with the mechanical key.
WARNING FUNCTION
1. A check smart access system message is displayed on the multi-information display in the combination meter assembly when one of the following occurs: 1) A vehicle speed signal malfunction is detected, 2) a malfunction that interferes with steering lock ECU operation is detected, or 3) an IG circuit malfunction is detected.
  If a malfunction which results in the message being displayed, the hybrid control system cannot be started once it is turned off.
  
  HINT:
  
  DTCs are stored in all cases listed above.
STEERING LOCK ECU DESCRIPTION
1. The steering lock ECU is built into the steering lock actuator assembly of the steering column assembly.
2. The steering lock ECU is not connected to the CAN communication system. However, the steering lock ECU is connected to the certification ECU (smart key ECU assembly) via LIN communication and communicates with other components via CAN communication through the certification ECU (smart key ECU assembly).