Toyota CH-R Service Manual: System Description

• The engine switch is on (ACC) or on (IG).

  HINT:

  When the engine switch is turned on (ACC) or on (IG) and the key and certification ECU (smart key ECU assembly) are verified, the steering is unlocked.

• The engine switch is pressed.
• The brake pedal is depressed so that the engine can be started.
• 30 seconds have elapsed 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 engine switch is being pushed. The ID code box (immobiliser code ECU) uses the S code to determine whether the certification ECU (smart key ECU assembly) is authorized. The steering lock ECU (steering lock actuator or upper bracket assembly) uses the L code to determine whether the ID code box (immobiliser code ECU) is authorized.

• The engine switch is off.
• The shift lever is in P.
• A door is opened or a door lock operation (door lock, wireless door lock or key-linked lock operation*) is performed.

  HINT:

  *: This is the lock/unlock operation with the mechanical key.

Parts Location

PARTS LOCATION ILLUSTRATION *1 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - - ILLUSTRATION *1 MAIN BODY ECU (MULTIP ...

System Diagram

SYSTEM DIAGRAM Circuit Description Component Outline Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly) The steering i ...

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