Toyota CH-R Service Manual: System Diagram

Toyota CH-R Service Manual / Steering Column / Steering Lock System / System Diagram

SYSTEM DIAGRAM

Circuit Description

Component	Outline
Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)	The steering is locked and unlocked by communicating with the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) via LIN communication. When the following conditions are met, the steering can be unlocked. The codes (L codes) of the ID code box (immobiliser code ECU) and steering lock match. The codes (S codes) of the ID code box (immobiliser code ECU) and certification ECU (smart key ECU assembly) match. The certification ECU (smart key ECU assembly) and key ID codes match.
Certification ECU (Smart Key ECU Assembly)	The ID code of the key the user is carrying is sent to the door control receiver. The certification ECU (smart key ECU assembly) compares the key ID code it receives from the door control receiver with its own ID code. If they match, the certification ECU (smart key ECU assembly) permits the steering lock ECU (steering lock actuator or upper bracket assembly) to turn the power on, start the engine and unlock and lock the steering. Outputs a command to supply power to the steering lock motor based on the power source mode, shift position and vehicle speed signal.
ID Code Box (Immobiliser Code ECU)	Receives immobiliser set and unset commands from the certification ECU (smart key ECU assembly) via LIN communication and sends them to the ECM.

System Description

SYSTEM DESCRIPTION UNLOCK OPERATION CONDITIONS FOR STEERING LOCK (a) When the following condition is met, the unlock operation is performed. The engine switch is on (ACC) or on (IG). HINT ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the steering lock system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT ...

Other materials:

Toyota CH-R Service Manual > Smart Key System(for Start Function): Lost Communication with ECM / PCM (U0100,U0140,U0142,U0155,U1117)
DESCRIPTION These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly), ECM, main body ECU (multiplex network body ECU) or combination meter assembly, and data from the option connector (bus buffer ECU) cannot be received. ...

Toyota CH-R Owners Manual > Driving procedures: Brake Hold
The brake hold system keeps the brake applied when the shift lever in any position other than P or R with the system on and the brake pedal has been depressed to stop the vehicle. The system releases the brake when the accelerator pedal is depressed with the shift lever in any position other t ...