SYSTEM DIAGRAM
Component | Function |
---|---|
Front door outside handle assembly | Receives request signals from the certification ECU (smart key ECU assembly) via the built-in electrical key antenna (front door) and forms the vehicle exterior detection area. Uses the built-in touch sensor (lock sensor/unlock sensor) to detect the operation of the front door outside handle assembly and sends signals to the certification ECU (smart key ECU assembly). |
Rear door outside handle assembly | Receives request signals from the certification ECU (smart key ECU assembly) via the built-in electrical key antenna (rear door) and forms the vehicle exterior detection area. Uses the built-in touch sensor (lock sensor/unlock sensor) to detect the operation of the rear door outside handle assembly and sends signals to the certification ECU (smart key ECU assembly). |
No. 1 indoor electrical key antenna assembly (front floor) No. 2 indoor electrical key antenna assembly (rear floor) No. 3 indoor electrical key antenna assembly (inside luggage compartment) | Receives the request code from the certification ECU (smart key ECU assembly) and forms the vehicle interior detection area. |
Electrical key antenna (outside luggage compartment) | Receives the request code from the certification ECU (smart key ECU assembly) and forms the back door exterior detection area. |
Back door opener switch assembly | Sends switch operation signals to the certification ECU (smart key ECU assembly). |
Door control receiver | Receives the smart access system with push-button start code/wireless code sent from the electrical key transmitter sub-assembly and sends it to the certification ECU (smart key ECU assembly). |
Wireless door lock buzzer | Sounds when warning functions operate in accordance with certification ECU (smart key ECU assembly) control. |
Electrical key transmitter sub-assembly | Sends the ID code upon receiving a request signal. |
Certification ECU (smart key ECU assembly) | Sends request codes to each electrical key antenna. Distinguishes and verifies the ID code from the electrical key transmitter sub-assembly and sends signals to each ECU in response to operated functions (controls entire system). Performs encryption code communication with the ID code box (immobiliser code ECU) when ignition operations are performed. |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Climate Control Seat System: Terminals Of Ecu
TERMINALS OF ECU CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the J43 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): PBD Unit Pulse Sensor LH Circuit (B2226)
DESCRIPTION This DTC is stored when the multiplex network door ECU detects an error in the power back door unit assembly set LH pulse signal. DTC No. Detection Item DTC Detection Condition Trouble Area B2226 PBD Unit Pulse Sensor LH Circuit Multiplex network door ECU detects power b ...