System Diagram
WARNING: This page is about a different car, the 2011 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
COMMUNICATION TABLE
| Transmitting ECU (Transmitter) | Receiving ECU | Signal | Communication Method |
|---|---|---|---|
| Main body ECU (multiplex network body ECU) | Certification ECU (smart key ECU assembly) | Courtesy light switch signal | CAN |
| Door lock output signal | |||
| Door lock position switch signal | |||
| Driver door key operated switch signal | |||
| IG signal | |||
| ACC switch signal | |||
| Certification ECU (smart key ECU assembly) | Main body ECU (multiplex network body ECU) | Illumination light request signal | CAN |
| Light answer back signal | |||
| Door lock/unlock request signal | |||
| Back door output request signal | |||
| Wireless door lock buzzer request signal | |||
| Certification ECU (smart key ECU assembly) | Combination meter assembly | Meter buzzer single tone request signal | CAN |
| Meter buzzer intermittent tone request signal | |||
| Meter buzzer continuous tone request signal | |||
| Key loss warning signal | |||
| Auto power off operation request signal | |||
| Key not detected warning signal | |||
| Low key battery warning signal | |||
| Shift position warning signal | |||
| Steering lock malfunction warning signal | |||
| Steering lock not-released warning signal | |||
| Immobilizer system certification completion signal | |||
| Emergency operation support display request signal | |||
| Engine start method display request signal | |||
| Combination meter assembly |
|
Vehicle speed signal | CAN |
| Steering lock ECU (steering lock actuator assembly) | Certification ECU (smart key ECU assembly) | Encryption code signal | LIN |
| Encryption code finish signal | |||
| Encryption calculate fixed number memory requirement signal | |||
| During entry control signal |