System Diagram
WARNING: This page is about a different car, the 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
COMMUNICATION TABLE:
| Transmitting ECU (Transmitter) |
Receiving ECU (Receiver) |
Signal | Communication method |
|---|---|---|---|
| ECM | Power source control ECU | Engine rotation signal | CAN/BEAN |
| Meter ECU | Power source control ECU | Vehicle speed signal | BEAN/Local communication |
| Steering lock ECU | Power source control ECU | Steering lock/unlock signal | LIN/Local communication |
| Shift lock control ECU | Power source control ECU | Shift position signal | BEAN/Local communication |
| Certification ECU | Power source control ECU | LIN master signal | LIN |
| Power source control ECU | Certification ECU | ID required signal | LIN |
| Key existence condition signal | BEAN |