FixVault

System Diagram

Fig 1: Engine Immobilizer System Diagram
G04049148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table: 

COMMUNICATION TABLE

Transmitting ECU (Transmitter) Receiving ECU (Receiver) Signals Communication method
Certification ECU Main body ECU RH
  • Security indicator light flash signal
  • Security indicator light illumination signal
  • Immobilizer system set/unset signal
BEAN
Power source control ECU Certification ECU Key code recognition signal BEAN
ID code box Certification ECU DTC (B2791) signal LIN
ID code box Steering lock ECU
  • Steering lock release signal
  • Matching request random number signal
LIN
ID code box Certification ECU Matching request random number signal LIN