Home › Vehicle Interior › Theft Deterrent/Keyless Entry › SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)
Last Modified: 11-27-2007 1.6 U
Service Category: Vehicle Interior Section: Theft Deterrent/Keyless Entry
Model Year: 2008 Model: LX570 Doc ID: RM000000XUE01PX
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): SYSTEM DIAGRAM (2008 LX570)

SYSTEM DIAGRAM





Communication Table:

Sender

Receiver

Signal

Line

Main Body ECU

Certification ECU (Smart key ECU assembly)
  • IG signal
  • ACC signal
  • Engine switch signal
  • Driver side door courtesy light switch signal
  • Passenger side door courtesy light switch signal
  • Rear LH side door courtesy light switch signal
  • Rear RH side door courtesy light switch signal
  • Vehicle type handle signal
  • Back door courtesy light switch signal
  • Back door opener switch signal
  • Wireless door lock buzzer sound signal
  • Door lock position signal

CAN

Main Body ECU

Power back door ECU*

Back door opener switch signal

CAN

Meter ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU

Vehicle speed signal

CAN

Steering Lock ECU

Certification ECU (Smart key ECU assembly)
  • Encryption code signal
  • Encryption code finish signal
  • Encryption calculate fixed number memory requirement signal
  • During entry control signal

LIN

ID Code Box (Immobiliser code ECU)

Certification ECU (Smart key ECU assembly)

Matching request random number signal

LIN

Certification ECU (Smart key ECU assembly)

Meter ECU
  • Inside key existence warning signal
  • Low key battery warning signal
  • Shift position warning signal
  • Meter buzzer request signal
  • Door open indicate signal
  • Steering lock warning signal

CAN

Certification ECU (Smart key ECU assembly)

Main Body ECU
  • Entry door lock signal
  • Entry door unlock signal
  • Entry lock switch signal
  • Door lock/unlock standby control signal

CAN

Certification ECU (Smart key ECU assembly)

Main Body ECU
  • Immobiliser ID entry required signal
  • Key code check signal

LIN

Certification ECU (Smart key ECU assembly)

ID Code Box (Immobiliser code ECU)

Replay code signal

LIN

*: w/ Power Back Door System