System Diagram

WARNING: This page is about a different car, the 2006 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Supplemental Restraint System Diagram (1 Of 2)

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Fig 2: Supplemental Restraint System Diagram (2 Of 2)

SYSTEM DIAGRAM REFERENCE

Transmitting ECU (Transmitter)	Receiving ECU	Signals	Communication method
Center Airbag Sensor Assembly	A/C Amplifier	Passenger seat buckle SW signal (Swing register control)	BEAN
Center Airbag Sensor Assembly	Combination Meter	A/B warning ON demand signal Diagnosis signal (DTC)	BEAN
Combination Meter	Center Airbag Sensor Assembly	Vehicle speed signal	BEAN
Body ECU	Center Airbag Sensor Assembly	STP SW signal	BEAN
ECM	Center Airbag Sensor Assembly	Test mode signal Shift position signal Throttle opening angle information signal E/G speed signal	BEAN - CAN
Center Airbag Sensor Assembly	ECM	Collision detection signal (Fuel cut)	BEAN - CAN