Lexus ES: System Diagram

Lexus ES (XZ10) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / System Diagram

SYSTEM DIAGRAM

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
Skid control ECU (brake actuator assembly)	Steering angle sensor	Steering angle sensor request signal	CAN communication line
Steering angle sensor	Skid control ECU (brake actuator assembly)	Steering angle sensor signal	CAN communication line
Skid control ECU (brake actuator assembly)	Yaw rate and acceleration sensor (airbag ECU assembly)	Yaw rate and acceleration request signal	CAN communication line
Yaw rate and acceleration sensor (airbag ECU assembly)	Skid control ECU (brake actuator assembly)	Yaw rate and acceleration signal	CAN communication line
Skid control ECU (brake actuator assembly)	ECM	Vehicle speed signal Electronically controlled brake system data signal	CAN communication line
ECM	Skid control ECU (brake actuator assembly)	Shift position signal Throttle position signal Engine speed signal SFI system data signal	CAN communication line
Skid control ECU (brake actuator assembly)	Power steering ECU (rack and pinion power steering gear assembly)	Vehicle speed signal Electronically controlled brake system data signal	CAN communication line
Main body ECU (multiplex network body ECU)	Skid control ECU (brake actuator assembly)	Driver seat belt buckle switch signal Driver side courtesy switch signal	CAN communication line
Skid control ECU (brake actuator assembly)	Combination meter assembly	ABS warning light signal Brake warning light / red (malfunction) signal Slip indicator light signal VSC OFF indicator light signal Multi-information display (Traction Control Turned Off) signal Brake hold standby indicator light signal Brake hold operated indicator light signal Multi-information display (Secondary Collision Brake System Malfunction) signal Multi-information display (Brake hold system malfunction) signal Vehicle speed signal	CAN communication line
Airbag ECU assembly	Skid control ECU (brake actuator assembly)	Secondary collision brake request signal	CAN communication line

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Adjustment

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Hybrid/EV Battery Positive Contactor Circuit Stuck Closed (P0AA000)

DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects a stuck closed malfunction of a system main relay on the HV battery positive (+) terminal side. The cause of this malfunction may be one of the following: Inverter voltage sensor (VH) internal circuit malfunction Voltage s

Lexus ES: System Diagram

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System Diagram

Terminals Of Ecu

Test Mode Procedure

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Adjustment

Hybrid/EV Battery Positive Contactor Circuit Stuck Closed (P0AA000)