Lexus ES: 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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TERMINALS OF ECU TERMINALS OF ECU *a Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) - - HINT:
As a waterproof connector is used for the brake actuator
TEST MODE PROCEDURE NOTICE:
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Aft
TEST MODE PROCEDURE NOTICE:
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Aft
SEE MORE:
FREEZE FRAME DATA DESCRIPTION The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whethe
PARTS LOCATION ILLUSTRATION *1 VEHICLE APPROACHING SPEAKER ASSEMBLY *2 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) ILLUSTRATION *1 HYBRID VEHICLE CONTROL ECU *2 VEHICLE APPROACHING SPEAKER CONTROLLER *3 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *4
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