Lexus ES manuals

Lexus ES: System Diagram

SYSTEM DIAGRAM

Transmitting ECU (Transmitter)

Receiving ECU

Signal

Communication Method

Skid control ECU (Brake booster with master cylinder assembly)

Power steering ECU (Rack and pinion power steering gear assembly)

  • Target steering angle signal
  • Target relative angle signal

CAN communication line

Main body ECU (Multiplex network body ECU)

Skid control ECU (Brake booster with master cylinder assembly)

Driver side seat belt buckle switch signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Hybrid vehicle control ECU

  • Wheel speed signal
  • Electronically controlled brake system data signal

CAN communication line

Hybrid vehicle control ECU

Skid control ECU (Brake booster with master cylinder assembly)

  • Shift lever position signal
  • Driving torque request signal
  • Accelerator pedal position signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Steering angle sensor

Steering angle sensor request signal

CAN communication line

Steering angle sensor

Skid control ECU (Brake booster with master cylinder assembly)

Steering angle sensor signal

CAN communication line

Skid control ECU (Brake booster with master cylinder 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 booster with master cylinder assembly)

Yaw rate and acceleration signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Parking brake ECU (Brake actuator assembly)

  • Vehicle speed signal
  • Brake hold status signal
  • Electric parking brake lock request signal

CAN communication line

Parking brake ECU (Brake actuator assembly)

Skid control ECU (Brake booster with master cylinder assembly)

  • Electric parking brake switch assembly status signal
  • Electric parking brake lock status signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Combination meter assembly

  • ABS warning light signal
  • Brake warning light / red (malfunction) signal
  • Brake warning light / yellow (minor malfunction) signal
  • Multi-information display (Traction Control Turned Off) signal
  • Multi-information display (secondary collision brake system malfunction) signal
  • Multi-information display (brake hold system malfunction) signal
  • VSC OFF indicator light signal
  • Slip indicator light signal
  • Brake hold standby indicator light signal
  • Brake hold operated indicator light signal
  • Meter buzzer signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Certification ECU (Smart key ECU assembly)

  • Vehicle speed (SP1) signal
  • Stop light switch assembly signal

CAN communication line

Certification ECU (Smart key ECU assembly)

Skid control ECU (Brake booster with master cylinder assembly)

Push start switch signal

CAN communication line

Skid control ECU (Brake booster with master cylinder assembly)

Inverter with converter assembly

  • Regenerative cooperation request torque signal
  • Regenerative execution request signal
  • Torque down request signal
  • Torque up request signal

CAN communication line

Inverter with converter assembly

Skid control ECU (Brake booster with master cylinder assembly)

  • Brake request torque signal
  • Available regenerative cooperation torque signal
  • Actual regenerative cooperation torque signal

CAN communication line

Airbag ECU assembly

Skid control ECU (Brake booster with master cylinder assembly)

Secondary collision brake request signal

CAN communication line

READ NEXT:

 Terminals Of Ecu

TERMINALS OF ECU TERMINALS OF ECU *a Component without harness connected (Skid Control ECU (Brake Booster with Master Cylinder Assembly)) - - Terminal No. (Symbol) Terminal Descripti

 Test Mode Procedure

TEST MODE PROCEDURE WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK (a) When the power switch is turned on (IG), check that the ABS warning, brake warning / red (malfunction), brake warning / yellow (

 TRAC does not Operate

DESCRIPTION When ABS, TRAC or VSC is operating, the skid control ECU (brake booster with master cylinder assembly) blinks the slip indicator light to inform the driver that slippage occurred. When in

SEE MORE:

 Lost Communication between Drive Motor "A" and HV ECU Circuit Intermittent (P31241F,P312487)

DESCRIPTION The motor generator control ECU, which is built into the inverter with converter assembly, controls the motor (MG2) based on commands from the hybrid vehicle control ECU. The motor generator control ECU (MG ECU) monitors communication data and detects malfunctions. DTC No. Detection

 Installation

INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL REAR UPPER COIL SPRING INSULATOR (a) Install the rear upper coil spring insulator to the vehicle. 2. INSTALL REAR LOWER COIL SPRING

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