Lexus ES manuals

Lexus ES: System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU

Receiving ECU

Signal

Communication Method

Certification ECU (smart key ECU assembly)

Main body ECU (multiplex network body ECU)

Luggage electrical key switch signal

CAN

Combination meter assembly

Main body ECU (multiplex network body ECU)

Vehicle speed signal

CAN

Main body ECU (multiplex network body ECU)

Luggage closer motor assembly

  • Luggage electrical key switch signal
  • Vehicle speed signal
  • Luggage door opening cancel switch assembly signal
  • Luggage compartment door opening switch signal

CAN

Main body ECU (multiplex network body ECU)

Kick door control sensor

  • ACC signal
  • IG signal

LIN

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 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the power trunk lid system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT

 Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS NOTICE: If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history h

 Operation Check

OPERATION CHECK CHECK CUSTOMIZE PARAMETERS (a) The operation check below is based on the non-customized initial condition of the vehicle. Click here OPERATION CONDITIONS (a) Operation conditions wh

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 Check Bus 4 Line for Short to +B

DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and termin

 Control Module Communication Bus "A" Off (U0073,U0126,U0129,U0140,U0155)

DESCRIPTION These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication line. DTC No. Detection Item DTC Detection Condition Trouble Area U0073 Control Module Communication Bus "A" Off Control module communicat

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