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 | | LIN |
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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 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 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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DESCRIPTION The steering sensor receives the following switch information:
Light control switch in DRL OFF*, tail, head or AUTO position
Dimmer switch in high, low or high flash (pass) position
*: w/ DRL OFF Switch
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the ma
You must only use unleaded gasoline.
Select unleaded gasoline with an
octane rating of 87 (Research
Octane Number 91) or higher
required for optimum engine performance
and fuel economy. If the
octane rating is less than 87, damage
to the engine may occur and
may void the vehicle warranty.
A
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