Lexus ES: System Diagram
SYSTEM DIAGRAM

Communication Table
| Transmitter | Receiver | Signal | Communication Method |
| Rear Window Defogger Switch (Air Conditioning Control Assembly) | Air Conditioning Amplifier Assembly | Rear Window Defogger Switch Signal | LIN |
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SYSTEM DESCRIPTION GENERAL (a) The rear window defogger wire (back window glass) is attached to the inside of the rear window and defogs the window surface quickly when the rear window defogger switch
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the window defogger system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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OPERATION CHECK CHECK WINDOW DEFOGGER SYSTEM (a) Turn the power switch on (IG). (b) Check that the rear window defogger wire becomes warm by operating the rear window defogger switch of the air condit
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InspectionINSPECTION PROCEDURE 1. INSPECT FUEL TANK CAP ASSEMBLY (a) Visually check that the fuel tank cap assembly and gasket are not deformed or damaged. If the result is not as specified, replace the fuel tank cap assembly. *a Gasket (b) Confirm that ID mark Z is pr
DESCRIPTION The grille shutter ECU and hybrid vehicle control ECU assembly send and receive signals via CAN communication. If a communication error occurs between the grille shutter ECU and hybrid vehicle control ECU assembly, the ECM stores this DTC. DTC No. Detection Item DTC Detection Cond
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