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
SEE MORE:
SYSTEM DIAGRAM *1 Purge Valve (Purge VSV) *2 Fuel Tank Cap Assembly *3 Fuel Tank Assembly *4 Canister Filter *5 Fuel Cut-off Valve *6 ECM *7 Canister Pump Module (Leak Detection Pump Sub-assembly) *8 Pump Motor *9 Canister Pressure Sensor *10 Vent Va
INSTALLATION PROCEDURE 1. INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) (a) Connect the flow shutting valve (water by-pass hose assembly) to the transmission oil cooler and slide the clip to secure it. *a 2 to 7 mm (0.0787 to 0.276 in.) *b Paint Mark *c 45° (Tabs of Clip
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