Lexus ES: System Description
SYSTEM DESCRIPTION
ACTIVE NOISE CONTROL SYSTEM
(a) The active noise control system is a system that detects muffled engine sounds produced in sync that fluctuates according to the engine speed, by using the active noise control microphone and outputs anti-phase control sound through the audio speakers to reduce muffled engine sounds.
The active noise control system includes the following functions.
| Function Name | Function Description | Operation Conditions |
|---|---|---|
| ANC (Active Noise Control) Function | Function that reduces noise by using anti-phase and vibration control sound to interfere with muffled sounds | Engine running |
| ESE (Engine Sound Enhancement) Function | Function that produces realistic engine sounds by adding frequency component sound according to driving conditions such as vehicle speed and accelerator pedal depression | Both of the following conditions are met:
|
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System Diagram
SYSTEM DIAGRAM
Terminals Of Ecu
TERMINALS OF ECU STEREO COMPONENT EQUALIZER ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G15-1 (CANH) P CAN communication signal
Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087,U016487)
DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication With
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Components
COMPONENTS ILLUSTRATION *1 COWL SIDE TRIM BOARD LH *2 FRONT DOOR OPENING TRIM COVER LH *3 FRONT DOOR SCUFF PLATE LH *4 INSTRUMENT SIDE PANEL LH *5 LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY *6 LUGGAGE DOOR OPENING SWITCH (TRUNK AND FUEL SWITCH ASSEMBLY) *7 N
Sliding Roof Switch Assembly
ComponentsCOMPONENTS ILLUSTRATION *1 MAP LIGHT ASSEMBLY *2 MAP LIGHT SUB-ASSEMBLY *3 ROOF CONSOLE BOX INNER COVER - - ● Non-reusable part - - InspectionINSPECTION PROCEDURE 1. INSPECT MAP LIGHT SUB-ASSEMBLY (PANORAMIC MOON ROOF SWITCH) (for Panoramic Moon Roof)
