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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Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during engine unit removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/
Doors
Unlocking and locking the doors
from the outside
■ Smart access system with pushbutton
start
Carry the electronic key to enable this
function.
Grip the driver's door handle to
unlock the door. Holding the
driver's door handle for approximately
2 seconds unlocks all the
doors. Gr
