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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Blind Spot Monitor Slave Module (C1AB7)
DESCRIPTION This DTC is stored when the blind spot monitor sensor LH detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area C1AB7 Blind Spot Monitor Slave Module The blind spot monitor sensor LH (slave) detects an internal malfunction Blind sp
Removal
REMOVAL PROCEDURE 1. REMOVE LUGGAGE LOCK CONTROL CABLE PLATE Click here 2. REMOVE SWITCH BEZEL (w/ Power Trunk Lid System) Click here 3. REMOVE LUGGAGE COMPARTMENT DOOR COVER Click here 4. REMOVE REAR SPOILER SUB-ASSEMBLY (a) Apply protective tape around the rear spoiler sub-assembly as shown
