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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High Voltage Fuse Accumulated Load History (P0A9563)
DESCRIPTION The battery ECU assembly estimates the thermal load of the high voltage fuse. If the accumulated thermal load exceeds the threshold, the battery ECU assembly will store this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0A9563 H
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Power Window Control System (for Gasoline Model) DTC No. Detection Item Link B2311 Power Window Motor Malfunction B2311 Power Window Motor Malfunction B2311 Power Window Motor Malfunction B2311 Power Window Motor Malfunction
