Lexus ES: System Description
Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System(for Hv Model) / 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 |
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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,U029387,U115187)
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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Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a lighting system DTC is stored, the headlight ECU sub-assembly and forward recognition camera stores the current vehicle state as freeze frame data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (
Inspection
INSPECTION CAUTION / NOTICE / HINT CAUTION: Be careful so that fingers and clothing do not get caught in the moving parts when performing this test. PROCEDURE 1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY (a) Check the HI operation. (1) Connect a positive (+) lead from the auxiliary battery to termi
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