Lexus ES manuals

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

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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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 Installation

INSTALLATION PROCEDURE 1. INSTALL STARTER ASSEMBLY (a) Install the starter assembly with the 2 bolts. Torque: 46 N·m {469 kgf·cm, 34 ft·lbf} (b) Connect the engine wire to the terminal 30 with the nut. Torque: 9.8 N·m {100 kgf·cm, 87 in·lbf} (c) Close the terminal cap. (d) Connect the starte

 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE If DTCs are not output but the malfunction persists, use the following table to determine which circuits to inspect for each problem symptom. HINT: Refer to each inspection procedure for related problem symptoms. Electronically Controlled Brake System Symptom Suspected Ar

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