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

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:

  • Engine running, vehicle speed exceeding 0 km/h (0 mph)
  • Drivemode "Sport S+", "Sport S" or "Custom" (Power) is selected.

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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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 ICS Detection Area Adjustment Incomplete (C1AF0)

DESCRIPTION When ICS detection area adjustment is incomplete, the clearance warning ECU assembly stores DTC C1AF0. DTC No. Detection Item DTC Detection Condition Trouble Area C1AF0 ICS Detection Area Adjustment Incomplete Parking support brake system detection area adjustment incomp

 Fail-safe Chart

FAIL-SAFE CHART PROTECTION FUNCTION (a) The windshield wiper motor assembly operates the following protection functions if it detects an abnormal condition, in order to protect the wiper and washer system. Item Protection Content Conditions to Return to Normal Condition Overheat protectio

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