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

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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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 Terminals Of Ecu

TERMINALS OF ECU CHECK SWING GRILLE ACTUATOR ASSEMBLY (a) Disconnect the z23 swing grille actuator assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Co

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DESCRIPTION The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the HV battery is discharged excessively or the hybrid battery system is malfunctioning, this DTC will be stored. HINT: If the HV battery voltage has dropped due to a malfunction in

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