Lexus ES manuals

Lexus ES: System Description



(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.


 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


 Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range (P0A9B2A,...,P306A62)

DESCRIPTION Refer to the description for DTC P0A9B11. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0A9B2A Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range The performance of battery temperature sensor 0 is abnormal


INITIALIZATION INITIALIZE PANORAMIC MOON ROOF SYSTEM (FOR SLIDING ROOF) NOTICE: When the sliding roof glass sub-assembly, sliding roof housing panel or slide roof rail sub-assembly is adjusted or removed/installed, or the sliding roof ECU (sliding roof drive gear assembly) is replaced, the slidin

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