Lexus ES: Precaution
PRECAUTION
PRECAUTION FOR ACTIVE NOISE CONTROL SYSTEM
(a) If the active noise control microphone garnish hole is blocked, clean away the blockage and perform diagnosis.
(b) If heavy objects are loaded onto the rear package tray, remove them before performing diagnosis.
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Before checking parts for malfunctions, check that the audio system operates normally.
Use the table below to help determine the cause of problem symptoms. If multi
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 usi
System Diagram
SYSTEM DIAGRAM
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Adjustment
ADJUSTMENT CAUTION / NOTICE / HINT CAUTION: Radiofrequency radiation exposure information:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be kept with minimum distance of 20 cm (7.87 in.) between the radiator (antenna)
Check Bus 2 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 18 (CA4H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 17 (CA4L) of the central gateway ECU (network gateway ECU) and termin
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