Lexus ES manuals

Lexus ES: 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 multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

HINT:

Removing dealer installed options and optional components before performing diagnosis makes it easier to determine the location of a malfunction.

Active Noise Control System

Symptom

Suspected Area

Link

Muffled engine sounds in cabin

Proceed to "Power Source Circuit"

Proceed to "Input / Output Signal Circuit"

Front No. 1 speaker assembly LH

Front No. 1 speaker assembly RH

Speaker assembly with bracket

Harness or connector

-

Stereo component equalizer assembly

Stereo component amplifier assembly

Abnormal noise from speakers

Front No. 1 speaker assembly LH

Front No. 1 speaker assembly RH

Speaker assembly with bracket

Harness or connector

-

Stereo component equalizer assembly

Stereo component amplifier assembly

READ NEXT:

 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

 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

SEE MORE:

 Charging Failure

PROCEDURE 1. CHECK GENERATOR PULLEY WITH CLUTCH (ON-VEHICLE INSPECTION) (a) Start the engine and visually check that the generator rotor assembly (fan) in the generator assembly is operating. OK: The generator rotor assembly (fan) is operating. NG REPLACE GENERATOR PULLEY WITH CLUTC

 High Voltage Power Resource Internal Electronic Failure (P1C8549)

DESCRIPTION The hybrid vehicle control ECU monitors the system internal operation, it will store a DTC and perform fail-safe control if it detects the following malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1C8549 High Voltage Power

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