Lexus ES: Problem Symptoms Table
Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System(for Hv Model) / 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 | |
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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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TERMINALS OF ECU STEREO COMPONENT EQUALIZER ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G15-1 (CANH) P CAN communication signal
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Radio Receiver Power Source Circuit
DESCRIPTION This is the power source circuit to operate the radio receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBL
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PROCEDURE 1. CHECK COMMUNICATION BASED VOICE RECOGNITION FUNCTION (a) While paying attention to the condition of the spoken voice command, say "Find a gas station in New York" and check that voice recognition is operating normally. HINT:
When the voice command is recognized, the content
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