Lexus ES: Sound Quality is Bad Only when CD is Played (Volume is Too Low)
Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for Hv Model) / Sound Quality is Bad Only when CD is Played (Volume is Too Low)
CAUTION / NOTICE / HINT
NOTICE:
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Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
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When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio receiver assembly may not operate normally.
PROCEDURE
| 1. | REPLACE CD AND RECHECK |
(a) Replace the CD with a new or known good one and check that the malfunction disappears.
OK:
Malfunction disappears.
| OK |  | END |
|
| 2. | CHECK NOISE CONDITION |
(a) Check that noise is output from the speakers when a disc is inserted and is being read.
OK:
Noise is output.
| OK | | REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
| NG | | REPLACE RADIO RECEIVER ASSEMBLY |
READ NEXT:
Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION The radio receiver assembly sends a sound signal to the stereo component amplifier assembly via this circuit. The sound signal that has been sent is amplified by the stereo component ampli
Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND
Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is
SEE MORE:
Navigation Processor Malfunction (B15AD)
DESCRIPTION This DTC is stored when a malfunction occurs in the navigation ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B15AD Navigation Processor Malfunction When either condition below is met:
A short to ground, short to +B or open occurs in the gyro signal
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin trouble
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