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Home >> Lexus >> 2012 >> IS 250C Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio / Video System (W/ Navigation) (Diagnostics - Introduction) >> AUDIO AND VISUAL SYSTEM (w/ Navigation System) >> Problem Symptoms Table >> Problem Symptoms Table
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Problem Symptoms Table

NOTE:

After replacing the radio receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, the XM radio ID registration is necessary. (w/ SDARS System)

HINT: 

AUDIO FUNCTION

Symptom Suspected Area See
Pressing power switch does not turn on system. Proceed to "Pressing Power Switch does not Turn on System" Refer to Pressing Power Switch does not Turn on System
Radio receiver power source circuit Refer to Radio Receiver Power Source Circuit
Radio receiver assembly Refer to REMOVAL
Panel switch does not function. Radio receiver assembly Refer to REMOVAL
No sound can be heard from speakers. (Audio is mute.) Proceed to "No Sound can be Heard from Speakers" Refer to No Sound can be Heard from Speakers
Stereo component amplifier power source circuit Refer to Stereo Component Amplifier Power Source Circuit
Speaker circuit Refer to Speaker Circuit
Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver"*1 Refer to Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver
DCM (Telematics transceiver)*1 Refer to REMOVAL
Stereo component amplifier assembly Refer to REMOVAL
Radio receiver assembly Refer to REMOVAL
Sound quality is bad in all modes. (Volume is too low.) Proceed to "Poor Sound Quality in All Modes (Low Volume)" Refer to Poor Sound Quality in All Modes (Low Volume)
Speaker circuit Refer to Speaker Circuit
Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver"*1 Refer to Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver
DCM (Telematics transceiver)*1 Refer to REMOVAL
Stereo component amplifier assembly Refer to REMOVAL
Radio receiver assembly Refer to REMOVAL
ASL does not function. Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter" Refer to Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter
External device sound cannot be heard or sound quality is bad. (Stereo jack is used.) Radio receiver power source circuit Refer to Radio Receiver Power Source Circuit
Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" Refer to Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
No. 1 stereo jack adapter assembly Refer to REMOVAL
Radio receiver assembly Refer to REMOVAL
Abnormal noise occurs. Proceed to "Noise Occurs" Refer to Noise Occurs
Stereo component amplifier assembly Refer to REMOVAL
Radio receiver assembly Refer to REMOVAL
Radio broadcast cannot be received or poor reception. Proceed to "Radio Broadcast cannot be Received or Poor Reception" Refer to Radio Broadcast cannot be Received or Poor Reception
Disc cannot be inserted/played or disc is ejected right after insertion. Radio receiver power source circuit Refer to Radio Receiver Power Source Circuit
Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" Refer to Disc cannot be Inserted or is Ejected Right After Insertion
Disc cannot be ejected. Radio receiver power source circuit Refer to Radio Receiver Power Source Circuit
Proceed to "Disc cannot be Ejected" Refer to Disc cannot be Ejected
Sound quality is bad only when disc is played. (Volume is too low.) Proceed to "Sound Quality is Bad Only when Disc is Played (Volume is Too Low)" Refer to Sound Quality is Bad Only when Disc is Played (Volume is Too Low)
CD/DVD sound skips. Proceed to "CD/DVD Sound Skips" Refer to CD/DVD Sound Skips
Radio receiver does not illuminate at night. Illumination circuit Refer to Illumination Circuit
Radio receiver assembly Refer to REMOVAL
Sound can be heard continuously from audio system even after changing to emergency call mode.*1 Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver"*1 Refer to Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver
DCM (Telematics transceiver)*1 Refer to REMOVAL
"BLUETOOTH" AUDIO FUNCTION*2

Symptom Suspected Area See
Portable player cannot be registered. Proceed to "Portable Player cannot be Registered" Refer to Portable Player cannot be Registered
Radio receiver assembly Refer to REMOVAL
Portable player cannot be connected manually/automatically. Proceed to "Portable Player cannot be Registered" Refer to Portable Player cannot be Registered
Proceed to "Portable Player cannot be Connected Manually / Automatically" Refer to Portable Player cannot be Connected Manually/Automatically
Radio receiver assembly Refer to REMOVAL
Cellular phone with portable audio function cannot be recognized as "Bluetooth" audio device even when connected using "Bluetooth". Proceed to "Portable Player cannot be Registered" Refer to Portable Player cannot be Registered
Proceed to "Portable Player cannot be Connected Manually / Automatically" Refer to Portable Player cannot be Connected Manually/Automatically
Radio receiver assembly Refer to REMOVAL
Sound of portable player cannot be heard from speakers, or sound is low. Proceed to "Sound of Portable Player cannot be Heard from Speakers or Sound is Low" Refer to Sound of Portable Player cannot be Heard from Speakers or Sound is Low
Radio receiver assembly Refer to REMOVAL
Portable player does not play even after "Bluetooth" audio mode is selected. Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" Refer to Does not Play even after Bluetooth Audio Mode is Selected
Radio receiver assembly Refer to REMOVAL
Portable player does not play. Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" Refer to Does not Play even after Bluetooth Audio Mode is Selected
Radio receiver assembly Refer to REMOVAL
Track information such as track number, track name and elapsed play time is not displayed. Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" Refer to Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
Radio receiver assembly Refer to REMOVAL
Operation switches for portable player such as play, pause, repeat, random and scan are not displayed. Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" Refer to Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
Radio receiver assembly Refer to REMOVAL
Battery condition of portable player is not displayed. Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" Refer to Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
Radio receiver assembly Refer to REMOVAL
"Bluetooth" signal condition is not displayed. Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" Refer to Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
Radio receiver assembly Refer to REMOVAL
Portable player cannot pause, select file, fast forward, fast rewind, random play or scan. Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" Refer to Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
Radio receiver assembly Refer to REMOVAL
Noise occurs or sound skips when portable player plays. Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" Refer to Noise Occurs or Sound Skips when Portable Player Plays
Radio receiver assembly Refer to REMOVAL
Registered device cannot be deleted. Proceed to "Registered Device cannot be Deleted" Refer to Registered Device cannot be Deleted
Radio receiver assembly Refer to REMOVAL
SDARS SYSTEM FUNCTION*3

Symptom Suspected Area See
Satellite radio broadcast cannot be received or reception is bad. Proceed to "Satellite Radio Broadcast cannot be Received" Refer to Satellite Radio Broadcast cannot be Received
Radio receiver assembly Refer to REMOVAL
Pay-type satellite radio broadcast cannot be received. Proceed to "Satellite Radio Broadcast cannot be Received" Refer to Satellite Radio Broadcast cannot be Received
Radio receiver assembly Refer to REMOVAL
Satellite radio broadcast cannot be selected or after selecting broadcast, broadcast cannot be added into memory. Proceed to "Satellite Radio Broadcast cannot be Received" Refer to Satellite Radio Broadcast cannot be Received
Proceed to "Satellite Radio Broadcast cannot be Selected or After Selecting Broadcast, Broadcast cannot be Added into Memory" Refer to Satellite Radio Broadcast cannot be Selected or After Selecting Broadcast, Broadcast cannot be Added into Memory
Radio receiver assembly Refer to REMOVAL
USB AUDIO SYSTEM FUNCTION

Symptom Suspected Area See
USB audio sound cannot be heard or sound quality is bad. (Stereo jack is used.) Multi-media Interface ECU power source circuit Refer to Multi-media Interface ECU Power Source Circuit
Proceed to "Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU" Refer to Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU
Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" Refer to Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter
No. 1 stereo jack adapter assembly Refer to REMOVAL
Multi-media interface ECU Refer to REMOVAL
Display and navigation module display Refer to REMOVAL
USB device or "iPod" is not recognized. Proceed to "USB Audio cannot Recognition/Play Error" Refer to USB Audio System Recognition/Play Error
Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" Refer to Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter
No. 1 stereo jack adapter assembly Refer to REMOVAL
Multi-media interface ECU Refer to REMOVAL
Track information such as track, artist and album names are not displayed. Proceed to "USB Audio cannot Recognition/Play Error" Refer to USB Audio System Recognition/Play Error
Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" Refer to Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter
No. 1 stereo jack adapter assembly Refer to REMOVAL
Multi-media interface ECU Refer to REMOVAL
USB device or "iPod" is recognized but cannot play nor play in a sorted order. Proceed to "USB Audio cannot Recognition/Play Error" Refer to USB Audio System Recognition/Play Error
Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" Refer to Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter
No. 1 stereo jack adapter assembly Refer to REMOVAL
Multi-media interface ECU Refer to REMOVAL
USB device or "iPod" cannot charge. Multi-media Interface ECU power source circuit Refer to Multi-media Interface ECU Power Source Circuit
Proceed to "USB Device or "iPod" cannot Charge" Refer to USB Device or "iPod" cannot Charge
Multi-media interface ECU Refer to REMOVAL