Tech Tips
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.
Symptom | Suspected Area | See page |
---|---|---|
Pressing power switch does not turn on system. | Proceed to "Radio Receiver Power Source Circuit" | |
Radio receiver assembly | ||
Panel switch does not function. | Radio receiver assembly | |
Radio receiver does not illuminate at night. | Proceed to "Illumination Circuit" | |
Radio receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
No sound can be heard from speakers. (Audio is mute.) | Proceed to "No Sound can be Heard from Speakers" | |
Proceed to "Speaker Circuit" | ||
Radio receiver assembly | ||
Sound quality is bad in all modes. (Volume is too low.) | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | |
Proceed to "Speaker Circuit" | ||
Radio receiver assembly | ||
ASL does not function. | Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter" | |
Abnormal noise occurs. | Proceed to "Noise Occurs" | |
Radio receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" |
Symptom | Suspected Area | See page |
---|---|---|
CD cannot be inserted/played or CD is ejected right after insertion. | Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion" | |
CD cannot be ejected. | Proceed to "CD cannot be Ejected" | |
Sound quality is bad only when CD is played. (Volume is too low.) | Proceed to "Sound Quality is Bad Only when CD is Played (Volume is Too Low)" | |
CD sound skips. | Proceed to "CD Sound Skips" |
Symptom | Suspected Area | See page |
---|---|---|
External device sound cannot be heard or sound quality is bad. (Stereo jack is used.) | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Audio system cannot be operated with steering pad switch. | Proceed to "Steering Pad Switch Circuit" | |
Radio receiver assembly | ||
Illumination for steering pad switch does not come on with tail switch on. | Proceed to "Illumination Circuit" | |
Radio receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
"Bluetooth" is inoperative. | Proceed to "Microphone Circuit between Microphone and Radio Receiver" | |
Radio receiver assembly | ||
Cellular phone registration failure, phonebook transfer failure. | Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | |
Cellular phone cannot make outgoing/incoming calls. | Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls" | |
Radio receiver assembly | ||
Other caller's voice cannot be heard, is too quiet, or distorted. | Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted" | |
Radio receiver assembly | ||
Other caller cannot hear your voice, or your voice is too quiet or distorted. | Proceed to "The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted" | |
Proceed to "Microphone Circuit between Microphone and Radio Receiver" | ||
Radio receiver assembly | ||
"Bluetooth" can be connected while driving. | Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter" |
Symptom | Suspected Area | See page |
---|---|---|
Portable player cannot be registered. | Proceed to "Portable Player cannot be Registered" | |
Radio receiver assembly | ||
Portable player cannot be connected manually/automatically. | Proceed to "Portable Player cannot be Registered" | |
Proceed to "Portable Player cannot be Connected Manually/Automatically" | ||
Radio receiver assembly | ||
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" | |
Proceed to "Portable Player cannot be Connected Manually/Automatically" | ||
Radio receiver assembly | ||
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" | |
Radio receiver assembly | ||
Portable player does not play even after "Bluetooth" audio mode is selected. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
Radio receiver assembly | ||
Portable player does not play. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
Radio receiver assembly | ||
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" | |
Radio receiver assembly | ||
"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" | |
Radio receiver assembly | ||
Portable player cannot pause, select file, fast forward, fast rewind, play at random or scan. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
Radio receiver assembly | ||
Noise occurs or sound skips when portable players plays. | Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" | |
Radio receiver assembly | ||
Registered device cannot be deleted. | Proceed to "Registered Device cannot be Deleted" | |
Radio receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
USB audio system sound cannot be heard or sound quality is bad. (USB connector is used.) | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly | ||
USB Device or "iPod" is not recognized. | Proceed to "USB Audio System Recognition/Play Error" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly | ||
Track information such as track, artist and album names are not displayed. | Proceed to "USB Audio System Recognition/Play Error" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly | ||
USB device or "iPod" is recognized but cannot play or play in a sorted order. | Proceed to "USB Audio System Recognition/Play Error" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly | ||
"iPod" battery cannot be charged. | Proceed to "USB Audio System Recognition/Play Error" | |
No. 1 stereo jack adapter assembly | ||
Radio receiver assembly |