AUDIO AND VISUAL SYSTEM (for Radio and Display Type) PROBLEM SYMPTOMS TABLE

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.

Display Function
Symptom Suspected Area See page
Pressing power switch does not turn on system Proceed to "Pressing Power Switch does not Turn on System"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Black screen (No image appears on the screen) Proceed to "Black Screen"

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Radio and display receiver assembly

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Display does not dim (does not change to night screen) with tail switch on Proceed to "Display does not Dim when Light Control Switch is Turned ON"

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Proceed to "Illumination Circuit"

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Radio and display receiver assembly

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Power does not turn off (Screen remains on) Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Screen is distorted Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Screen flicker or color distortion Proceed to "Screen Flicker or Color Distortion"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Parking brake switch signal does not change in vehicle signal check mode Proceed to "Parking Brake Switch Circuit"

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Radio and display receiver assembly

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Reverse signal does not change in vehicle signal check mode Proceed to "Reverse Signal Circuit"

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Radio and display receiver assembly

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Panel Switch and Touch Panel Switch Function
Symptom Suspected Area See page
Illumination for panel switches does not come on with tail switch on Proceed to "Illumination for Panel Switch does not Come on with Tail Switch ON"

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Proceed to "Illumination Circuit"

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Radio and display receiver assembly

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Panel switches do not function Proceed to "Panel Switches do not Function"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Touch panel switch does not function Proceed to "Touch Panel Switch does not Function"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Steering Pad Switch Function
Symptom Suspected Area See page
System cannot be operated by steering pad switch Proceed to "Panel Switches do not Function"

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Proceed to "Steering Pad Switch Circuit"

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Radio and display receiver assembly

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Illumination for steering pad switch does not come on with tail switch on Proceed to "Illumination Circuit"

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Radio and display receiver assembly

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General Audio Function
Symptom Suspected Area See page
No sound can be heard from speakers Proceed to "No Sound can be Heard from Speakers"

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Proceed to "Speaker Circuit"

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Radio and display receiver assembly

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Abnormal noise occurs Proceed to "Noise Occurs"

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Radio and display receiver assembly

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Sound quality is bad in all modes (Volume is too low) Check that the ASL function is on -
Proceed to "Poor Sound Quality in All Modes (Low Volume)"

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Proceed to "Speaker Circuit"

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Radio and display receiver assembly

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ASL does not function Check that the ASL function is on -
Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"

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Proceed to "Speed Signal Circuit"

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Radio and display receiver assembly

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Voice guidance does not function Proceed to "Speaker Circuit"

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Radio and display receiver assembly

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FM or AM Radio Function
Symptom Suspected Area See page
Radio broadcast cannot be received or poor reception Proceed to "Radio Broadcast cannot be Received or Poor Reception"

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Radio broadcast can be received but radio station cannot be displayed (Some radio stations do not provide their name information) Radio and display receiver assembly

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Radio broadcast can be displayed but radio broadcast cannot be heard from speakers Check the volume settings -
Radio and display receiver assembly

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Radio broadcast can be received but station list cannot be displayed Wait for 120 seconds in radio mode, and select the "Refresh" switch on the station list screen -
Radio and display receiver assembly

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Radio broadcast can be received but station list cannot be displayed Select the "Refresh" switch on the station list screen -
Wait for 10 minutes with the ignition switch turned to ACC, and select the "Refresh" switch on the station list screen again -
Radio and display receiver assembly

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After the voice recognition function or handsfree function is turned off, the cache radio does not operate Check that the cache radio setting is on -
Radio and display receiver assembly

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When the cache radio is playing, sound is interrupted, sound cannot be heard or sound quality is poor Check if similar symptoms occur when receiving conventional FM/AM radio broadcasts -
Check if similar symptoms occur when receiving other broadcasts -
Move the vehicle to a place where the reception sensitivity is good and check again -
Radio and display receiver assembly

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When the cache radio is playing, sound can be heard, but no information is displayed (some radio stations do not provide their name information) Check if similar symptoms occur when receiving other broadcasts -
Move the vehicle to a place where the reception sensitivity is good and check again -
Radio and display receiver assembly

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DAB (Digital Audio Broadcast) Function (w/ DAB Function)
Symptom Suspected Area See page
Sound cannot be heard/sound quality is poor/ loud noise occurs only when DAB function is used (when receiving DAB-TA, sound temporarily may not be heard) Operate the volume switch and turn up the volume level -
Proceed to "Check DAB Reception" in Operation Check

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Antenna cord sub-assembly

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No. 2 antenna cord sub-assembly

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No. 1 amplifier antenna assembly

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Roof antenna pole sub-assembly

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Radio and display receiver assembly

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When time shift mode is not selected, DAB-TA cannot be used Check if DAB-TA function is set to on -
Check that "TP" icon is displayed on the screen -
Check if similar symptoms occur with another vehicle -
Radio and display receiver assembly

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DAB-DAB Link, DAB-FM Link or Time- Shift cannot be used Check if each function is set to on -
Check if similar symptoms occur when receiving other broadcasts -
Radio and display receiver assembly

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CD Player Function
Symptom Suspected Area See page
Disc cannot be played or player does not function with disc Proceed to "Disc Player Outline" in System Description and check if the disc is compatible with the disc player

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Proceed to "Check Optical Disc Error History" in Operation Check

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Radio and display receiver assembly

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CD cannot be inserted/played or CD is ejected right after insertion Proceed to "Check Optical Disc Error History" in Operation Check

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Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion"

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CD cannot be ejected Proceed to "Check Optical Disc Error History" in Operation Check

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Proceed to "CD cannot be Ejected"

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CD sound skips Proceed to "Check Optical Disc Error History" in Operation Check

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Proceed to "CD Sound Skips"

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Sound quality is bad only when CD is played (Volume is too low) Change the sound settings on the adjustment screen -
Proceed to "Check Optical Disc Error History" in Operation Check
Proceed to "Sound Quality is Bad Only when CD is Played (Volume is Too Low)

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AUX Function
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"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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"AUX" is not displayed on system check mode screen Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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"Bluetooth" Handsfree Function
Symptom Suspected Area See page
"Bluetooth" is inoperative (In-vehicle device cannot be recognized by the cellular phone) Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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"Bluetooth" compatible cellular phone cannot be registered Proceed to "Cellular Phone Registration Failure"

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"Bluetooth" compatible cellular phone cannot be connected Check that no other cellular phone is connected as a hands-free device -
Bring the cellular phone near the in-vehicle device and reconnect it -
Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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"Bluetooth" compatible cellular phone cannot be connected automatically (can be connected manually) Check that "Bluetooth" automatic connection setting of the in-vehicle device is on -
Radio and display receiver assembly

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"Bluetooth" compatible cellular phone connection is disconnected Bring the cellular phone near the in-vehicle device and check if it is reconnected -
Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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Message that prompts to check the cellular phone is displayed Bring the cellular phone near the in-vehicle device and check if it is reconnected -
Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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When the ignition switch is turned to ACC, instructions for checking the connection condition between the in-vehicle device and cellular phone are displayed Turn the cellular phone connection conformation display on the in-vehicle device off -
Phonebook data cannot be transferred Check that the phonebook automatic transfer setting of the in-vehicle device is on -
Enter "1234" into the "Bluetooth" phone (when transferring phonebook data, OBEX authentication may be required) -
Check that no applications on the cellular phone are running -
If using "Bluetooth" audio function, cancel the "Bluetooth" audio player connection and check the operation -
Transfer phonebook data manually -
Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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Phonebook data is cleared Radio and display receiver assembly

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Phonebook data cannot be edited Check that the phonebook data automatic transfer setting is off -
Radio and display receiver assembly

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All the transferred phonebook data is sorted to "Other" Check that no applications on the cellular phone are operating -
Check that phonebook data in the cellular phone is not stored to the SIM card -
Proceed to "Cellular Phone Inspection"

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Explain to the customer that all the transferred phonebook data may be stored to "Other" depending on cellular phone -
Cellular phone cannot make outgoing/ incoming calls Move the vehicle into a cellular phone service area, check that the "Bluetooth" device is connected to the vehicle and operate device again -
Check that the cellular phone can make outgoing/incoming calls properly when not connected via "Bluetooth" -
Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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Other caller's voice is interrupted by noise or sound quality is poor Check the receiving voice volume (if it is too high, voice may sound distorted) -
Make a call with the cellular phone disconnected from "Bluetooth" and check that other caller's voice can be heard clearly -
Proceed to "Check Hands-free Voice Quality Setting" in Operation Check

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Proceed to "Cellular Phone Inspection"

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Radio and display receiver assembly

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Other caller's voice cannot be heard Check that reception voice volume is not set to minimum -
Make a call with the cellular phone disconnected from "Bluetooth" and check that other caller's voice can be heard clearly -
Proceed to "Check Hands-free Voice Quality Setting" in Operation Check

Click here

Proceed to "Cellular Phone Inspection"

Click here

Radio and display receiver assembly

Click here

Caller's voice (your voice) is interrupted by noise or sound quality is poor Check the transmitting voice volume (if it is too high, voice may sound distorted) -
Check that nothing can cause noise around the microphone (an outlet of the air conditioning system facing the microphone, wind from an open window, additional devices, etc. may affect noise occurrence) -
Proceed to "Check Hands-free Voice Quality Setting" in Operation Check

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Proceed to "Cellular Phone Inspection"

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Proceed to "Microphone Circuit between Microphone and Radio Receiver"

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Other caller cannot hear your voice When talking on the cellular phone, check that the mute button is not pressed -
Check that nothing can cause noise around the microphone (an outlet of the air conditioning system facing the microphone, wind from an open window, additional devices, etc. may affect noise occurrence) -
Proceed to "Check Hands-free Voice Quality Setting" in Operation Check

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Proceed to "Cellular Phone Inspection"

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Proceed to "Microphone Circuit between Microphone and Radio Receiver"

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No notification when a new SMS/MMS/e-mail has been received Check the SMS/MMS/e-mail notification settings on the cellular phone and the radio and display receiver assembly -
Proceed to "Cellular Phone Inspection"

Click here

Radio and display receiver assembly

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Received SMS/MMS/e-mail cannot be read Check the SMS/MMS/e-mail transfer settings on the cellular phone and the Radio and display receiver assembly -
Proceed to "Cellular Phone Inspection"

Click here

Radio and display receiver assembly

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SMS/MMS/e-mail cannot be replied to Move the vehicle into a cellular phone service area, and check the operation of the Radio and display receiver assembly and cellular phone -
Check that the cellular phone can send an SMS/MMS/e-mail -
Proceed to "Cellular Phone Inspection"

Click here

Radio and display receiver assembly

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"Bluetooth" Audio Function
Symptom Suspected Area See page
Portable player cannot be registered Proceed to "Portable Player cannot be Registered"

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Radio and display receiver assembly

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Portable player cannot be connected manually/automatically Proceed to "Portable Player cannot be Registered"

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Proceed to "Portable Player cannot be Connected Manually/Automatically"

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Radio and display receiver assembly

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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"

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Proceed to "Portable Player cannot be Connected Manually/Automatically"

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Radio and display receiver assembly

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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"

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Radio and display receiver assembly

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Portable player does not play even after "Bluetooth" audio mode is selected Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"

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Radio and display receiver assembly

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Portable player does not play Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"

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Radio and display receiver assembly

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Track information such as track number, track name and elapsed play time and playlist are not displayed Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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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"

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Radio and display receiver assembly

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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"

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Radio and display receiver assembly

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"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"

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Radio and display receiver assembly

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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"

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Radio and display receiver assembly

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Noise occurs or sound skips when portable player plays Proceed to "Noise Occurs or Sound Skips when Portable Player Plays"

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Radio and display receiver assembly

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Registered device cannot be deleted Proceed to "Registered Device cannot be Deleted"

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Radio and display receiver assembly

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USB Audio System Function
Symptom Suspected Area See page
USB audio system sound cannot be heard or sound quality is bad (USB connector is used) Proceed to "Data Signal Circuit between Radio Receiver and Stereo Jack Adapter"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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USB device or "iPod" is not recognized Proceed to "USB Audio System Recognition/Play Error"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Track information such as track, artist and album names are not displayed Proceed to "USB Audio System Recognition/Play Error"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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USB device or "iPod" is recognized but cannot play, or can play but not in a sorted order Proceed to "USB Audio System Recognition/Play Error"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Album cover art cannot be displayed Check that display cover art on the "iPod" Settings screen is set to on -
Check that a JPEG file is used for the cover art -
"iPod" battery cannot be charged Proceed to "USB Audio System Recognition/Play Error"

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Replace No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Fuel Consumption Function
Symptom Suspected Area See page
"Fuel Consumption" icon is dimmed Check if other icons or items displayed on screen have any problems -
Radio and display receiver assembly

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Graph is not displayed on "Trip Information" screen Recheck with the engine running -
Radio and display receiver assembly

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Cruise range is not displayed on "Trip Information" screen Turn ignition switch to ON and recheck -
Radio and display receiver assembly

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Graph is not updated on "Past record" screen even though "Clear" is selected Turn ignition switch to ON and recheck -
Radio and display receiver assembly

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Graph is not displayed on "Past record" screen Turn ignition switch to ON and recheck -
Radio and display receiver assembly

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"MirrorLink" Function (w/ "MirrorLink" Function)
Symptom Suspected Area See page
Although USB device or "iPod" is recognized, "MirrorLink" function cannot be started (smartphone battery can be charged) Proceed to "MirrorLink Function cannot be Started"

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Image is not displayed Proceed to "MirrorLink Image is not Displayed"

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Sound cannot be heard Proceed to "MirrorLink Sound cannot be Heard"

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"MirrorLink" is inoperative only when smartphone is connected to head unit Proceed to "MirrorLink is Inoperative"

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