Toyota 4Runner: Problem Symptoms Table

Black screen (No image appears on the screen)

Proceed to "Black Screen"

Proceed to "Check Software Error History" in Operation Check

Radio and display receiver assembly

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"

Proceed to "Illumination Circuit"

Radio and display receiver assembly

Power does not turn off (Screen remains on)

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

Screen is distorted

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

Screen flicker or color distortion

Proceed to "Screen Flicker or Color Distortion"

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

Parking brake switch signal does not change in vehicle signal check mode

Proceed to "Parking Brake Switch Circuit"

Radio and display receiver assembly

Reverse signal does not change in vehicle signal check mode

Proceed to "Reverse Signal Circuit"

Radio and display receiver assembly

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"

Proceed to "Illumination Circuit"

Radio and display receiver assembly

Panel switches do not function

Proceed to "Panel Switches do not Function"

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

Touch panel switch does not function

Proceed to "Touch Panel Switch does not Function"

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

System cannot be operated by steering pad switch

Proceed to "Panel Switches do not Function"

Proceed to "Steering Pad Switch Circuit"

Radio and display receiver assembly

Illumination for steering pad switch does not come on with tail switch on

Proceed to "Illumination Circuit"

Radio and display receiver assembly

Pressing power switch does not turn on system

Proceed to "Radio Receiver Power Source Circuit"

Radio and display receiver assembly

No sound can be heard from speakers

Proceed to "No Sound can be Heard from Speakers"

Proceed to "Speaker Circuit"

Radio and display receiver assembly

Abnormal noise occurs

Proceed to "Noise Occurs"

Radio and display receiver assembly

Sound quality is bad in all modes (Volume is too low)

Check that the ASL function is off

-

Proceed to "Poor Sound Quality in All Modes (Low Volume)"

Proceed to "Speaker Circuit"

Radio and display receiver assembly

ASL does not function

Check that the ASL function is on

-

Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"

Radio and display receiver assembly

Voice guidance does not function

Proceed to "Voice Guidance does not Function"

Proceed to "Speaker Circuit"

Radio and display receiver assembly

Radio broadcast cannot be received or poor reception

Proceed to "Radio Broadcast cannot be Received or Poor Reception"

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

Only "HD Radio" stations cannot be heard or selected, or their analog or digital sound cannot be changed

Check the "HD Radio" settings

-

Radio and display receiver assembly

"iPod" tagging function cannot be used

Check if a message indicating that the capacity for tag information is full is displayed

-

Check that the cache radio is not playing (when the cache radio is playing, "iPod" tagging function cannot be used)

-

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

When the HD radio is playing, cover art may not be displayed

When a song unregistered to the Gracenote CDDB is playing or cover art information is not provided by the broadcast station, its cover art cannot be displayed

-

When the HD radio is playing, cover art cannot be displayed

Radio and display receiver assembly

Broadcast station logo cannot be displayed

Check if similar symptoms occur when receiving other broadcasts

-

Check if similar symptoms occur with another vehicle

-

Radio and display receiver assembly

SPS channel cannot be selected

Check that HD radio FM mode is selected

-

After pressing the "Refresh" switch, check that the SPS channel is on the station list

-

Radio and display receiver assembly

When the SPS channel is selected, sound cannot be heard

After pressing the "Refresh" switch, select the SPS channel on the station list

-

Radio and display receiver assembly

Satellite radio broadcast cannot be received or reception is bad

Proceed to "Satellite Radio Broadcast cannot be Received"

Stereo component tuner assembly

Radio and display receiver assembly

Satellite radio cannot receive pay-type broadcasts

Proceed to "Satellite Radio Broadcast cannot be Received"

Stereo component tuner assembly

Radio and display receiver assembly

Satellite radio broadcast cannot be selected or after selecting broadcast, broadcast cannot be added into memory

Proceed 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"

Stereo component tuner assembly

Radio and display receiver assembly

Satellite radio can be displayed but radio broadcast cannot be heard from speakers

Check the volume settings

-

Proceed to "Satellite Radio Broadcast cannot be Received"

Stereo component tuner assembly

Radio and display receiver assembly

Broadcast station logo cannot be displayed

Proceed to "Satellite Radio Broadcast cannot be Received"

Proceed to "Data Signal Circuit between Radio Receiver Assembly and Extension Module"

Stereo component tuner assembly

Radio and display receiver assembly

Satellite radio text information cannot be displayed

Proceed to "Satellite Radio Broadcast cannot be Received"

Stereo component tuner assembly

Radio and display receiver assembly

Satellite radio broadcast station cannot be selected

(scan cannot be performed)

Proceed to "Satellite Radio Broadcast cannot be Received"

Stereo component tuner assembly

Proceed to "Satellite Radio Broadcast cannot be Received"

When the satellite radio is playing, some cover art may not be displayed

When a song unregistered to the Gracenote CDDB is playing, its cover art cannot be displayed

-

When the satellite radio is playing, cover art cannot be displayed

Radio and display receiver assembly

CD cannot be inserted/played or CD is ejected right after insertion

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

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

CD cannot be ejected

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

Proceed to "CD cannot be Ejected"

CD sound skips

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

Proceed to "CD Sound Skips"

Sound quality is bad only when CD is played (Volume is too low

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)"

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 and display receiver assembly

"AUX/VTR" is not displayed on system check mode screen

Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Voice menu screen is not displayed (Voice recognition function does not turn on)

Check if the voice recognition prompts function is not "Off"

-

Proceed to "Panel Switches do not Function"

Proceed to "Steering Pad Switch Circuit"

Radio and display receiver assembly

When voice recognition switch is pressed, a short beep is emitted but voice cannot be recognized properly

Proceed to "Voice is not Recognized"

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Radio and display receiver assembly

"Bluetooth" is inoperative (In-vehicle device cannot be recognized by the cellular phone)

Proceed to "Cellular Phone Inspection"

Radio and display receiver assembly

"Bluetooth" compatible cellular phone cannot be registered

Proceed to "Cellular Phone Registration Failure"

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

-

Radio and display receiver assembly

"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

"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"

Radio and display receiver assembly

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"

Radio and display receiver assembly

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 data 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"

Radio and display receiver assembly

Phonebook data is cleared

Radio and display receiver assembly

Phonebook data cannot be edited

Check that the phonebook data automatic transfer setting of the in-vehicle device is off

-

Radio and display receiver assembly

All the transferred phonebook data is sorted to "Other"

Check that no applications on the cellular phone are running

-

Check that phonebook data in the cellular phone is not stored to the SIM card

-

Proceed to "Cellular Phone Inspection"

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"

Radio and display receiver assembly

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

Proceed to "Cellular Phone Inspection"

Radio and display receiver assembly

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

Proceed to "Cellular Phone Inspection"

Radio and display receiver assembly

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

Proceed to "Cellular Phone Inspection"

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Radio and display receiver assembly

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

Proceed to "Cellular Phone Inspection"

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Radio and display receiver assembly

"Bluetooth" can be connected while driving

Proceed to "Parking Brake Switch Circuit"

Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"

Radio and display receiver assembly

No notification when a new SMS/MMS/email has been received*1

Check the SMS/MMS/e-mail notification settings on the cellular phone and the radio and display receiver assembly

-

Proceed to "Cellular Phone Inspection"

Radio and display receiver assembly

Received SMS/MMS/e-mail cannot be read*1

Check the SMS/MMS/e-mail transfer settings on the cellular phone and the radio and display receiver assembly

-

Proceed to "Cellular Phone Inspection"

Radio and display receiver assembly

SMS/MMS/e-mail cannot be replied to*1

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"

Radio and display receiver assembly

Portable player cannot be registered

Proceed to "Portable Player cannot be Registered"

Radio and display 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 and display 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 and display 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 and display 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 and display receiver assembly

Portable player does not play

Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"

Radio and display receiver assembly

Track information such as track number, track name, elapsed play time and playlist 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 and display receiver assembly

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"

Radio and display receiver assembly

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"

Radio and display 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 and display 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 and display receiver assembly

Noise occurs or sound skips when portable player plays

Proceed to "Noise Occurs or Sound Skips when Portable Player Plays"

Radio and display receiver assembly

Registered device cannot be deleted

Proceed to "Registered Device cannot be Deleted"

Radio and display receiver assembly

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"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

USB device or "iPod" is not recognized

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display 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 and display receiver assembly

USB device or "iPod" is recognized but cannot play nor play in a sorted order

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Album cover art cannot be displayed

Check that display cover art on the USB device or "iPod" settings screen is set to on

-

Check if similar symptoms occur with another vehicle

-

Radio and display receiver assembly

User set album cover art cannot be displayed

Check that a JPEG file is used for the album cover art registered to the music data in the USB device or "iPod"

-

Radio and display receiver assembly

"iPod" battery cannot be charged

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Screen is distorted or not displayed only when using the video function of an "iPod"

Check if "iPod" is set to output images

-

Proceed to "USB Audio System Outline" in System Description and check if the "iPod" is compatible with the radio and display receiver assembly

Check if the appropriate image signal setting (NTSC/ PAL) is selected

-

Check if video sound input is set to "A/V"

-

Connect using a known good cable and check if the image is output

-

Proceed to "Data Signal Circuit between Radio Receiver and Stereo Jack Adapter"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Screen cannot be changed to UIC setting screen

Radio and display receiver assembly

Thumbnails for opening image setting or screen off image setting do not update when USB device is connected

Check that the USB device was not disconnected while transferring an image

-

Check that the screen was not changed to another function menu while transferring an image

-

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Transfer button cannot be pressed

Check that a USB device is connected

-

Check that the USB device is not in use (USB audio system is playing etc.)

-

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Image data in USB device cannot be displayed

Check that the designated folder name is used

-

Check that the file extension of the data is JPG or JPEG

-

Check that the file name is 32 characters or less and available language is used

-

Check that the image data size is 10 MB or less

-

Check that the file system of the USB device is FAT16 or FAT32

-

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Set opening image or screen off image is not displayed

Check if it is the first start-up after disconnecting and reconnecting the +B terminal (Reading from the SD card may be slow when the system is first starting-up)

-

Set the opening image or screen off image again

-

Radio and display receiver assembly

Stored image cannot be deleted

Radio and display receiver assembly

Message indicating that USB device cannot be accessed is displayed

Check that the USB device has not been disconnected while the audio system is recognizing it

-

Proceed to "USB Audio System Recognition/Play Error"

No. 1 stereo jack adapter assembly

Radio and display receiver assembly

Thumbnail images for opening image or screen off image are not displayed on setting screen

Check if it is the first start-up after disconnecting and reconnecting the +B terminal (Reading from the HDD may be slow when the system is first starting-up)

-

Set the opening image or screen off image again

-

Radio and display receiver assembly

Image cannot be set for opening image or screen off image on setting screen

Set the opening image or screen off image again

-

Radio and display receiver assembly