NAVIGATION SYSTEM 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 "Radio Receiver Power Source Circuit"

Click here

Radio and display receiver assembly

Click here

Black screen (No image appears on navigation/audio screen) Proceed to "Black Screen"

Click here

Proceed to "Display Signal Circuit between Radio Receiver and Extension Module"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Proceed to "Illumination Circuit"

Click here

Radio and display receiver assembly

Click here

Navigation ECU

Click here

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

Click here

Radio and display receiver assembly

Click here

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

Click here

Proceed to "Display Signal Circuit between Radio Receiver and Extension Module"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Proceed to "Radio Receiver Power Source Circuit"

Click here

Proceed to "Display Signal Circuit between Radio Receiver and Extension Module"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Proceed to "Illumination Circuit"

Click here

Radio and display receiver assembly

Click here

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

Click here

Proceed to "Radio Receiver Power Source Circuit"

Click here

Radio and display receiver assembly

Click here

Navigation ECU

Click here

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

Click here

Proceed to "Radio Receiver Power Source Circuit"

Click here

Radio and display receiver assembly

Click here

Navigation ECU

Click here

Navigation function switches can be operated while vehicle is driving Proceed to "Parking Brake Switch Circuit"

Click here

Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Extension Module"

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Proceed to "Steering Pad Switch Circuit"

Click here

Radio and display receiver assembly

Click here

Picture Slide Show Function
Symptom Suspected Area See page
Image data in USB device cannot be displayed 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"

Click here

Proceed to "Display Signal Circuit between Radio Receiver and Extension Module"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Message indicating that USB device cannot be accessed is displayed Check that the USB device has not been disconnected while the navigation ECU is recognizing it -
Proceed to "USB Audio System Recognition / Play Error"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

Navigation Function
Symptom Suspected Area See page
Vehicle position mark deviates Proceed to "Vehicle Position Mark Deviates Greatly"

Click here

Navigation antenna assembly

Click here

Navigation ECU

Click here

Vehicle position mark deviates from correct position and does not return to correct position Proceed to "Vehicle Position Mark Deviates Greatly"

Click here

Navigation antenna assembly

Click here

Navigation ECU

Click here

Vehicle position mark moves slow or fast Proceed to "Vehicle Position Mark Deviates Greatly"

Click here

Drive the vehicle for sensor learning (At a place where GPS signals can be received, drive the vehicle clockwise and counterclockwise in at least a 200 meter square 2 times or more) -
Navigation antenna assembly

Click here

Navigation ECU

Click here

Cursor or map rotates when vehicle is stopped Proceed to "Cursor or Map Rotates when Vehicle Stopped"

Click here

Navigation ECU

Click here

Vehicle position mark moves in the opposite direction to the vehicle Proceed to "Cursor or Map Rotates when Vehicle Stopped"

Click here

CAN communication system

Click here

Navigation ECU

Click here

Vehicle position mark is not updated Navigation ECU

Click here

Current position display does not appear Navigation antenna assembly

Click here

Navigation ECU

Click here

Voice guidance does not function Proceed to "Voice Guidance does not Function"

Click here

Proceed to "Mute Signal Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Navigation Voice Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Speaker Circuit"

Click here

Proceed to "Stereo Component Amplifier Power Source Circuit"*1

Click here

Stereo component amplifier assembly*1

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Map display is incomplete Proceed to "Map Display Incomplete"

Click here

Proceed to "Display Signal Circuit between Radio Receiver and Extension Module"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Route cannot be calculated Proceed to "Route cannot be Calculated"

Click here

Navigation ECU

Click here

Navigation ECU cannot record memory point registration or each item setting Navigation ECU

Click here

Reverse signal does not change in vehicle signal check mode CAN communication system

Click here

Radio and display receiver assembly

Click here

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

Click here

Radio and display receiver assembly

Click here


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

Click here

Proceed to "Mute Signal Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Sound Signal Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Speaker Circuit"

Click here

Proceed to "Stereo Component Amplifier Power Source Circuit"*1

Click here

Stereo component amplifier assembly*1

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Abnormal noise occurs Proceed to "Noise Occurs"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Sound quality is bad in all modes (Volume is too low) Proceed to "Poor Sound Quality in All Modes (Low Volume)"

Click here

Proceed to "Mute Signal Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Sound Signal Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Speaker Circuit"

Click here

Proceed to "Stereo Component Amplifier Power Source Circuit"*1

Click here

Stereo component amplifier assembly*1

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here


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"

Click here

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

Click here

"iPod" tagging function cannot be used Check if a message indicating that the capacity for tag information is full is displayed -
Proceed to "USB Audio System Recognition/Play Error"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Digital Audio Broadcast (DAB) 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

Click here

Roof antenna pole sub-assembly -
Amplifier antenna assembly

Click here

No. 2 antenna cord sub-assembly

Click here

Antenna cord sub-assembly

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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 -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

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 -
Navigation ECU

Click here

Radio and display receiver assembly

Click here


Voice Recognition Function
Symptom Suspected Area See page
Voice menu screen is not displayed (Voice recognition function does not turn on) Check if the voice recognition prompts function is "On" -
Proceed to "Panel Switches do not Function"

Click here

Radio and display receiver assembly

Click here

When voice recognition switch is pressed, a short beep is emitted but voice cannot be recognized properly Proceed to "Voice is not Recognized"

Click here

Proceed to "Microphone Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

"Bluetooth" Hands-Free Function
Symptom Suspected Area See page
Bluetooth is inoperative Proceed to "Microphone Circuit between Radio Receiver and Extension Module"

Click here

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Cellular phone registration failure Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Cellular phone cannot send/receive Proceed to "Cellular Phone cannot Send/Receive"

Click here

Proceed to "Steering Pad Switch Circuit"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Message that prompts to check the cellular phone is displayed Proceed to "Cellular Phone cannot Send/Receive"

Click here

Navigation ECU

Click here

Phonebook data cannot be transferred manually or automatically Check the automatic phonebook download contact setting -
When transferring phonebook data, OBEX authentication may be required. Enter "1234" into the "Bluetooth" phone -
Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure"

Click here

Navigation ECU

Click here

Volume of other caller's voice is not at an appropriate volume level, there is noise, sound quality is poor or other caller's voice cannot be heard Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Other caller cannot hear your voice at an appropriate volume level, there is noise or an echo, sound quality is poor or other caller cannot hear your voice Proceed to "The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted"

Click here

Proceed to "Microphone Circuit between Microphone and Radio Receiver"

Click here

Proceed to "Microphone Circuit between Radio Receiver and Extension Module"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

E-mail/SMS cannot be received or sent Check whether massages can be received/sent using the cellular phone -
Check that the phone is registered as a hands-free device -
Check the sending and receiving e-mails/SMS via the navigation system setting -
Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

Track information such as track number, track name and 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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

"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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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"

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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

Click here

Navigation ECU

Click here

Radio and display receiver assembly

Click here

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 Stereo Jack Adapter and Extension Module"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

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

Click here

Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

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

Click here

Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

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

Click here

Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

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"

Click here

No. 1 stereo jack adapter assembly

Click here

Navigation ECU

Click here

Fuel Consumption Function
Symptom Suspected Area See page
Graph is not displayed on "Consumption" screen Recheck with the engine running -
Radio and display receiver assembly

Click here

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

Click here

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

Click here

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

Click here

"MirrorLink" Function (w/ "MirrorLink" Function)
Symptom Suspected Area See page
Although USB device 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"

Click here

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

Click here

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

Click here

Connected Services (w/ Connected Services)
Symptom Suspected Area See page
Connection to search engine fails. Proceed to "Connected Services" in System Description

Click here

Contact the mobile network provider and check if the items in "Detail Setting" are set correctly -
Check if the cellular phone is in standby mode -
Check if the cellular phone is compatible with the connected service -
Check if similar symptoms occur with another vehicle -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

POIs are not displayed on list (when using a USB device). Check if POIs are stored in USB device root folders -
Check that POIs with extension ".poi" are stored in the USB device -
Check that 256 characters (ASCII) filename is used for POIs -
Check that the file size of POIs is not 400 kb or more -
Check that nothing has been changed for downloaded POIs other than renaming them -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

POIs cannot be registered to navigation system. Check if the maximum number of memory points has been registered -
Check that nothing has been changed for downloaded POIs other than renaming them -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

Panoramio photos or Google street view cannot be displayed on map even though map scale is changed. Check if Panoramio photos or Google street view can be displayed at a different point -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

Google street view "Next" or "Previous" switches cannot be selected. Wait for 90 seconds and check if the switches can be selected -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

Traffic Information (w/ Connected Services)
Symptom Suspected Area See page
TPEG information (traffic) is not displayed on navigation screen. After turning the ignition switch from off to ACC, check if TPEG information (traffic) is displayed -
Check that the traffic messages setting is set to a position other than off. If the symptom occurs in the roaming area, check the roaming reception setting -
Check if similar symptoms occur with another vehicle -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

TPEG information (traffic) cannot be received automatically. Check that the traffic messages setting is set to auto. If the symptom occurs in the roaming area, check the roaming reception setting -
Change the traffic messages setting to auto and wait for 10 minutes with the navigation screen on. If an error code or error message is displayed, perform the inspection according to the displayed error code or error message -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

TPEG information (traffic) cannot be received manually. Check that the traffic messages setting is set to manual. If the symptom occurs in the roaming area, check the roaming reception setting -
Push the update switch and wait for 1 minute with the navigation screen on. Then, if an error code or error message is displayed, perform the inspection according to the displayed error code or error message -
Navigation ECU

Click here

Radio and display receiver assembly

Click here

Detour search using TPEG information does not operate. Check that "Dynamic reroute" is set to "Auto" or "Manual" -
Navigation ECU

Click here

Radio and display receiver assembly

Click here