NAVIGATION SYSTEM PROBLEM SYMPTOMS TABLE
Note
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System Click here.
Tech Tips
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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.
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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 "Navigation Receiver Assembly Power Source Circuit" | |
| Navigation ECU sub-assembly | ||
| Black screen (No image appears on navigation/audio screen.) | Proceed to "Black Screen" | |
| Proceed to "Check Software Error History" in Operation Check | ||
| Navigation ECU sub-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" | ||
| Navigation ECU sub-assembly | ||
| Power does not turn off. (Screen remains on.) | Proceed to "Navigation Receiver Assembly Power Source Circuit" | |
| Navigation ECU sub-assembly | ||
| Display panel does not open, tilt, or tilts improperly. | Proceed to "Display Panel does not Open, Tilt or Tilts Improperly" | |
| Proceed to "Navigation Receiver Assembly Power Source Circuit" | ||
| Navigation ECU sub-assembly | ||
| Screen is distorted. | Proceed to "Navigation Receiver Assembly Power Source Circuit" | |
| Navigation ECU sub-assembly | ||
| Screen flicker or color distortion | Proceed to "Screen Flicker or Color Distortion" | |
| Proceed to "Navigation Receiver Assembly Power Source Circuit" | ||
| Navigation ECU sub-assembly |
| 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" | |
| Proceed to "Illumination Circuit" | ||
| Navigation ECU sub-assembly | ||
| Panel switches do not function. | Proceed to "Panel Switches do not Function" | |
| Proceed to "Navigation Receiver Assembly Power Source Circuit" | ||
| Navigation ECU sub-assembly | ||
| Touch panel switch does not function. | Proceed to "Touch Panel Switch does not Function" | |
| Proceed to "Navigation Receiver Assembly Power Source Circuit" | ||
| Navigation ECU sub-assembly | ||
| The handwriting input screen is not displayed or potential matches for the character currently being entered and potential matches for next character are not displayed. | Hard disk drive | |
| Navigation ECU sub-assembly | ||
| Navigation function switches can be operated while vehicle is driving. | Proceed to "Parking Brake Switch Circuit" | |
| Navigation ECU sub-assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| System cannot be operated by steering pad switch. | Proceed to "Panel Switches do not Function" | |
| Proceed to "Steering Pad Switch Circuit" | ||
| Navigation ECU sub-assembly | ||
| Illumination for steering pad switch does not come on with tail switch on. | Proceed to "Illumination Circuit" | |
| Navigation ECU sub-assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| GPS mark is not displayed. | Proceed to "GPS Mark is not Displayed" | |
| Navigation antenna assembly | ||
| Navigation ECU sub-assembly | ||
| Date and time on navigation screen is different from actual date and time. | Proceed to "GPS Mark is not Displayed" | |
| Navigation antenna assembly | ||
| Navigation ECU sub-assembly | ||
| Vehicle position mark deviates from correct position and does not return to correct position. | Proceed to "GPS Mark is not Displayed" | |
| Navigation antenna assembly | ||
| Navigation ECU sub-assembly | ||
| Cursor or map rotates when vehicle is stopped. | Proceed to "Cursor or Map Rotates when Vehicle Stopped" | |
| Navigation ECU sub-assembly | ||
| Vehicle position mark moves in the opposite direction to the vehicle. | Proceed to "Cursor or Map Rotates when Vehicle Stopped" | |
| Proceed to "Reverse Signal Circuit" | ||
| Navigation ECU sub-assembly | ||
| Vehicle position mark deviates from and returns to correct position repeatedly even though GPS mark is displayed. | Proceed to "GPS Mark is not Displayed" | |
| 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 | ||
| Navigation ECU sub-assembly | ||
| Vehicle position mark moves slow or fast. | Proceed to "GPS Mark is not Displayed" | |
| Navigation antenna assembly | ||
| Navigation ECU sub-assembly | ||
| Voice guidance does not function. | Proceed to "Voice Guidance does not Function" | |
| Proceed to "Speaker Circuit" | ||
| Stereo component amplifier assembly*1 | ||
| Navigation ECU sub-assembly | ||
| Map display is incomplete. | Hard disk drive | |
| Navigation ECU sub-assembly | ||
| Route cannot be calculated. | Proceed to "Route cannot be Calculated" | |
| Navigation ECU sub-assembly | ||
| Navigation system cannot record memory point registration or each item setting. | Hard disk drive | |
| Navigation ECU sub-assembly | ||
| A message indicating to wait for a while because of low temperature is displayed. | Start the engine and increase cabin temperature (near navigation ECU sub-assembly). | - |
| Hard disk drive | ||
| Navigation ECU sub-assembly | ||
| A message is displayed because map data cannot be read, and current position screen is not displayed. | If message appears only when driving on rough roads, check if message disappears when vehicle is stopped. | - |
| Hard disk drive | ||
| Navigation ECU sub-assembly | ||
| Map screen turns white or blue. (GPS receiving status is displayed normally, and switches and own vehicle position mark are also displayed normally.) | Change map scale to smallest (a scale that shows a large area). | - |
| Hard disk drive | ||
| Navigation ECU sub-assembly | ||
| Customizable parameters cannot be changed. (Customizable parameters can be changed by using the intelligent tester.) | Navigation ECU sub-assembly | |
| The password set using the memory point export/import function has been forgotten. | Proceed to "Clear Backup Password of Export/Import Memory Point Function" in Operation Check | |
| Reverse signal does not change in vehicle signal check mode. | Proceed to "Reverse Signal Circuit" | |
| Navigation ECU sub-assembly | ||
| Parking brake switch signal does not change in vehicle signal check mode. | Proceed to "Parking Brake Switch Circuit" | |
| Navigation ECU sub-assembly |
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*1: w/ Front Center Speaker
| Symptom | Suspected Area | See page |
|---|---|---|
| No sound can be heard from speakers. | Proceed to "No Sound can be Heard from Speakers" | |
| Proceed to "Speaker circuit" | ||
| Proceed to "Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly"*1 | ||
| Stereo component amplifier assembly*2 | ||
| Navigation ECU sub-assembly | ||
| Abnormal noise occurs. | Proceed to "Noise Occurs" | |
| Stereo component amplifier assembly*2 | ||
| Navigation ECU sub-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" | ||
| Proceed to "Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly"*1 | ||
| Stereo component amplifier assembly*2 | ||
| Navigation ECU sub-assembly | ||
| ASL does not function. | Check that the ASL function is "On". | - |
| Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter"*2 | ||
| Stereo component amplifier assembly*2 | ||
| Navigation ECU sub-assembly | ||
| RSE sound cannot be heard or sound quality is bad.*1 | Proceed to "Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly" | |
| Proceed to "Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly" | ||
| Navigation ECU sub-assembly | ||
| Television display assembly |
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*1: w/o Front Center Speaker
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*2: w/ Front Center Speaker
| Symptom | Suspected Area | See page |
|---|---|---|
| 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.) | Navigation ECU sub-assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Disc cannot be inserted/played or disc is ejected right after insertion. | Proceed to "Check Optical Disc Error History" in Operation Check | |
| Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | ||
| Disc cannot be ejected. | Proceed to "Check Optical Disc Error History" in Operation Check | |
| Proceed to "Disc cannot be Ejected" | ||
| Disc sound skips. | Proceed to "Check Optical Disc Error History" in Operation Check | |
| Proceed to "CD/DVD Sound Skips" | ||
| While vehicle is stopped, DVD cannot be viewed even when parking brake is set. (Parking brake switch is on.)*1 | Proceed to "Parking Brake Switch Circuit" | |
| Navigation ECU sub-assembly | ||
| Screen color is poor only when watching DVD.*1 | Change the color settings on the screen adjustment screen. | - |
| Navigation ECU sub-assembly | ||
| Sound quality is bad only when disc is played. (Volume is too low.) | Proceed to "Check Optical Disc Error History" in Operation Check | |
| Proceed to "Sound Quality is Bad Only when Disc is played (Volume is Too Low)" |
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*1: w/ DVD Player
| Symptom | Suspected Area | See page |
|---|---|---|
| Screen is distorted or not displayed only when using the device connected to the video (video adapter) terminal. | Check if appropriate image signal setting (NTSC/PAL) is selected. | - |
| Connect a known good device to the video (video adapter) terminal and check if the image is output. | - | |
| Proceed to "Display Signal Circuit between Navigation Receiver Assembly and Video Terminal" | ||
| Video (video adapter) terminal | ||
| Navigation ECU sub-assembly | ||
| Sound quality is bad, no sound can be heard or sound skips only when using the device connected to the video (video adapter) terminal. | Connect other devices to the video (video adapter) terminal and check if sound is output. | - |
| Proceed to "Sound Signal Circuit between Navigation Receiver Assembly and Video Terminal" | ||
| Video (video adapter) terminal | ||
| Navigation ECU sub-assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Voice menu screen is not displayed. (Voice recognition function does not turn on.) | Check if the voice recognition prompt function is "On". | - |
| Proceed to "Panel Switches do not Function" | ||
| Proceed to "Steering Pad Switch Circuit" | ||
| Navigation ECU sub-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 Navigation Receiver Assembly" | ||
| Hard disk drive | ||
| Navigation ECU sub-assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| "Bluetooth" is inoperative. | Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly" | |
| Navigation ECU sub-assembly | ||
| Cellular phone registration failure | Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | |
| Navigation ECU sub-assembly | ||
| Cellular phone cannot make outgoing/incoming calls or call in a certain place. | Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls" | |
| Navigation ECU sub-assembly | ||
| Message that prompts to check the cellular phone is displayed. | Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls" | |
| Navigation ECU sub-assembly | ||
| Phonebook data cannot be transferred manually or automatically. | Check the automatically download contact setting. | - |
| When transferring phonebook data, OBEX authentication may be required. Enter "1234" into the "Bluetooth" phone. | - | |
| Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | ||
| Navigation ECU sub-assembly | ||
| 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 "Check Hands-free Voice Quality and Volume Setting" in Operation Check | |
| Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted" | ||
| Navigation ECU sub-assembly | ||
| Stereo component amplifier assembly*1 | ||
| 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 "Check Hands-free Voice Quality and Volume Setting" in Operation Check | |
| Proceed to "The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted" | ||
| Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly" | ||
| Navigation ECU sub-assembly |
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*1: w/ Front Center Speaker
| Symptom | Suspected Area | See page |
|---|---|---|
| Portable player cannot be registered. | Proceed to "Portable Player cannot be Registered" | |
| Navigation ECU sub-assembly | ||
| Portable player cannot be connected manually/automatically. | Proceed to "Portable Player cannot be Registered" | |
| Proceed to "Portable Player cannot be Connected Manually/Automatically" | ||
| Navigation ECU sub-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" | ||
| Navigation ECU sub-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" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-assembly | ||
| Portable player does not play. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-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" | |
| Navigation ECU sub-assembly | ||
| Noise occurs or sound skips when portable player plays. | Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" | |
| Navigation ECU sub-assembly | ||
| Registered device cannot be deleted. | Proceed to "Registered Device cannot be Deleted" | |
| Navigation ECU sub-assembly |
| 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 Navigation Receiver and Stereo Jack Adapter" | |
| No. 1 stereo jack adapter assembly | ||
| Navigation ECU sub-assembly | ||
| USB device or "iPod" is not recognized. | Proceed to "USB Audio System Recognition/Play Error" | |
| No. 1 stereo jack adapter assembly | ||
| Navigation ECU sub-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 | ||
| Navigation ECU sub-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 | ||
| Navigation ECU sub-assembly | ||
| 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" | |
| No. 1 stereo jack adapter assembly | ||
| Navigation ECU sub-assembly | ||
| Screen is distorted or not displayed only when using the video function of an "iPod".*1 | Check if "iPod" is set to output images. | - |
| Check if appropriate image signal setting (NTSC/PAL) is selected. | - | |
| Check if video sound input is set to "VTR". | - | |
| Proceed to "Display Signal Circuit between Navigation Receiver Assembly and Video Terminal" | ||
| Video (video adapter) terminal | ||
| Navigation ECU sub-assembly |
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*1: w/ Front Center Speaker
| Symptom | Suspected Area | See page |
|---|---|---|
| "Fuel Consumption" icon is dimmed. | Check if other icons or items displayed on screen have any problems. | - |
| Navigation ECU sub-assembly | ||
| Graph is not displayed on "Trip Information" screen. | Recheck with the engine running. | - |
| Navigation ECU sub-assembly | ||
| Cruise range is not displayed on "Trip Information" screen. | Turn engine switch on (IG) and recheck. | - |
| Navigation ECU sub-assembly | ||
| Graph is not updated on "Past record" screen even though "Clear" is selected. | Turn engine switch on (IG) and recheck. | - |
| Navigation ECU sub-assembly | ||
| Graph is not displayed on "Past record" screen. | Turn engine switch on (IG) and recheck. | - |
| Navigation ECU sub-assembly |