Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- 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
DISPLAY FUNCTION
| Symptom | Suspected Area | Reference |
|---|---|---|
| Pressing power switch does not turn on system. | Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT |
| Proceed to AVC-LAN Circuit | AVC-LAN CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Black screen (no image appears on navigation/audio screen). | Proceed to No Image Appears on Multi-display | NO IMAGE APPEARS ON MULTI-DISPLAY |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Proceed to Illumination Circuit | ILLUMINATION CIRCUIT | |
| Proceed to AVC-LAN Circuit | AVC-LAN CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Illumination for panel switch does not come on with light control switch on. | Proceed to Illumination for Panel Switch does not Come on with Tail Switch ON | ILLUMINATION FOR PANEL SWITCH DOES NOT COME ON WITH TAIL SWITCH ON |
| Proceed to Illumination Circuit | ILLUMINATION CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Display does not dim (night screen) with tail switch on. | Proceed to Display does not Dim when Light Control Switch is Turned ON | DISPLAY DOES NOT DIM WHEN LIGHT CONTROL SWITCH IS TURNED ON |
| Proceed to Illumination Circuit | ILLUMINATION CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Power does not turn off (screen remains on). | Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Panel switches do not function. | Proceed to Panel Switches do not Function | PANEL SWITCHES DO NOT FUNCTION |
| Proceed to Steering Pad Switch Circuit | STEERING PAD SWITCH CIRCUIT | |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Touch panel switch does not function. | Proceed to Touch Panel Switch does not Function | TOUCH PANEL SWITCH DOES NOT FUNCTION |
| Proceed to Steering Pad Switch Circuit | STEERING PAD SWITCH CIRCUIT | |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Navigation screen is not displayed. | Map disc | - |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Navigation screen flicker or color distortion. | Proceed to Screen Flicker or Color Distortion | SCREEN FLICKER OR COLOR DISTORTION |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Navigation function switches can be operated while vehicle running | Proceed to Vehicle Speed Signal Circuit between Navigation Receiver and Combination Meter | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND COMBINATION METER |
| Display panel does not open, tilt or tilts improperly | Proceed to Display Panel does not Open, Tilt, or Tilts Improperly | DISPLAY PANEL DOES NOT OPEN, TILT OR TILTS IMPROPERLY |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Image displayed by television display is not displayed by navigation receiver* | Proceed to Display Signal Circuit between Television Display Assembly and Navigation Receiver Assembly | DISPLAY SIGNAL CIRCUIT BETWEEN TELEVISION DISPLAY ASSEMBLY AND NAVIGATION RECEIVER ASSEMBLY |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Television display | REMOVAL | |
| HINT: *: w/ Rear Seat Entertainment System |
||
Navigation Function
NAVIGATION FUNCTION
| Symptom | Suspected Area | Reference |
|---|---|---|
| Map disc cannot be inserted. | Proceed to Map Disc cannot be Inserted | MAP DISC CANNOT BE INSERTED |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Map disc cannot be ejected. | Proceed to Map Disc cannot be Ejected | MAP DISC CANNOT BE EJECTED |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Vehicle position mark deviates greatly. | Proceed to Vehicle Position Mark Deviates Greatly | VEHICLE POSITION MARK DEVIATES GREATLY |
| Navigation antenna | NAVIGATION ANTENNA | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Cursor or map rotates when vehicle is stopped. | Proceed to Cursor or Map Rotates when Vehicle is Stopped | CURSOR OR MAP ROTATES WHEN VEHICLE STOPPED |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Vehicle position mark is not updated. | Proceed to Vehicle Position Mark is not Updated | VEHICLE POSITION MARK IS NOT UPDATED |
| Map disc | - | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Current position display does not appear. | Proceed to Current Position Display does not Appear | CURRENT POSITION DISPLAY DOES NOT APPEAR |
| Map disc | - | |
| Navigation antenna | NAVIGATION ANTENNA | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| GPS mark is not displayed. | Proceed to GPS Mark is not Displayed | GPS MARK IS NOT DISPLAYED |
| Navigation antenna | NAVIGATION ANTENNA | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Voice guidance does not function. | Proceed to Voice Guidance does not Function | VOICE GUIDANCE DOES NOT FUNCTION |
| Map disc | - | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Map display is incomplete. | Proceed to Map Display Incomplete | MAP DISPLAY INCOMPLETE |
| Map disc | - | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Route cannot be calculated. | Proceed to Route cannot be Calculated | ROUTE CANNOT BE CALCULATED |
| Map disc | - | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Voice recognition difficulty. | Proceed to Voice Recognition Difficulty | VOICE RECOGNITION DIFFICULTY |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Voice is not recognized. | Proceed to Voice is not Recognized | VOICE IS NOT RECOGNIZED |
| Proceed to Microphone Circuit between Microphone and Navigation Receiver | MICROPHONE CIRCUIT BETWEEN MICROPHONE AND NAVIGATION RECEIVER ASSEMBLY | |
| Proceed to Steering Pad Switch Circuit | STEERING PAD SWITCH CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Speed signal does not change in navigation check mode. | Proceed to Vehicle Speed Signal Circuit between Navigation Receiver and Combination Meter | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND COMBINATION METER |
| Reverse signal does not change in navigation check mode. | Proceed to Reverse Signal Circuit | REVERSE SIGNAL CIRCUIT |
Steering Pad Switch Function
STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area | Reference |
|---|---|---|
| System cannot be operated by steering pad switch. | Proceed to Steering Pad Switch Circuit | STEERING PAD SWITCH CIRCUIT |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Illumination for steering pad switch does not come on with light control switch ON. | Proceed to Illumination Circuit | ILLUMINATION CIRCUIT |
| Navigation receiver assembly | NAVIGATION RECEIVER |
"Bluetooth" Function
BLUETOOTH FUNCTION
| Symptom | Suspected Area | Reference |
|---|---|---|
| Cellular phone registration failure, phone directory transfer failure. | Proceed to Cellular Phone Registration Failure, Phone Directory Transfer Failure | CELLULAR PHONE REGISTRATION FAILURE, PHONE DIRECTORY TRANSFER FAILURE |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Cellular phone cannot send/receive. | Proceed to Cellular Phone cannot Send/Receive | CELLULAR PHONE CANNOT SEND/RECEIVE |
| Proceed to Steering Pad Switch Circuit | STEERING PAD SWITCH CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Cannot call in a certain place. | Proceed to Cannot Call in a Certain Place | CANNOT CALL IN A CERTAIN PLACE |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Other callers voice cannot be heard, is too quiet, or distorted. | Proceed to The Other Callers Voice cannot be Heard, is too Quiet, or Distorted | THE OTHER CALLER'S VOICE CANNOT BE HEARD, IS TOO QUIET, OR DISTORTED |
| 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 | THE OTHER CALLER CANNOT HEAR YOUR VOICE, OR YOUR VOICE IS TOO QUIET OR DISTORTED |
| Proceed to Microphone Circuit between Microphone and Navigation Receiver | MICROPHONE CIRCUIT BETWEEN MICROPHONE AND NAVIGATION RECEIVER ASSEMBLY | |
| Navigation receiver assembly | NAVIGATION RECEIVER |
Audio Function
AUDIO FUNCTION
| Symptom | Suspected Area | Reference |
|---|---|---|
| No sound can be heard from speakers (audio is mute). | Proceed to No Sound can be Heard from Speakers | NO SOUND CAN BE HEARD FROM SPEAKERS |
| Proceed to Speaker Circuit | SPEAKER CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Radio broadcast cannot be received or poor reception. | Proceed to Radio Broadcast cannot be Received or Poor Reception | RADIO BROADCAST CANNOT BE RECEIVED OR POOR RECEPTION |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| CD cannot be inserted/played or CD is ejected right after insertion. | Proceed to CD cannot be Inserted or is Ejected Right After Insertion | CD CANNOT BE INSERTED OR IS EJECTED RIGHT AFTER INSERTION |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| CD cannot be ejected. | Proceed to CD cannot be Ejected | CD CANNOT BE EJECTED |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| CD sound skips. | Proceed to CD Sound Skips | CD SOUND SKIPS |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Abnormal noise occurs. | Proceed to Noise Occurs | NOISE OCCURS |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Poor sound quality in all modes (low volume). | Proceed to Poor Sound Quality in All Modes (Low Volume) | POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| External device sound cannot be heard or sound quality bad (stereo jack is used). | Proceed to Sound Signal Circuit between Navigation Receiver and Stereo Jack Adapter | SOUND SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND STEREO JACK ADAPTER |
| Stereo jack adapter assembly | REMOVAL | |
| Proceed to Navigation Receiver Assembly Power Source Circuit | NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| Music played by television display can be heard through headphones but cannot be heard from speakers*. | Proceed to Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly | SOUND SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND TELEVISION DISPLAY ASSEMBLY |
| Television display | REMOVAL | |
| Navigation receiver assembly | NAVIGATION RECEIVER | |
| HINT: *: w/ Rear Seat Entertainment System |
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