| Last Modified: 11-29-2007 | 1.6 T | |
| Service Category: Audio/Visual/Telematics | Section: Navigation/Multi Info Display | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002LQ300IX |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) | ||
PROBLEM SYMPTOMS TABLE
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
|
Symptom |
Suspected Area |
See page |
|---|---|---|
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Pressing power switch does not turn on system. |
Proceed to Navigation Receiver Assembly Power Source Circuit |
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Proceed to AVC-LAN Circuit |
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Navigation receiver assembly |
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Black screen (no image appears on navigation/audio screen). |
Proceed to No Image Appears on Multi-display |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Proceed to Illumination Circuit |
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Proceed to AVC-LAN Circuit |
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Navigation receiver assembly |
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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 |
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Proceed to Illumination Circuit |
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Navigation receiver assembly |
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Display does not dim (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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Navigation receiver assembly |
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Power does not turn off (screen remains on). |
Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation receiver assembly |
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Panel switches do not function. |
Proceed to Panel Switches do not Function |
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Proceed to Steering Pad Switch Circuit |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation 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 Steering Pad Switch Circuit |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation receiver assembly |
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Navigation screen is not displayed. |
Map disc |
- |
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Navigation receiver assembly |
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Navigation screen flicker or color distortion. |
Proceed to Screen Flicker or Color Distortion |
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Navigation receiver assembly |
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Navigation function switches can be operated while vehicle running |
Proceed to Vehicle Speed Signal Circuit between Navigation Receiver and Combination Meter |
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Display panel does not open, tilt or tilts improperly |
Proceed to Display Panel does not Open, Tilt, or Tilts Improperly |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation receiver assembly |
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Image displayed by television display is not displayed by navigation receiver* |
Proceed to Display Signal Circuit between Television Display Assembly and Navigation Receiver Assembly |
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Navigation receiver assembly |
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Television display |
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HINT:
*: w/ Rear Seat Entertainment System
Navigation Function
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Map disc cannot be inserted. |
Proceed to Map Disc cannot be Inserted |
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Navigation receiver assembly |
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Map disc cannot be ejected. |
Proceed to Map Disc cannot be Ejected |
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Navigation receiver assembly |
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Vehicle position mark deviates greatly. |
Proceed to Vehicle Position Mark Deviates Greatly |
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Navigation antenna |
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Navigation receiver assembly |
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Cursor or map rotates when vehicle is stopped. |
Proceed to Cursor or Map Rotates when Vehicle is Stopped |
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Navigation receiver assembly |
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Vehicle position mark is not updated. |
Proceed to Vehicle Position Mark is not Updated |
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Map disc |
- |
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Navigation receiver assembly |
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Current position display does not appear. |
Proceed to Current Position Display does not Appear |
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Map disc |
- |
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Navigation antenna |
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Navigation receiver assembly |
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GPS mark is not displayed. |
Proceed to GPS Mark is not Displayed |
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Navigation antenna |
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Navigation receiver assembly |
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Voice guidance does not function. |
Proceed to Voice Guidance does not Function |
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Map disc |
- |
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Navigation receiver assembly |
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Map display is incomplete. |
Proceed to Map Display Incomplete |
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Map disc |
- |
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Navigation receiver assembly |
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Route cannot be calculated. |
Proceed to Route cannot be Calculated |
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Map disc |
- |
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Navigation receiver assembly |
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Voice recognition difficulty. |
Proceed to Voice Recognition Difficulty |
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Navigation receiver assembly |
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Voice is not recognized. |
Proceed to Voice is not Recognized |
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Proceed to Microphone Circuit between Microphone and Navigation Receiver |
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Proceed to Steering Pad Switch Circuit |
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Navigation receiver assembly |
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Speed signal does not change in navigation check mode. |
Proceed to Vehicle Speed Signal Circuit between Navigation Receiver and Combination Meter |
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Reverse signal does not change in navigation check mode. |
Proceed to Reverse Signal Circuit |
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Steering Pad Switch Function
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
System cannot be operated by steering pad switch. |
Proceed to Steering Pad Switch Circuit |
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Navigation receiver assembly |
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Illumination for steering pad switch does not come on with light control switch ON. |
Proceed to Illumination Circuit |
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Navigation receiver assembly |
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"Bluetooth" Function
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Cellular phone registration failure, phone directory transfer failure. |
Proceed to Cellular Phone Registration Failure, Phone Directory Transfer Failure |
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Navigation receiver assembly |
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Cellular phone cannot send/receive. |
Proceed to Cellular Phone cannot Send/Receive |
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Proceed to Steering Pad Switch Circuit |
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Navigation receiver assembly |
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Cannot call in a certain place. |
Proceed to Cannot Call in a Certain Place |
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Navigation receiver assembly |
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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 |
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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 |
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Proceed to Microphone Circuit between Microphone and Navigation Receiver |
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Navigation receiver assembly |
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Audio Function
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
No sound can be heard from speakers (audio is mute). |
Proceed to No Sound can be Heard from Speakers |
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Proceed to Speaker Circuit |
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Navigation receiver assembly |
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Radio broadcast cannot be received or poor reception. |
Proceed to Radio Broadcast cannot be Received or Poor Reception |
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Navigation receiver assembly |
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CD cannot be inserted/played or CD is ejected right after insertion. |
Proceed to CD cannot be Inserted or is Ejected Right After Insertion |
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Navigation receiver assembly |
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CD cannot be ejected. |
Proceed to CD cannot be Ejected |
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Navigation receiver assembly |
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CD sound skips. |
Proceed to CD Sound Skips |
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Navigation receiver assembly |
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Abnormal noise occurs. |
Proceed to Noise Occurs |
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Navigation receiver assembly |
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Poor sound quality in all modes (low volume). |
Proceed to Poor Sound Quality in All Modes (Low Volume) |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation receiver assembly |
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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 |
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Stereo jack adapter assembly |
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Proceed to Navigation Receiver Assembly Power Source Circuit |
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Navigation receiver assembly |
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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 |
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Television display |
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Navigation receiver assembly |
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HINT:
*: w/ Rear Seat Entertainment System
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