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 |
|---|---|---|
| Pressing PWR switch does not turn on system. | Proceed to "Pressing Power Switch does not Turn ON System" | Refer to Pressing Power Switch does not Turn on System |
| Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| AVC-LAN circuit | Refer to AVC-LAN Circuit | |
| Multi-display | Refer to REMOVAL | |
| Black screen (No image appears on navigation/audio screen). | Proceed to "No Image Appears on Multi-display" | Refer to No Image Appears on Multi-display |
| Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| Illumination circuit | Refer to Illumination Circuit | |
| AVC-LAN circuit | Refer to AVC-LAN Circuit | |
| Multi-display | Refer to REMOVAL | |
| Illumination for panel switch does not come on with TAIL switch on. | Proceed to "Illumination for Panel Switch does not Come on with Tail Switch ON" | Refer to Illumination for Panel Switch does not Come on with Tail Switch ON |
| Illumination circuit | Refer to Illumination Circuit | |
| Multi-display | Refer to REMOVAL | |
| Display does not dim (Night Screen) with TAIL switch on. | Proceed to "Display does not DIM when Light Control Switch is Turned ON" | Refer to Display does not Dim when Light Control Switch is Turned ON |
| Illumination circuit | Refer to Illumination Circuit | |
| Multi-display | Refer to REMOVAL | |
| Power does not turn off (The screen remains on). | Multi-display power source circuit | Refer to Multi-display Power Source Circuit |
| Multi-display | Refer to REMOVAL | |
| Panel switches do not function. | Proceed to "Panel Switches do not Function" | Refer to Panel Switches do not Function |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| Multi-display | Refer to REMOVAL | |
| Touch panel switch does not function. | Proceed to "Touch Panel Switch does not Function" | Refer to Touch Panel Switch does not Function |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| Multi-display | Refer to REMOVAL | |
| Navigation screen is not displayed. | Proceed to "Display Signal Circuit between Navigation ECU and Multi-display" | Refer to Display Signal Circuit between Navigation ECU and Multi-display |
| Map disc | - | |
| Navigation ECU | Refer to REMOVAL | |
| Multi-display | Refer to REMOVAL | |
| Navigation screen flicker or color distortion. | Proceed to "Screen Flicker or Color Distortion" | Refer to Screen Flicker or Color Distortion |
| Proceed to "Display Signal Circuit between Navigation ECU and Multi-display" | Refer to Display Signal Circuit between Navigation ECU and Multi-display | |
| Navigation ECU | Refer to REMOVAL | |
| Multi-display | Refer to REMOVAL | |
| DVD image cannot be displayed on multi-display. (Parking brake is on.)*1 | Proceed to "Display Signal Circuit between Multi-display and Radio Receiver" | Refer to Display Signal Circuit between Multi-display and Radio Receiver |
| Parking brake switch circuit | Refer to Parking Brake Switch Circuit | |
| Radio Receiver | Refer to REMOVAL | |
| Multi-display | Refer to REMOVAL | |
| Navigation function switches can be operated while vehicle is running. | Proceed to "Vehicle Speed Signal Circuit between Multi-display and Combination Meter" | Refer to Vehicle Speed Signal Circuit between Multi-display and Combination Meter |
NAVIGATION FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Map disc cannot be inserted. | Proceed to "Map Disc cannot be Inserted" | Refer to Map Disc cannot be Inserted |
| Navigation ECU power source circuit | Refer to Navigation ECU Power Source Circuit | |
| Navigation ECU | Refer to REMOVAL | |
| Map disc cannot be ejected. | Proceed to "Map Disc cannot be Ejected" | Refer to Map Disc cannot be Ejected |
| Navigation ECU power source circuit | Refer to Navigation ECU Power Source Circuit | |
| Navigation ECU | Refer to REMOVAL | |
| Vehicle position mark deviates greatly. | Proceed to "Vehicle Position Mark Deviates Greatly" | Refer to Vehicle Position Mark Deviates Greatly |
| GPS antenna | Refer to REMOVAL | |
| Navigation ECU | Refer to REMOVAL | |
| Cursor or map rotates when vehicle is stopped. | Proceed to "Cursor or Map Rotates when Vehicle is Stopped" | Refer to Cursor or Map Rotates when Vehicle Stopped |
| Navigation ECU | Refer to REMOVAL | |
| Vehicle position mark is not updated. | Proceed to "Vehicle Position Mark is not Updated" | Refer to Vehicle Position Mark is not Updated |
| Map disc | - | |
| Navigation ECU | Refer to REMOVAL | |
| Current position display does not appear. | Proceed to "Current Position Display does not Appear" | Refer to Current Position Display does not Appear |
| Map disc | - | |
| GPS antenna | Refer to REMOVAL | |
| Navigation ECU | Refer to REMOVAL | |
| GPS Mark is not displayed. | Proceed to "GPS Mark is not Displayed" | Refer to GPS Mark is not Displayed |
| GPS antenna | Refer to REMOVAL | |
| Navigation ECU | Refer to REMOVAL | |
| Voice guidance does not function. | Proceed to "Voice Guidance does not Function" | Refer to Voice Guidance does not Function |
| Navigation voice circuit | Refer to Navigation Voice Circuit | |
| Map disc | - | |
| Navigation ECU | Refer to REMOVAL | |
| Stereo component amplifier | Refer to REMOVAL | |
| Map display incomplete. | Proceed to "Map Display Incomplete" | Refer to Map Display Incomplete |
| Map disc | - | |
| Navigation ECU | Refer to REMOVAL | |
| Route cannot be calculated. | Proceed to "Route cannot be Calculated" | Refer to Route cannot be Calculated |
| Map disc | - | |
| Navigation ECU | Refer to REMOVAL | |
| Voice recognition difficulty. | Proceed to "Voice Recognition Difficulty" | Refer to Voice Recognition Difficulty |
| Navigation ECU | Refer to REMOVAL | |
| Voice is not recognized. | Proceed to "Voice is not Recognized" | Refer to Voice is not Recognized |
| Proceed to "Microphone circuit between Overhead J/B and Multi-display" | Refer to Microphone Circuit between Overhead J/B and Multi-display | |
| Proceed to "Microphone circuit between Multi-display and Navigation ECU" | Refer to Microphone Circuit between Multi-display and Navigation ECU | |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| Microphone | Refer to REMOVAL | |
| Microphone amplifier | Refer to REMOVAL - Step 3 | |
| Navigation ECU | Refer to REMOVAL | |
| Speed signal does not change in the navigation check mode. | Proceed to "Vehicle Speed Signal Circuit between Navigation ECU and Multi-display" | Refer to Vehicle Speed Signal Circuit between Navigation ECU and Multi-Display |
| Reverse signal does not change in the navigation check mode. | Proceed to "Reverse Signal Circuit" | Refer to Reverse Signal Circuit |
STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| The system cannot be operated by the steering pad switch. | Steering pad switch circuit | Refer to Steering Pad Switch Circuit |
| Radio receiver | Refer to REMOVAL | |
| Illumination for steering pad switch does not come on with tail switch on. | Illumination circuit | Refer to Illumination Circuit |
| Radio receiver | Refer to REMOVAL |
"BLUETOOTH" FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Cellular phone registration failure, phone directory transfer failure. | Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure" | Refer to Cellular Phone Registration Failure, Phone Directory Transfer Failure |
| Cellular phone cannot send/receive. | Proceed to "Cellular Phone cannot Send/Receive" | Refer to Cellular Phone cannot Send/Receive |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| Radio receiver | Refer to REMOVAL | |
| Cannot call in a certain place. | Proceed to "Cannot call in a Certain Place" | Refer to Cannot Call in a Certain Place |
| The other caller's voice cannot be heard, is too quiet, or distorted. | Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted" | Refer to The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted |
| Multi-display | Refer to REMOVAL | |
| The other caller cannot hear your voice, or your voice is too quiet or distorted. | Proceed to "The Other Caller cannot Heard Your Voice, or Your Voice is too Quiet or Distorted" | Refer to The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted |
| Proceed to "Microphone circuit between Overhead J/B and Multi-display" | Refer to Microphone Circuit between Overhead J/B and Multi-display | |
| Microphone | Refer to REMOVAL | |
| Microphone amplifier | Refer to REMOVAL - Step 3 | |
| Multi-display | Refer to REMOVAL |