Problem Symptoms Table
HINT:
- Before inspecting the suspected areas listed in the table below, check the fuse and relay.
- Before inspecting the suspected areas listed in the table below, check the DTCs.
- Methods used to verify the cause of the problem are listed in order of probability in the suspected area column.
DISPLAY FUNCTION:
| Symptom | Suspected Area | See page |
|---|---|---|
| Pressing PWR switch does not turn on system. | 1. Proceed to "Pressing Power Switch does not Turn ON System" | Refer to Pressing Power Switch does not Turn on System |
| 2. Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| 3. AVC-LAN circuit | Refer to AVC-LAN Circuit | |
| 4. Multi-display | Refer to REMOVAL | |
| Black screen (No image appears on navigation/audio screen). | 1. Proceed to "No Image Appears on Multi-display" | Refer to No Image Appears on Multi-display |
| 2. Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| 3. Illumination circuit | Refer to Illumination Circuit | |
| 4. AVC-LAN circuit | Refer to AVC-LAN Circuit | |
| 5. Multi-display | Refer to REMOVAL | |
| Illumination for panel switch does not come on with TAIL switch on. | 1. 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 |
| 2. Illumination circuit | Refer to Illumination Circuit | |
| 3. Multi-display | Refer to REMOVAL | |
| Display does not dim (Night Screen) with TAIL switch on. | 1. 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 |
| 2. Dimmer signal circuit | Refer to Dimmer Signal Circuit | |
| 3. Multi-display | Refer to REMOVAL | |
| Power does not turn off (The screen remains on). | 1. Multi-display power source circuit | Refer to Multi-display Power Source Circuit |
| 2. Multi-display | Refer to REMOVAL | |
| Panel switches do not function. | 1. Proceed to "Panel Switches do not Function" | Refer to Panel Switches do not Function |
| 2. Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| 3. Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| 4. Multi-display | Refer to REMOVAL | |
| Touch panel switch does not function. | 1. Proceed to "Touch Panel Switch does not Function" | Refer to Touch Panel Switch does not Function |
| 2. Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| 3. Multi-display power source circuit | Refer to Multi-display Power Source Circuit | |
| 4. Multi-display | Refer to REMOVAL | |
| Navigation screen is not displayed. | 1. Proceed to "Display Signal Circuit between Navigation ECU and Multi-display" | Refer to Display Signal Circuit between Navigation ECU and Multi-display |
| 2. Map disc | - | |
| 3. Navigation ECU | Refer to REMOVAL | |
| 4. Multi-display | Refer to REMOVAL | |
| Navigation screen flicker or color distortion. | 1. Proceed to "Screen Flicker or Color Distortion" | Refer to Screen Flicker or Color Distortion |
| 2. Proceed to "Display Signal Circuit between Navigation ECU and Multi-display" | Refer to Display Signal Circuit between Navigation ECU and Multi-display | |
| 3. Navigation ECU | Refer to REMOVAL | |
| 4. Multi-display | Refer to REMOVAL | |
| DVD image cannot be displayed on multi-display. (Parking brake is on.) (*1) | 1. Proceed to "Display Signal Circuit between Multi-display and Radio Receiver" | Refer to Display Signal Circuit between Multi-display and Radio Receiver |
| 2. Parking brake switch circuit | Refer to Parking Brake Switch Circuit | |
| 3. Radio Receiver | Refer to REMOVAL | |
| 4. 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 |
*1: for Radio receiver with built-in DVD changer models.
NAVIGATION FUNCTION:
| Symptom | Suspected Area | See page |
|---|---|---|
| Map disc cannot be inserted. | 1. Proceed to "Map Disc cannot be Inserted" | Refer to Map Disc cannot be Inserted |
| 2. Navigation ECU power source circuit | Refer to Navigation ECU Power Source Circuit | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Map disc cannot be ejected. | 1. Proceed to "Map Disc cannot be Ejected" | Refer to Map Disc cannot be Ejected |
| 2. Navigation ECU power source circuit | Refer to Navigation ECU Power Source Circuit | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Vehicle position mark deviates greatly. | 1. Proceed to "Vehicle Position Mark Deviates Greatly" | Refer to Vehicle Position Mark Deviates Greatly |
| 2. GPS antenna | Refer to REMOVAL | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Cursor or map rotates when vehicle is stopped. | 1. Proceed to "Cursor or Map Rotates when Vehicle is Stopped" | Refer to Cursor or Map Rotates when Vehicle Stopped |
| 2. Navigation ECU | Refer to REMOVAL | |
| Vehicle position mark is not updated. | 1. Proceed to "Vehicle Position Mark is not Updated" | Refer to Vehicle Position Mark is not Updated |
| 2. Map disc | - | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Current position display does not appear. | 1. Proceed to "Current Position Display does not Appear" | Refer to Current Position Display does not Appear |
| 2. Map disc | - | |
| 3. GPS antenna | Refer to REMOVAL | |
| 4. Navigation ECU | Refer to REMOVAL | |
| GPS Mark is not displayed. | 1. Proceed to "GPS Mark is not Displayed" | Refer to GPS Mark is not Displayed |
| 2. GPS antenna | Refer to REMOVAL | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Voice guidance does not function. | 1. Proceed to "Voice Guidance does not Function" | Refer to Voice Guidance does not Function |
| 2. Navigation voice circuit | Refer to Navigation Voice Circuit | |
| 3. Map disc | - | |
| 4. Navigation ECU | Refer to REMOVAL | |
| 5. Stereo component amplifier | Refer to REMOVAL | |
| Map display incomplete. | 1. Proceed to "Map Display Incomplete" | Refer to Map Display Incomplete |
| 2. Map disc | - | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Route cannot be calculated. | 1. Proceed to "Route cannot be Calculated" | Refer to Route cannot be Calculated |
| 2. Map disc | - | |
| 3. Navigation ECU | Refer to REMOVAL | |
| Voice recognition difficulty. | 1. Proceed to "Voice Recognition Difficulty" | Refer to Voice Recognition Difficulty |
| 2. Navigation ECU | Refer to REMOVAL | |
| Voice is not recognized. | 1. Proceed to "Voice is not Recognized" | Refer to Voice is not Recognized |
| 2. Proceed to "Microphone circuit between Overhead J/B and Multi-display" | Refer to Microphone Circuit between Overhead J/B and Multi-display | |
| 3. Proceed to "Microphone circuit between Multi-display and Navigation ECU" | Refer to Microphone Circuit between Multi-display and Navigation ECU | |
| 4. Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| 5. Microphone | Refer to REMOVAL | |
| 6. 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 page |
|---|---|---|
| The system cannot be operated by the steering pad switch. | 1. Steering pad switch circuit | Refer to Steering Pad Switch Circuit |
| 2. Radio receiver | Refer to REMOVAL | |
| Illumination for steering pad switch does not come on with tail switch on. | 1. Illumination circuit | Refer to Illumination Circuit |
| 2. Radio receiver | Refer to REMOVAL |
"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" | Refer to Cellular Phone Registration Failure, Phone Directory Transfer Failure |
| Cellular phone cannot send/receive. | 1. Proceed to "Cellular Phone cannot Send/Receive" | Refer to Cellular Phone cannot Send/Receive |
| 2. Steering pad switch circuit | Refer to Steering Pad Switch Circuit | |
| 3. 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. | 1.Proceed to "The Other Caller's Voice cannot be Hear, is too Quiet, or Distorted" | Refer to The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted |
| 2. Multi-display | Refer to REMOVAL | |
| The other caller cannot hear your voice, or your voice is too quiet or distorted. | 1. Proceed to "The Other Caller cannot Hear 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 |
| 2. Proceed to "Microphone circuit between Overhead J/B and Multi-display" | Refer to Microphone Circuit between Overhead J/B and Multi-display | |
| 3. Microphone | Refer to REMOVAL | |
| 4. Multi-display | Refer to REMOVAL |