Tech Tips
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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Pressing PWR switch does not turn on system. | Proceed to "Pressing Power Switch does not Turn on System" | |
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Black screen (No image appears on navigation/audio screen). | Proceed to "Black Screen" | |
| Illumination circuit | ||
| Navigation receiver assembly | ||
| 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" | |
| Illumination circuit | ||
| Navigation receiver assembly | ||
| Display does not dim (Night Screen) with tail switch on. | Proceed to "Display does not Dim when Light Control Switch is Turned ON" | |
| Illumination circuit | ||
| Navigation receiver assembly | ||
| Power does not turn off (The screen remains on). | Navigation receiver assembly power source circuit | |
| Navigation receiver assembly | ||
| Panel switches do not function. | Proceed to "Panel Switches do not Function" | |
| Steering pad switch circuit | ||
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Touch panel switch does not function. | Proceed to "Touch Panel Switch does not Function" | |
| Steering pad switch circuit | ||
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Display panel does not open, tilt or tilts improperly. | Proceed to "Display Panel does not Open, Tilt or Tilts Improperly" | |
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Screen is distorted. | Navigation receiver assembly power source circuit | |
| Navigation receiver assembly | ||
| Screen flicker or color distortion. | Proceed to "Screen Flicker or Color Distortion" | |
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Navigation function switches can be operated while vehicle is driving. | Parking brake switch circuit |
| Symptom | Suspected Area | See page |
|---|---|---|
| No sound can be heard from speakers (audio is mute). | Proceed to "No Sound can be Heard from Speakers" | |
| Speaker circuit | ||
| Navigation receiver assembly | ||
| Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" | |
| CD cannot be inserted / played or CD is ejected right after insertion. | Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion" | |
| CD cannot be ejected. | Proceed to "CD cannot be Ejected" | |
| CD sound skips. | Proceed to "CD Sound Skips" | |
| Abnormal noise occurs. | Proceed to "Noise Occurs" | |
| Poor sound quality in all modes (low volume). | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | |
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| External device sound cannot be heard or sound quality is bad. (Stereo jack is used.) | Proceed to "Sound Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter" | |
| No. 1 stereo jack adapter assembly | ||
| Navigation receiver assembly | ||
| ASL does not function. | Proceed to "Vehicle Speed Signal Circuit between Navigation Receiver Assembly and Combination Meter" |
| Symptom | Suspected Area | See page |
|---|---|---|
| Map disc cannot be inserted. | Proceed to "Map Disc cannot be Inserted" | |
| Navigation receiver assembly power source circuit | ||
| Navigation receiver assembly | ||
| Map disc cannot be ejected. | Navigation receiver assembly power source circuit | |
| Navigation receiver assembly | ||
| Vehicle position mark deviates. | Proceed to "Vehicle Position Mark Deviates Greatly" | |
| Navigation antenna assembly | ||
| Navigation receiver assembly | ||
| Cursor or map rotates when vehicle is stopped. | Proceed to "Cursor or Map Rotates When Vehicle is Stopped" | |
| Navigation receiver assembly | ||
| Vehicle position mark is not updated. | Proceed to "Vehicle Position Mark is not Updated" | |
| Map disc | - | |
| Navigation receiver assembly | ||
| Current position display does not appear. | Proceed to "Current Position Display does not Appear" | |
| Map disc | - | |
| Navigation antenna assembly | ||
| Navigation receiver assembly | ||
| GPS mark is not displayed. | Proceed to "GPS Mark is not Displayed" | |
| Navigation antenna assembly | ||
| Navigation receiver assembly | ||
| Voice guidance does not function. | Proceed to "Voice Guidance does not Function" | |
| Speaker circuit | ||
| Map disc | - | |
| Navigation receiver assembly | ||
| Map display incomplete. | Proceed to "Map Display Incomplete" | |
| Map disc | - | |
| Navigation receiver assembly | ||
| Route cannot be calculated. | Proceed to "Route cannot be Calculated" | |
| Map disc | - | |
| Navigation receiver assembly | ||
| Voice recognition difficulty. | Proceed to "Voice Recognition Difficulty" | |
| Navigation receiver assembly | ||
| Voice is not recognized. | Proceed to "Voice is not Recognized" | |
| Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly" | ||
| Steering pad switch circuit | ||
| Navigation receiver assembly | ||
| Speed signal does not change in the navigation check mode. | Proceed to "Vehicle Speed Signal Circuit between Navigation Receiver Assembly and Combination Meter" | |
| Reverse signal does not change in the navigation check mode. | Reverse signal circuit | |
| Parking brake switch signal does not change in the navigation check mode. | Parking brake switch circuit | |
| RDS-TMC does not function. | Proceed to "RDS-TMC does not Function" | |
| Navigation receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| The system cannot be operated by the steering pad switch. | Steering pad switch circuit | |
| Navigation receiver assembly | ||
| Illumination for steering pad switch does not come on with TAIL switch on. | Illumination circuit | |
| Navigation receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Bluetooth inoperative. | Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly" | |
| Navigation receiver assembly | ||
| Cellular phone registration failure, phone directory transfer failure. | Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure" | |
| Cellular phone cannot send / receive. | Proceed to "Cellular Phone cannot Send / Receive" | |
| Steering pad switch circuit | ||
| Navigation receiver assembly | ||
| Cannot call in a certain place. | Proceed to "Cannot Call in a Certain Place" | |
| The other callers voice cannot be heard, is too quiet, or distorted. | Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted" | |
| Speaker circuit | ||
| Navigation receiver assembly | ||
| The 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" | |
| Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly" | ||
| Navigation receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Portable player cannot be registered. | Proceed to "Portable Player cannot be Registered" | |
| Navigation receiver 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 receiver 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 receiver 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 receiver 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 receiver assembly | ||
| Portable player does not play. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
| Navigation receiver assembly | ||
| Track information such as track number, track name and elapsed play time 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 receiver 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 receiver 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 receiver 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 receiver assembly | ||
| Portable player cannot pause, select file, fast forward, fast rewind, random play or scan. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Navigation receiver assembly | ||
| Noise occurs or sound skips when portable player plays. | Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" | |
| Navigation receiver assembly | ||
| Registered device cannot be deleted. | Proceed to "Registered Device cannot be Deleted" | |
| Navigation receiver assembly |