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 |
|---|---|---|
| Black screen (No image appears on navigation/audio screen.) | Proceed to "Black Screen" | Refer to Black Screen |
| Proceed to "Illumination Circuit" | Refer to Illumination Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Display does not dim (does not change to 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 |
| Proceed to "Illumination Circuit" | Refer to Illumination Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Power does not turn off (Screen remains on). | Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit |
| Navigation receiver assembly | Refer to REMOVAL | |
| Display panel does not open, tilt, or tilts improperly. | Proceed to "Display Panel does not Open, Tilt, or Tilts Improperly" | Refer to Display Panel does not Open, Tilt or Tilts Improperly |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Screen is distorted. | Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit |
| Navigation receiver assembly | Refer to REMOVAL | |
| Screen flicker or color is distorted. | Proceed to "Screen Flicker or Color Distortion" | Refer to Screen Flicker or Color Distortion |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| DVD image cannot be displayed on front screen. (Parking brake is on.) | Proceed to "Parking Brake Switch Circuit" | Refer to Parking Brake Switch Circuit |
| Navigation receiver assembly | Refer to REMOVAL | |
| Reverse signal does not change in vehicle signal check mode. | Proceed to "Reverse Signal Circuit" | Refer to Reverse Signal Circuit |
PANEL SWITCH AND TOUCH SWITCH FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Illumination for panel switches 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 |
| Proceed to "Illumination Circuit" | Refer to Illumination Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Panel switches do not function. | Proceed to "Panel Switches do not Function" | Refer to Panel Switches do not Function |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | 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 |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | Refer to REMOVAL |
STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| The system cannot be operated by steering pad switch. | Proceed to "Steering Pad Switch Circuit" | Refer to Steering Pad Switch Circuit |
| Navigation receiver assembly | Refer to REMOVAL | |
| Illumination for steering pad switch does not come on with tail switch on. | Proceed to "Illumination Circuit" | Refer to Illumination Circuit |
| Navigation receiver assembly | Refer to REMOVAL |
GENERAL AUDIO FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing power 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 |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| No sound can be heard from speakers (Audio is mute). | Proceed to "No Sound can be Heard from Speakers" | Refer to No Sound can be Heard from Speakers |
| Proceed to "Speaker circuit" | Refer to Speaker Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Abnormal noise occurs. | Proceed to "Noise Occurs" | Refer to Noise Occurs |
| Poor sound quality in all modes (Low volume). | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | Refer to Poor Sound Quality in All Modes (Low Volume) |
| Proceed to "Speaker circuit" | Refer to Speaker Circuit | |
| Proceed to "Radio Receiver Power Source Circuit" | Refer to Radio Receiver Power Source Circuit | |
| Navigation receiver assembly | Refer to REMOVAL | |
| ASL does not function. | Check that the ASL function is on | - |
| Navigation receiver assembly | Refer to REMOVAL |
FM OR AM RADIO FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" | Refer to Radio Broadcast cannot be Received or Poor Reception |
CD OR DVD PLAYER FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Disc cannot be inserted/played or disc is ejected right after insertion. | Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | Refer to Disc cannot be Inserted or is Ejected Right After Insertion |
| Disc cannot be ejected. | Proceed to "Disc cannot be Ejected" | Refer to Disc cannot be Ejected |
| CD/DVD sound skips. | Proceed to "CD/DVD Sound Skips" | Refer to CD/DVD Sound Skips |
AUX FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| External device sound cannot be heard or sound quality is bad. | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | Refer to Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter |
| No. 1 stereo jack adapter assembly | Refer to REMOVAL | |
| Navigation receiver assembly | Refer to REMOVAL | |
| "AUX" is not displayed on system check mode screen. | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | Refer to Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter |
| Navigation receiver assembly | Refer to REMOVAL |
"BLUETOOTH" HANDS-FREE FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Bluetooth is inoperative. | Proceed to "Microphone Circuit between Microphone and Radio Receiver" | Refer to Microphone Circuit between Microphone and Radio Receiver |
| Telephone microphone assembly | Refer to REMOVAL | |
| Navigation receiver assembly | Refer to REMOVAL | |
| 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 |
| Proceed to "Steering Pad Switch Circuit" | Refer to Steering Pad Switch Circuit | |
| Navigation receiver assembly | 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 callers voice cannot be heard, is too quiet, or distorted. | Proceed to "The Other Caller's Voice cannot be Heard, is Quiet, or Distorted" | Refer to The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted |
| Navigation receiver assembly | Refer to REMOVAL | |
| 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" | Refer to The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted |
| Proceed to "Microphone Circuit between Microphone and Radio Receiver" | Refer to Microphone Circuit between Microphone and Radio Receiver | |
| Telephone microphone assembly | Refer to REMOVAL | |
| Navigation receiver assembly | Refer to REMOVAL | |
| Voice guidance does not function. | Proceed to "Voice Guidance does not Function" | Refer to Voice Guidance does not Function |
| Proceed to "Speaker Circuit" | Refer to Speaker Circuit | |
| Program disc | - | |
| Navigation receiver assembly | Refer to REMOVAL | |
| "MIC" is not displayed on system check mode screen. | Proceed to "Microphone Circuit between Microphone and Radio Receiver" | Refer to Microphone Circuit between Microphone and Radio Receiver |
| Navigation receiver assembly | Refer to REMOVAL |