Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. 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.
- Problem symptoms may occur if the electric power control system's functions malfunction. Follow the HOW TO PROCEED WITH TROUBLESHOOTING procedures.
Audio function
SYMPTOM CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing power switch does not turn on system. | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Radio receiver | RADIO RECEIVER | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Panel switch does not function. | Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Radio receiver | RADIO RECEIVER | |
| No sound can be heard from speakers (audio is mute). | AVC-LAN circuit | AVC-LAN CIRCUIT |
| Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT | |
| Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| Proceed to "No sound can be Heard from Speakers" | NO SOUND CAN BE HEARD FROM SPEAKERS | |
| Stereo component amplifier power source circuit | STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| Speaker circuit | SPEAKER CIRCUIT | |
| Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier" | MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| Radio receiver | RADIO RECEIVER | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Only DVD sound cannot be heard or sound quality is bad. | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| Radio receiver | RADIO RECEIVER | |
| Sound quality is bad in all modes (volume is too low). | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) |
| Speaker circuit | SPEAKER CIRCUIT | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier" | MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| Radio receiver | RADIO RECEIVER | |
| ASL does not function. | Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Component Meter" | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN STEREO COMPONENT AMPLIFIER AND COMBINATION METER |
| External device sound cannot be heard or sound quality is bad (Stereo jack is used). | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO JACK ADAPTER | |
| Stereo jack adapter | STEREO JACK ADAPTER ASSEMBLY | |
| Radio receiver | RADIO RECEIVER | |
| Noise occurs. | Proceed to "Noise Occurs" | NOISE OCCURS |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| Radio receiver | RADIO RECEIVER | |
| Radio broadcast cannot be received (poor reception). | Proceed to "Radio Broadcast cannot be Received (Poor reception)" | RADIO BROADCAST CANNOT BE RECEIVED (BAD RECEPTION) |
| Disc cannot be inserted or is ejected right after insertion. | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | DISC CANNOT BE INSERTED OR IS EJECTED RIGHT AFTER INSERTION | |
| Radio receiver | RADIO RECEIVER | |
| Disc cannot be ejected. | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "Disc cannot be Ejected" | DISC CANNOT BE EJECTED | |
| Radio receiver | RADIO RECEIVER | |
| Sound quality is bad only when CD is played (volume is too low). | Proceed to "Sound Quality is Bad Only when CD is Played (Volume is Too Low)" | SOUND QUALITY IS BAD ONLY WHEN CD IS PLAYED (VOLUME IS TOO LOW) |
| CD/DVD sound skips. | Proceed to "CD/DVD Sound Skips" | CD/DVD SOUND SKIPS |
| Radio receiver | RADIO RECEIVER | |
| Illumination for radio receiver does not come on with light control switch on. | Illumination circuit | ILLUMINATION CIRCUIT |
| Radio receiver | RADIO RECEIVER | |
| Sound cannot be heard from sound library*1. | Navigation System (for HDD) | PROBLEM SYMPTOMS TABLE |
| Rear seat area disc player sounds cannot be heard from speakers. | Sound Signal Circuit between Multi-display Controller and Disc Player Controller | SOUND SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY CONTROLLER AND DISC PLAYER CONTROLLER |
| Sound Signal Circuit between Radio Receiver and Multi-display Controller | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND MULTI-DISPLAY CONTROLLER | |
| Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| HINT: *1: w/ Navigation system (for HDD) |
||
Display function
SYMPTOM CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing power switch does not turn on system. | Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Back screen (no image appears on audio screen). | Proceed to "No Image Appears on Multi-display" | NO IMAGE APPEARS ON MULTI-DISPLAY |
| Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| Illumination circuit | ILLUMINATION CIRCUIT | |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| 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" | ILLUMINATION FOR PANEL SWITCH DOES NOT COME ON WITH TAIL SWITCH ON |
| Illumination circuit | ILLUMINATION CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Display does not dim (night screen) with light control switch turned on. | Proceed to "Display does not DIM when Light Control Switch is Turned ON" | DISPLAY DOES NOT DIM WHEN LIGHT CONTROL SWITCH IS TURNED ON |
| Dimmer signal circuit | DIMMER SIGNAL CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Power does not turn off (screen remains on). | Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Panel switches do not function. | Proceed to "Panel Switches do not Function" | PANEL SWITCHES DO NOT FUNCTION |
| Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Touch panel switch does not function. | Proceed to "Touch Panel Switch does not Function" | TOUCH PANEL SWITCH DOES NOT FUNCTION |
| Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| DVD image cannot be displayed on multi-display (parking brake is on)*2. | Proceed to "Display Signal Circuit between Multi-display and Radio Receiver" | DISPLAY SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY AND RADIO RECEIVER |
| Parking brake switch circuit | PARKING BRAKE SWITCH CIRCUIT | |
| Radio receiver | RADIO RECEIVER | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| Coaxial cable | - | |
| HINT: *2: for DVD changer models |
||
Steering pad switch function
SYMPTOM CHART
| Symptom | Suspected Area | See |
|---|---|---|
| System cannot be operated by steering pad switch. | Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| Radio receiver | RADIO RECEIVER | |
| Illumination for steering pad switch does not come on with light control switch on. | Illumination circuit | ILLUMINATION CIRCUIT |
| Steering pad switch | STEERING PAD SWITCH |
Rear controller function
SYMPTOM CHART
| Symptom | Suspected Area | See |
|---|---|---|
| The system cannot be operated by rear controller | Rear seat control switch power source circuit | REAR SEAT CONTROL SWITCH POWER SOURCE CIRCUIT |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Radio receiver | RADIO RECEIVER |
Bluetooth function
SYMPTOM CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Cellular phone registration failure, phone directory transfer failure. | Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure" | CELLULAR PHONE REGISTRATION FAILURE, PHONE DIRECTORY TRANSFER FAILURE |
| Cellular phone cannot send/receive. | Proceed to "Cellular Phone cannot Send/Receive" | CELLULAR PHONE CANNOT SEND/RECEIVE |
| Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| Radio receiver | RADIO RECEIVER | |
| Cannot call in a certain place. | Proceed to "Cannot Call in a Certain Place" | 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" | THE OTHER CALLER'S VOICE CANNOT BE HEARD, IS TOO QUIET, OR DISTORTED |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) | |
| 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" | THE OTHER CALLER CANNOT HEAR YOUR VOICE, OR YOUR VOICE IS TOO QUIET OR DISTORTED |
| Microphone circuit between overhead J/B and multi-display | MICROPHONE CIRCUIT BETWEEN OVERHEAD J/B AND MULTI-DISPLAY | |
| Microphone | REMOVAL | |
| Microphone amplifier | REMOVAL | |
| Multi-display | MULTI-DISPLAY (W/O NAVIGATION SYSTEM) |