Problem Symptoms Table
HINT:
Use the table 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.
Audio function
PROBLEM SYMPTOMS TABLE - AUDIO FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing power switch does not turn on system. | 1. Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| 2. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| 3. AVC-LAN circuit | AVC-LAN CIRCUIT | |
| 4. Radio receiver | - | |
| 5. Multi-display | - | |
| Panel switch does not function. | 1. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| 2. AVC-LAN circuit | AVC-LAN CIRCUIT | |
| 3. Radio receiver | - | |
| No sound can be heard from speakers (audio is mute). | 1. AVC-LAN circuit | AVC-LAN CIRCUIT |
| 2. Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT | |
| 3. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| 4. Proceed to "No sound can be Heard from Speakers" | NO SOUND CAN BE HEARD FROM SPEAKERS | |
| 5. Stereo component amplifier power source circuit | STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT | |
| 6. Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| 7. Speaker circuit | SPEAKER CIRCUIT | |
| 8. Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier" | MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| 9. Stereo component amplifier | - | |
| 10. Radio receiver | - | |
| 11. Multi-display | - | |
| Only DVD sound cannot be heard or sound quality is bad. | 1. Proceed to "Sound Signal Circuit between Radio receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER |
| 2. Stereo component amplifier | - | |
| 3. Radio receiver | - | |
| Sound quality is bad in all modes (volume is too low). | 1. Proceed to "Poor Sound Quality in All Modes (Low Volume)" | POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) |
| 2. Speaker circuit | SPEAKER CIRCUIT | |
| 3. Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier" | SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| 4. Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier" | MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| 5. Stereo component amplifier | - | |
| 6. 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 |
| Noise occurs. | 1. Proceed to "Noise Occurs" | NOISE OCCURS |
| 2. Stereo component amplifier | - | |
| 3. 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) |
| Cassette tape cannot be inserted or played. | Proceed to "Cassette Tape cannot be Inserted or Played" | CASSETTE TAPE CANNOT BE INSERTED OR PLAYED |
| Cassette tape cannot be ejected. | Proceed to "Cassette Tape cannot be Ejected" | CASSETTE TAPE CANNOT BE EJECTED |
| Sound quality is bad only when playing tape. | Proceed to "Sound Quality is Bad Only when Playing Tape" | SOUND QUALITY IS BAD ONLY WHEN PLAYING TAPE |
| Tape is tangled due to incorrect tape speed or auto-reverse malfunction. | Proceed to "Tape is Tangled due to Incorrect Tape Speed or Auto-Reverse Malfunction" | TAPE IS TANGLED DUE TO INCORRECT TAPE SPEED OR AUTO-REVERSE MALFUNCTION |
| Disc cannot be inserted or is ejected right after insertion. | 1. Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| 2. Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | DISC CANNOT BE INSERTED OR IS EJECTED RIGHT AFTER INSERTION | |
| 3. Radio receiver | - | |
| Disc cannot be ejected. | 1. Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| 2. Proceed to "Disc cannot be ejected" | DISC CANNOT BE EJECTED | |
| 3. 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. | 1. Proceed to "CD / DVD Sound Skips" | CD / DVD SOUND SKIPS |
| 2. Radio receiver | - | |
| Illumination for radio receiver does not come on with light control switch on. | 1. Illumination circuit | ILLUMINATION CIRCUIT |
| 2. Radio receiver | - |
Display function
PROBLEM SYMPTOMS TABLE - DISPLAY FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing engine switch does not turn on system. | 1. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT |
| 2. AVC-LAN circuit | AVC-LAN CIRCUIT | |
| 3. Multi-display | - | |
| Black screen (no image appears on audio screen). | 1. Proceed to "No Image Appears on Multi-display" | NO IMAGE APPEARS ON MULTI-DISPLAY |
| 2. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| 3. Illumination circuit | ILLUMINATION CIRCUIT | |
| 4. AVC-LAN circuit | AVC-LAN CIRCUIT | |
| 5. Multi-display | - | |
| Illumination for panel switch does not come on with light control switch on. | 1. Proceed to "Illumination for Panel Switch does not Come on with Light Control Switch ON" | ILLUMINATION FOR PANEL SWITCH DOES NOT COME ON WITH TAIL SWITCH ON |
| 2. Illumination circuit | ILLUMINATION CIRCUIT | |
| 3. Multi-display | - | |
| Display does not dim (night screen) when light control switch is turned on. | 1. Proceed to "Display does not Dim when Light Control Switch is Turned ON" | DISPLAY DOES NOT DIM WHEN LIGHT CONTROL SWITCH IS TURNED ON |
| 2. Illumination circuit | ILLUMINATION CIRCUIT | |
| 3. Multi-display | - | |
| Power does not turn off (screen remains on). | 1. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT |
| 2. Multi-display | - | |
| Panel switches do not function. | 1. Proceed to "Panel Switches do not Function" | PANEL SWITCHES DO NOT FUNCTION |
| 2. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| 3. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| 4. Multi-display | - | |
| Touch panel switch does not function. | 1. Proceed to "Touch Panel Switch does not Function" | TOUCH PANEL SWITCH DOES NOT FUNCTION |
| 2. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| 3. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |
| 4. Multi-display | - | |
| 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" | DISPLAY SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY AND RADIO RECEIVER |
| 2. Parking brake switch circuit | PARKING BRAKE SWITCH CIRCUIT | |
| 3. Radio receiver | - | |
| 4. Multi-display | - |
Steering pad switch function
PROBLEM SYMPTOMS TABLE - STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| System cannot be operated by steering pad switch. | 1. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| 2. Radio receiver | - | |
| Illumination for steering pad switch does not come on with light control switch on. | 1. Illumination circuit | ILLUMINATION CIRCUIT |
| 2. Steering pad switch | - |
Bluetooth function
PROBLEM SYMPTOMS TABLE - BLUETOOTH FUNCTION
| 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. | 1. Proceed to "Cellular Phone cannot Send / Receive" | CELLULAR PHONE CANNOT SEND / RECEIVE |
| 2. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| 3. Radio receiver | - | |
| Cannot call in a certain place. | Proceed to "Cannot Call in a Certain Place" | CANNOT CALL IN A CERTAIN PLACE |
| The other callers voice cannot be heard, is too quiet, or distorted. | 1. Proceed to "The Other Callers Voice cannot be Heard, is too Quiet, or Distorted" | THE OTHER CALLER'S VOICE CANNOT BE HEARD, IS TOO QUIET, OR DISTORTED |
| 2. Multi-display | - | |
| 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." | THE OTHER CALLER CANNOT HEAR YOUR VOICE, OR YOUR VOICE IS TOO QUIET OR DISTORTED |
| 2. Microphone circuit between overhead J/B and multi-display | MICROPHONE CIRCUIT BETWEEN OVERHEAD J/B AND MULTI-DISPLAY | |
| 3. Microphone | - | |
| 4. Microphone amplifier | - | |
| 5. Multi-display | - |