Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Before inspecting the suspected areas listed in the table below, check the fuses and relays.
- Before inspecting the suspected areas listed in the table below, check for DTCs.
- Methods used to verify the cause of the problem are listed in order of probability in the suspected area column.
Audio Function:
PROBLEM SYMPTOMS TABLE - AUDIO FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Pressing power switch does not turn on system. | Proceed to "Pressing Power Switch does not Turn on System" | PRESSING POWER SWITCH DOES NOT TURN ON SYSTEM |
| Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT | |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Panel switch does not function. | Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| AVC-LAN circuit | AVC-LAN CIRCUIT | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| No sound can be heard from speakers. (Audio is mute.) (for separate type amplifier system) | Radio receiver power source circuit | RADIO RECEIVER 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 (Independent Amplifier) | SPEAKER CIRCUIT (INDEPENDENT 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 (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| No sound can be heard from speakers. (Audio is mute.) (for built-in type amplifier system) | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "No Sound can be Heard from Speakers" | NO SOUND CAN BE HEARD FROM SPEAKERS | |
| Speaker circuit (Built-in Amplifier) | SPEAKER CIRCUIT (BUILT-IN AMPLIFIER) | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Sound quality is bad in all modes. (Volume is too low.) (for separate type amplifier system) | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) |
| Speaker circuit (Independent Amplifier) | SPEAKER CIRCUIT (INDEPENDENT AMPLIFIER) | |
| 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 (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Sound quality is bad in all modes. (Volume is too low.) (for built-in type amplifier system) | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) |
| Speaker circuit (Built-in Amplifier) | SPEAKER CIRCUIT (BUILT-IN AMPLIFIER) | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| ASL does not function, (for separate type amplifier system) | Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter" | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN STEREO COMPONENT AMPLIFIER AND COMBINATION METER |
| ASL does not function, (for built-in type amplifier system) | Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter" | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN RADIO RECEIVER 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 (for Column Shift Type) | STEREO JACK ADAPTER ASSEMBLY (FOR COLUMN SHIFT TYPE) | |
| Stereo jack adapter (for Floor Shift Type) | STEREO JACK ADAPTER ASSEMBLY (FOR FLOOR SHIFT TYPE) | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Abnormal noise occurs, (for separate type amplifier system) | Proceed to "Noise occurs" | NOISE OCCURS |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Abnormal noise occurs, (for built-in type amplifier system) | Proceed to "Noise occurs" | NOISE OCCURS |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received (Poor Reception)" | RADIO BROADCAST CANNOT BE RECEIVED (BAD RECEPTION) |
| CD cannot be inserted / played or CD is ejected right after insertion. | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion" | CD CANNOT BE INSERTED / PLAYED OR CD IS EJECTED RIGHT AFTER INSERTION | |
| CD cannot be ejected. | Radio receiver power source circuit | RADIO RECEIVER POWER SOURCE CIRCUIT |
| Proceed to "CD cannot be Ejected" | CD CANNOT BE EJECTED | |
| 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 sound skips. | Proceed to "CD Sound Skips" | CD SOUND SKIPS |
| Radio receiver cannot be illuminated at night. | Illumination circuit | ILLUMINATION CIRCUIT |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) |
Steering Pad Switch Function:
PROBLEM SYMPTOMS TABLE - STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Audio system cannot be operated with steering pad switch. | Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Steering pad switch cannot be illuminated at night. | Illumination circuit | ILLUMINATION CIRCUIT |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) |
"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. | Proceed to "Cellular Phone cannot Send / Receive" | CELLULAR PHONE CANNOT SEND / RECEIVE |
| Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| 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 |
| Proceed to "Cellular Phone Voice Circuit between Radio Receiver and Stereo Component Amplifier" | CELLULAR PHONE VOICE CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| Stereo component amplifier | STEREO COMPONENT AMPLIFIER | |
| 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 |
| Proceed to "Microphone Circuit between Microphone and Radio Receiver" | MICROPHONE CIRCUIT BETWEEN MICROPHONE AND RADIO RECEIVER | |
| Roof console box assembly (Built-in microphone) | REMOVAL | |
| Radio receiver (for Column Shift Type) | RADIO RECEIVER (FOR COLUMN SHIFT TYPE) | |
| Radio receiver (for Floor Shift Type) | RADIO RECEIVER (FOR FLOOR SHIFT TYPE) | |
| HINT: *: w/ Built-in "Bluetooth" Receiver Antenna |
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