Problem Symptoms Table
WARNING: This page is about a different car, the 2009 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
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.
Audio Function
AUDIO FUNCTION PROBLEM SYMPTOMS CHARTSymptom Suspected Area Refer to Pressing power switch does not turn on system. 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 assembly REMOVAL Panel switch does not function. Steering pad switch circuit STEERING PAD SWITCH CIRCUIT AVC-LAN circuit AVC-LAN CIRCUIT Radio receiver assembly REMOVAL No sound can be heard from speakers (Audio is mute.) (for Double Cab with 7 speakers). Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 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 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) Mute signal circuit between radio receiver and stereo component amplifier MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER Stereo component amplifier assembly REMOVAL Radio receiver assembly REMOVAL No sound can be heard from speakers (Audio is mute.) (for except Double Cab with 7 speakers). Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT No sound can be heard from speakers NO SOUND CAN BE HEARD FROM SPEAKERS Speaker circuit (Built-in amplifier) SPEAKER CIRCUIT (BUILT-IN AMPLIFIER) Woofer speaker power source circuit WOOFER SPEAKER POWER SOURCE CIRCUIT Radio receiver assembly REMOVAL Sound quality is bad in all modes (Volume is too low.) (for Double Cab with 7 speakers). Poor sound quality in all modes (Low volume) POOR SOUND QUALITY IN ALL MODES (LOW VOLUME) Speaker circuit (Independent amplifier) SPEAKER CIRCUIT (INDEPENDENT AMPLIFIER) Sound signal circuit between radio receiver and stereo component amplifier SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER Mute signal circuit between radio receiver and stereo component amplifier MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER Stereo component amplifier assembly REMOVAL Radio receiver assembly REMOVAL Sound quality is bad in all modes (Volume is too low.) (for except Double Cab with 7 speakers). 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) Woofer speaker power source circuit WOOFER SPEAKER POWER SOURCE CIRCUIT Radio receiver assembly REMOVAL ASL does not function (for Double Cab with 7 speakers). 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 except Double Cab with 7 speakers). 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 Sound signal circuit between radio receiver and stereo jack adapter SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO JACK ADAPTER Stereo jack adapter assembly REMOVAL Radio receiver assembly REMOVAL Abnormal noise occurs (for Double Cab with 7 speakers). Noise occurs NOISE OCCURS Stereo component amplifier assembly REMOVAL Radio receiver assembly REMOVAL Abnormal noise occurs (for except Double Cab with 7 speakers). Noise occurs NOISE OCCURS Radio receiver assembly REMOVAL Radio broadcast cannot be received or poor reception. Radio broadcast cannot be received (Bad 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 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 CD cannot be ejected CD CANNOT BE EJECTED 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) SOUND QUALITY IS BAD ONLY WHEN CD IS PLAYED (VOLUME IS TOO LOW) CD sound skips. CD sound skips CD SOUND SKIPS Radio receiver cannot be illuminated at night. Illumination circuit ILLUMINATION CIRCUIT Radio receiver assembly REMOVAL Woofer system cannot be operate with woofer speaker switch (for Access CAB with woofer speaker) Woofer speaker power source circuit WOOFER SPEAKER POWER SOURCE CIRCUIT Speaker circuit (Built-in amplifier) SPEAKER CIRCUIT (BUILT-IN AMPLIFIER) No. 1 speaker assembly with box AMPLIFIER BOX SPEAKER ASSEMBLY (FOR ACCESS CAB) Steering Pad Switch Function*1
STEERING PAD SWITCH FUNCTION PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Audio system cannot be operated with steering pad switch. | Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| Radio receiver assembly | REMOVAL | |
| Steering pad switch cannot be illuminated at night. | Illumination circuit | ILLUMINATION CIRCUIT |
| Radio receiver assembly | REMOVAL |
"Bluetooth" Function*2
BLUETOOTH FUNCTION PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Cellular phone registration failure, phone directory transfer failure. | Cellular phone registration failure, phone directory transfer failure | CELLULAR PHONE REGISTRATION FAILURE, PHONE DIRECTORY TRANSFER FAILURE |
| Cellular phone cannot send/receive. | Cellular phone cannot send/receive | CELLULAR PHONE CANNOT SEND/RECEIVE |
| Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| Radio receiver assembly | REMOVAL | |
| The other caller's voice cannot be heard, is too quiet, or distorted. | The other caller's voice cannot be heard, or is too quiet or distorted | THE OTHER CALLER'S VOICE CANNOT BE HEARD, IS TOO QUIET, OR DISTORTED |
| Radio receiver assembly | REMOVAL | |
| Stereo component amplifier assembly | REMOVAL | |
| 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 | THE OTHER CALLER CANNOT HEAR YOUR VOICE, OR YOUR VOICE IS TOO QUIET OR DISTORTED |
| Microphone circuit between microphone and radio receiver | MICROPHONE CIRCUIT BETWEEN MICROPHONE AND RADIO RECEIVER | |
| Inner Rear View Mirror assembly | REMOVAL | |
| Radio receiver assembly | REMOVAL | |
| *1: w/ Steering Pad Switch Assembly *2: for Double Cab with 7 Speakers |
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