Problem Symptoms Table

Before inspecting the suspected areas listed in the table below, check the fuse and relay.
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:

AUDIO FUNCTION

Symptom

Suspected Area

Pressing power switch does not turn on system.

1. Proceed to "Pressing Power Switch does not Turn on System"

2. Radio receiver power source circuit

3. AVC-LAN circuit

4. Radio receiver

Panel switch does not function.

1. Steering pad switch circuit

2. AVC-LAN circuit

3. Radio receiver

No sound be heard from speakers. (Audio is mute.) (10 speaker system)

1. Radio receiver power source circuit

2. Proceed to "No Sound can be Heard from Speakers"

3. Stereo component amplifier power source circuit

4. Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier"

5. Speaker circuit

6. Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier"

7. Proceed to "Mute Signal Circuit between Radio Receiver and Television Display Assembly" (⁽¹⁾)

8. Woofer box speaker assembly (Built-in stereo component amplifier)

9. Radio receiver

No sound be heard from speakers. (Audio is mute.) (6 speaker system)

1. Radio receiver power source circuit

2. Proceed to "No Sound can be Heard from Speakers"

3. Speaker circuit

4. Proceed to "Mute Signal Circuit between Radio Receiver and Television Display Assembly" (⁽¹⁾)

5. Radio receiver

Sound quality is bad in all modes. (Volume is too low.) (10 speaker system)

1. Proceed to "Poor Sound Quality in All Modes (Low Volume)"

2. Speaker circuit.

3. Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier"

4. Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier"

5. Proceed to "Mute Signal Circuit between Radio Receiver and Television Display Assembly" (⁽¹⁾)

6. Woofer box speaker assembly (Built-in stereo component amplifier)

7. Radio receiver

Sound quality is bad in all modes. (Volume is too low.) (6 speaker system)

1. Proceed to "Poor Sound Quality in All Modes (Low Volume)"

2. Speaker circuit

3. Proceed to "Mute Signal Circuit between Radio Receiver and Television Display Assembly" (⁽¹⁾)

4. Radio receiver

ASL does not function. (10 speaker system)

Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter"

ASL does not function. (6 speaker system)

Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"

RSE sound cannot be heard or sound quality is bad. (⁽¹⁾)

1. Radio receiver power source circuit

2. Television display assembly power source circuit

3. Proceed to "Sound Signal Circuit between Radio Receiver and Television Display Assembly"

4. Proceed to "Mute Signal Circuit between Radio Receiver and Television Display Assembly"

5. Radio receiver

6. Television display assembly

External device sound cannot be heard or sound quality is bad. (Stereo jack is used.)

1. Radio receiver power source circuit

2. Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter"

3. Stereo jack adapter

4. Radio receiver

Abnormal noise occurs. (10 speaker system)

1. Proceed to "Noise occurs"

2. Woofer box speaker assembly (Built-in stereo component amplifier)

3. Radio receiver

Abnormal noise occurs. (6 speaker system)

1. Proceed to "Noise occurs"

2. Radio receiver

Radio broadcast cannot be received or poor reception.

Proceed to "Radio Broadcast cannot be Received or Poor Reception"

CD cannot be inserted/played or CD is ejected right after insertion.

1. Radio receiver power source circuit

2. Proceed to "CD cannot be Inserted/Played or CD is Ejected Right After Insertion"

CD cannot be ejected.

1. Radio receiver power source circuit

2. Proceed to "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)"

CD sound skips.

Proceed to "CD Sound Skips"

Radio receiver cannot be illuminated at night.

1. Illumination circuit

2. Radio receiver

⁽¹⁾	with Rear Seat Entertainment System

Steering Pad Switch Function:

STEERING PAD SWITCH FUNCTION

Symptom	Suspected Area
Audio system cannot be operated with steering pad switch.	1. Steering pad switch circuit
Audio system cannot be operated with steering pad switch.	2. Radio receiver
Steering pad switch cannot be illuminated at night.	1. Illumination circuit
Steering pad switch cannot be illuminated at night.	2. Radio receiver