2006 Toyota PriusFACTORY OEM SERVICE PROCEDURE

Problem Symptoms Table

WARNING: This page is about a different car, the 2006 Toyota Matrix. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Inspect the "Fuse" and "Relay" before confirming the suspected area as shown in the table below.

RADIO RECEIVER 

RADIO RECEIVER PROBLEM SYMPTOM

Symptom Suspected area See example
Pressing power switch does not start system. 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. Radio receiver RADIO RECEIVER 
Radio receiver cannot be dimmed in night time. 1. Illumination circuit ILLUMINATION CIRCUIT 
2. Radio receiver RADIO RECEIVER 
No sound can be heard. (Separate type amplifier) 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. Stereo component amplifier power source circuit STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT 
3. Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER 
4. Speaker circuit SPEAKER CIRCUIT 
5. AVC-LAN circuit AVC-LAN CIRCUIT 
6. Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier MUTE SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER 
7. Stereo component amplifier STEREO COMPONENT AMPLIFIER 
8. Radio receiver RADIO RECEIVER 
No sound can be heard. (Built-in type amplifier) 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. Speaker circuit SPEAKER CIRCUIT 
3. Radio receiver RADIO RECEIVER 
Sound quality is bad in all modes (volume is too low). (Separate type amplifier) 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. Stereo component amplifier power source circuit STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT 
3. Speaker circuit SPEAKER CIRCUIT 
4. Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier SOUND SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND STEREO COMPONENT AMPLIFIER 
5. Sound quality is bad in all modes SOUND QUALITY IS BAD IN ALL MODES 
Sound quality is bad in all modes (volume is too low). (Built-in type amplifier) 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. Speaker circuit SPEAKER CIRCUIT 
3. Sound quality is bad in all modes SOUND QUALITY IS BAD IN ALL MODES 
Noise occurs. (Separate type amplifier) 1. Noise occurs NOISE OCCURS 
2. Stereo component amplifier STEREO COMPONENT AMPLIFIER 
3. Radio receiver RADIO RECEIVER 
Noise occurs. (Built-in type amplifier) 1. Noise occurs NOISE OCCURS 
2. Radio receiver RADIO RECEIVER 
Radio broadcast cannot be received (bad reception). Radio Broadcast cannot be Received or Poor Reception 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 RADIO RECEIVER POWER SOURCE CIRCUIT 
2. 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. 1. Radio receiver power source circuit RADIO RECEIVER POWER SOURCE CIRCUIT 
2. CD cannot be ejected CD CANNOT BE EJECTED 
Sound quality is bad only when playing CD (volume is too low). Sound Quality is Bad Only when CD is Played (Volume is Too Low) SOUND QUALITY IS BAD IN ALL MODES 
CD sound skips. CD sound Skips CD SOUND SKIPS 
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.