Diesel Data: Automotive Repair

Symptom Troubleshooting




Symptom Troubleshooting: Audio system sound is weak or distorted (display is normal)

Audio system sound is weak or distorted (display is normal)

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

- Check for aftermarket accessories plugged into the vehicle accessory power sockets (including cell phones and cell phone chargers).

1. Turn on the audio unit and check for sound in each mode (AM, FM, and CD).

Is there sound from the speakers, and is the sound quality normal in each mode?
YES - Intermittent failure. The system is OK at this time. Check for loose connections at the audio unit, and each speaker.

NO - Speakers all work, sound quality is poor.

- If the sound is poor only with AM or FM, go to poor AM or FM radio reception or interference. Symptom Troubleshooting

- If sound is poor in all modes, go to sound quality diagnosis. Sound Quality Diagnosis - Left/Right Channel ID