Diesel Data: Automotive Repair

Volume Is Too High or Too Low When Driving at Freeway Speeds




Symptom Troubleshooting: Volume is too high or too low when driving at freeway speeds

Volume is too high or too low when driving at freeway speeds

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

1. Test-drive the vehicle at highway speeds, and monitor volume level.

Is the volume level too high, or too low?
YES - Go to step 2.

NO - Intermittent failure, the system is OK at this time.


2. Change SVC mode setting in sound adjustment set-up to Mid and retest.

Is the volume level still too high or too low?
YES - Substitute a known-good audio unit with navigation, Audio Unit Removal/Installation (With Navigation) without navigation, Audio Unit Removal/Installation (Without Navigation) and recheck. If the symptom/indication goes away, replace the audio unit with navigation, Audio Unit Removal/Installation (With Navigation) without navigation. Audio Unit Removal/Installation (Without Navigation)

NO - Improper SVC setting for customer's sound taste.