Speakers - Reduced Volume
IMPORTANT:
The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
.
Without RPO UQA
- Speaker output circuit high resistance-Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs .
- Defective speaker-Replace the appropriate speaker. Refer to Speaker Replacement Reference .
With RPO UQA (Bose)
- Speaker output circuit high resistance-Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs .
- Front low level audio circuit open-Test the appropriate low level audio circuit for an open. Refer to Circuit Testing and Wiring Repairs .
- Defective speaker-Replace the appropriate speaker. Refer to Speaker Replacement Reference .
With RPO U2K
- Audio common circuit open-Test the audio common circuit for an open. Refer to Circuit Testing and Wiring Repairs .
- Replace the digital radio receiver-Refer to Control Module References .