Reduced Volume - One or More Speakers

REDUCED VOLUME - ONE OR MORE SPEAKERS

DIAGNOSTIC SYSTEM CHECK - VEHICLE
Always perform the Vehicle Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle. Initial Inspection

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.

Without RPO UQA
1. Speaker output circuit high resistance. Test the appropriate speaker output circuits for high resistance.
2. Defective speaker - Replace the appropriate speaker.

With RPO UQA (Bose)
1. Speaker output circuit high resistance. Test the appropriate speaker output circuits for high resistance.
2. Front low level audio circuit open. Test the appropriate low level audio circuit for an open.
3. Defective speaker - Replace the appropriate speaker.

With RPO U2K
1. Audio common circuit open. Test the audio common circuit for an open.
2. Replace the Digital Radio Receiver.