Schematic Reference: Radio/Audio System Schematics
Connector End View Reference: Entertainment Connector End Views
Diagnostic System Check - Vehicle
Always perform the Vehicle Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Important:
• The following information lists the most probable cause of the concern
to the least probable cause followed by the appropriate test for that condition. If
the list leads to the replacement of a component, always inspect for a poor connection
before proceeding with the replacement. Refer to
Testing for Intermittent Conditions and Poor Connections
and
Connector Repairs
in Wiring Systems. • The following procedure assumes that the distortion caused in the vehicle
speakers is only present when the disc player and video display (DPVD) is selected
as the audio source for the vehicle speakers.
With U42 and U66
- Right or left audio signal (+) open or shorted to battery positive voltage. Test the appropriate right or left audio signal (+) for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
- Distorted audio output from the DPVD. Replace the DPVD. Refer to Video with DVD Display Replacement .
Important: The following procedure assumes that the distortion caused in the vehicle speakers is only present when the digital radio receiver (DRR) is selected as the audio source for the vehicle speakers.
With U2K and U66
- Right or left audio signal (+) open or shorted to battery positive voltage. Test the appropriate right or left audio signal (+) for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
- Distorted audio output from the digital radio receiver. Replace the digital radio receiver. Refer to Control Module References in Computer/Integrating Systems.
