Test F: The Satellite Audio Is Inoperative/Does Not Operate Correctly
PINPOINT TEST F: THE SATELLITE AUDIO IS INOPERATIVE/DOES NOT OPERATE CORRECTLYNormal Operation
The satellite digital audio receiver system (SDARS) module receives voltage through circuit SBP40 (VT/RD), and ground through circuit GD114 (BK/BU). Digital signals are received by the satellite antenna and sent to the SDARS module. If the vehicle is not equipped with a rear entertainment module (RETM), audio signals are sent directly to the audio control module (ACM). If equipped with a RETM, the audio signals are sent to the ACM through the RETM.
Circuits VME17 (GN), RME17 (GY), VME18 (VT), and RME18 (YE) transmit left and right channel audio signals to the ACM. When there is a fault on any of these circuits, the audio quality is reduced. If the circuits for a specific channel are shorted together, loss of audio on that entire channel will occur. This can be detected by using the Satellite Radio Tones Test.
It is important to note that a fault in the satellite antenna circuit will cause the satellite audio system to be inoperative. In this case, DTC B1031 or B1032 should set, and the ACM display should reflect that there is a satellite antenna fault. If a fault in the satellite antenna circuit is indicated, Go to Pinpoint Test G. Test G: Poor Reception - Satellite Audio
DTC U0184 (Lost Communication With Radio [ACM]) - sets when the SDARS module is missing messages from the ACM for greater than 5 seconds. This results in loss of satellite radio functionality.
DTC U0193 (Lost Communication With Digital Audio Control Module [SDARS]) - sets when the ACM is missing messages from the SDARS module for greater than 5 seconds. This results in loss of satellite radio functionality.
DTC U0196 (Lost Communication With Entertainment Control Module - Rear [AUX]) - sets when the SDARS module is missing messages from the RETM for greater than 5 seconds. This results in loss of satellite radio functionality.
This pinpoint test is intended to diagnose the following:
- Subscription status
- Wiring, terminals or connectors
- SDARS module
- RETM (if equipped)
- ACM
F1-F4:
F5-F7:
F8-F11:
F12:
