Test I: The Satellite Audio Is Inoperative/Does Not Operate Correctly

PINPOINT TEST I: THE SATELLITE AUDIO IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Normal Operation
The satellite digital audio receiver system (SDARS) module receives voltage through circuit 797 (LG/VT), and ground through circuit 694 (BK/LG). Digital signals are received by the satellite antenna and sent to the SDARS module, which converts the signals from digital to analog and sends them to the audio control module (ACM). The SDARS module and the ACM communicate using the controller area network (CAN) through circuits 832 (LB/PK) and 833 (TN).

Circuits 690 (GY), 798 (LG/RD), 799 (OG/BK), and 856 (VT) transmit left and right channel audio signal 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 bezel diagnostic test.

A fault in the satellite antenna circuit may cause the satellite audio to be completely inoperative. In this case, the ACM display should indicate a satellite antenna fault (the method varies by audio system), and DTC B1031 SAT or B1032 SAT should be set. To diagnose a satellite antenna fault, GO to Pinpoint Test J. Test J: Poor Reception - Satellite Audio

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SDARS module
- ACM

I1-I4:

I4-I6: