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

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

Normal Operation
The satellite digital audio receiver system (SDARS) module receives voltage through circuit SBP14 (BN/RD) and ground through circuit GD110 (BK/WH). Digital signals are received by the satellite radio antenna and sent to the SDARS module. The digital audio signals are then converted to analog and sent to the audio control module (ACM) or to the accessory protocol interface module (APIM) (if equipped).

If there is an open in the satellite antenna circuit, there will be no satellite audio. The ACM display will indicate a satellite antenna concern (the method varies according to the type of ACM) when the audio system is operated in satellite radio mode. To diagnose an open in the satellite antenna circuit, GO to Pinpoint Test F. Test F: Poor Reception/No Sound - Satellite Audio

The SDARS module transmits left and right channel audio signals. 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 SDARS module tones test.

In order for the satellite radio system to operate, messages are sent from the front controls interface module (FCIM) to the ACM when a button is pressed. The ACM responds with the appropriate function.

The SDARS module sends messages to the front display interface module (FDIM) in order to display satellite radio information on the display screen.

U0184-U0256:

This pinpoint test is intended to diagnose the following:
- Subscription status
- Wiring, terminals or connectors
- SDARS module
- APIM (if equipped)
- ACM

J1:

J2-J8:

J8-J11:

J11-J15: