Loss of Communication on Private Bus - SDARS

Test 1 - 2:

Test 3 - 6:

Test 7 - 9:

SYMPTOM
LOSS OF COMMUNICATION ON PRIVATE BUS - SDARS

WHEN MONITORED
With the ignition in run, and the IOD fuse installed.

SET CONDITION
The radio does not receive any messages from the Satellite Receiver for atleast 12 seconds.

POSSIBLE CAUSES
- Audio bus 2 short to ground
- Audio bus 2 open
- Audio bus 2 short to voltage
- Audio bus 1 open
- Audio bus 1 short to ground
- Audio bus 1 short to voltage
- Radio internal failure