Test M: The Satellite Radio Receiver Does Not Respond To The Scan Tool

PINPOINT TEST M: THE SATELLITE RADIO RECEIVER DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The satellite radio receiver communicates with the scan tool through the medium speed controller area network (MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the satellite radio receiver. The satellite radio receiver shares the MS-CAN network with the smart junction box (SJB), the audio unit, the electronic automatic temperature control (EATC) or electronic manual temperature control (EMTC) module, the driver seat module (DSM), the digital versatile disc (DVD) player, the power liftgate module and the instrument cluster. Voltage for the satellite radio receiver is provided by circuit SBP03 (BU/RD). Ground is provided by circuit GD103 (BK/BU).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Satellite radio receiver

M1:

M2-M3:

M4: