Test K: The Satellite Radio Receiver Does Not Respond to the Scan Tool

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

K1:

K1-K3:

K3-K4:

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 instrument cluster, the smart junction box (SJB), the electronic automatic temperature control (EATC) module (if equipped), the audio unit, the digital versatile disc (DVD) player (if equipped), the driver seat module (DSM) (if equipped), the power running board module (if equipped), and the parking aid module (if equipped). Voltage for the satellite radio receiver is provided by circuit SBB41 (RD). Circuit GD114 (BK/BU) provides ground.

Possible Causes
- Fuse
- Circuit GD114 (BK/BU) open
- Circuit SBB41 (RD) open
- Circuit VDB06 (GY/OG) open (MS-CAN +)
- Circuit VDB07 (VT/OG) open (MS-CAN -)
- Satellite radio receiver