Test K: The Satellite Digital Audio Receiver System (SDARS) Module Does Not Respond To The Scan Tool

PINPOINT TEST K: THE SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) MODULE DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The satellite digital audio receiver system (SDARS) module 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 SDARS module. The SDARS module shares the MS-CAN with the instrument cluster (IC), the smart junction box (SJB), the heating ventilation air conditioning (HVAC) module (if equipped), the audio control module (ACM), the rear entertainment module (RETM) (if equipped), the driver seat module (DSM) (if equipped), the power running board (PRB) module (if equipped), and the parking aid module (PAM) (if equipped). Voltage for the SDARS module is provided by circuit SBB41 (RD). Circuit GD114 (BK/BU) provides ground.

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

K1-K2:

K3-K4: