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

PINPOINT TEST M: 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. Voltage for the SDARS module is provided by circuit SBP15 (WH/RD). Circuit GD148 (BK/YE) provides ground.

The SDARS module shares the MS-CAN with the following modules:
- Accessory protocol interface module (APIM) (if equipped)
- Audio control module (ACM)
- Audio digital signal processing (DSP) module (if equipped)
- Driver seat module (DSM) (if equipped)
- Driver door module (DDM) (if equipped)
- Dual climate control seat module (DCSM) (if equipped)
- Heating ventilation air conditioning (HVAC) module (if equipped)
- Instrument cluster (IC)
- Parking aid module (PAM) (if equipped)
- Smart junction box (SJB)

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

M1:

M2-M3:

M4: