Test O: The Driver Seat Module (DSM) Does Not Respond To The Scan Tool

PINPOINT TEST O: THE DRIVER SEAT MODULE (DSM) DOES NOT RESPOND TO THE SCAN TOOL

O1-O2:

O3-O4:

Normal Operation
The DSM 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 DSM. The DSM shares the MS-CAN network with the smart junction box (SJB), the instrument cluster, the audio unit, the THX(R) amplifier (if equipped), the satellite radio receiver (if equipped), the driver door module (DDM) (if equipped), and the climate controlled seat module (if equipped). Voltage for the DSM is provided by circuit SBB15 (WH/RD). Circuit GD126 (BK/WH) provides ground.

Possible Causes
- Fuse
- Circuit GD126 (BK/WH) open
- Circuit SBB15 (WH/RD) open
- Circuit VDB06 (GY/OG) open (MS-CAN +)
- Circuit VDB07 (VT/OG) open (MS-CAN -)
- DSM