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

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

P1-P2:

P2-P3:

P4:

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 instrument cluster, the smart junction box (SJB), the electronic manual temperature control module (if equipped), the electronic automatic temperature control (EATC) module (if equipped), the audio unit, the THX(R) amplifier (if equipped), the satellite radio receiver (if equipped), the power running board module (if equipped), the parking aid module (if equipped), the power liftgate module (if equipped) and the climate controlled seat module (if equipped). Voltage for the DSM is provided by circuit SBB45 (GY/RD). Circuit GD143 (BK/VT) provides ground.

DTC U0208 - sets in a module which had attempted to communicate with the DSM and failed.

Possible Causes
- Fuse
- Circuit GD143 (BK/VT) open
- Circuit SBB45 (GY/RD) open
- Circuit VDB06 (GY/OG) open (MS-CAN +)
- Circuit VDB07 (VT/OG) open (MS-CAN -)
- DSM