Test P: The Dual Climate Control Seat Module (DCSM) Does Not Respond To The Scan Tool

PINPOINT TEST P: THE DUAL CLIMATE CONTROL SEAT MODULE (DCSM) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The dual climate control seat module (DCSM) 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 DCSM. The DCSM shares the MS-CAN with the instrument cluster (IC), the accessory protocol interface module (APIM), the smart junction box (SJB), the HVAC module (if equipped), the audio control module (ACM), the audio digital signal processing (DSP) module (if equipped), the satellite digital audio receiver system (SDARS) module (if equipped), the parking aid module (PAM) (if equipped), the rear entertainment module (RETM) (if equipped), the driver seat module (DSM) (if equipped), and the liftgate/trunk module (LTM) (if equipped). Voltage for the DCSM is provided by circuit SBB16 (VT/RD). Circuit GD145 (BK/BU) provides ground.

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

P1-P2:

P3-P4: