Network Message Chart

DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) NETWORK INPUT MESSAGES CHART

Broadcast Message	Originating Module	Message Purpose
Climate control touchscreen and voice requests	Accessory Protocol Interface Module (APIM)	The climate control requests message contains the climate controlled seat system request information. When any climate controlled seat function is requested using the Front Display Interface Module (FDIM) (touchscreen), this input is used to activate the climate controlled seat system.

ACCESSORY PROTOCOL INTERFACE MODULE (APIM) MODULE NETWORK INPUT MESSAGES CHART

Broadcast Message	Originating Module	Message Purpose
Climate controlled seat set status	Dual Climate Controlled Seat Module (DCSM)	The climate controlled seat set status message provides the current status of the climate controlled seats to the Accessory Protocol Interface Module (APIM). The Accessory Protocol Interface Module (APIM) then updates the displayed status of the climate controlled seat buttons on the Front Display Interface Module (FDIM) (touchscreen).

When the climate control seat buttons are activated on the touchscreen interface, the Accessory Protocol Interface Module (APIM) sends the climate controlled seat commands to the Front Controls Interface Module (FCIM) using the Infotainment Controller Area Network (I-CAN). The Front Controls Interface Module (FCIM) sends the request message to the Instrument Panel Cluster (IPC) using the Infotainment Controller Area Network (I-CAN). The Instrument Panel Cluster (IPC) sends the request message to the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN). Finally, the Body Control Module (BCM) sends the climate controlled seat commands to the Dual Climate Controlled Seat Module (DCSM) using the Medium Speed Controller Area Network (MS-CAN).