Heated Steering Wheel System Network Communication
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The controls and indicators for the heated steering wheel system are in are located in the FDIM (touch screen) only. The FDIM does not communicate on any network and is connected directly to the Accessory Protocol Interface Module (APIM).
When the FDIM controls are used, the APIM sends a heated steering wheel request message to the HSWM using the following message path:
- The APIM sends the request over the Infotainment Controller Area Network (I-CAN) to the Front Controls Interface Module (FCIM).
- The FCIM sends the request over the I-CAN to the Instrument Panel Cluster (IPC) module.
- The IPC module then sends the request to the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN).
- Lastly, the BCM sends the requests to the HSWM over the Medium Speed Controller Area Network (MS-CAN).
The messaging path is followed in reverse for status updates that need to be sent from the HSWM to the APIM .