High Speed Controller Area Network 3 and 4 (HS-CAN3, HS-CAN4)

WARNING: This page is about a different car, the 2022 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

The HS-CAN3 and HS-CAN4 (if equipped) operate at a maximum data transfer speed of 500 Kbps and are designed for real time audio, multimedia and driver information transfer and control. Modules on the HS-CAN3 communicate using bussed messages. HS-CAN3 uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits, and allows sharing of information between all modules on the network.

The GWM is used as a gateway for the messages to transfer between the scan tool and the modules on the HS-CAN3 and HS-CAN4 (if equipped).

The GWM translates the diagnostic messages from the HS-CAN2 (DIAG 2) to the HS-CAN3 and HS-CAN4 (if equipped) and vice versa, allowing communication between the modules on the HS-CAN3 and HS-CAN4 (if equipped) and the scan tool.