Gateway Module

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.

NOTE: The GWM, communicates with the 4 or 5 (optional) controller area networks (CAN). The OBDDLC is connected to the GWM, and is the direct interface with the scan tool.

The GWM is mounted behind the driver side knee bolster trim panel under the driver side instrument panel. A DLC connector is fitted to the GWM. The GWM acts as a central gateway to translate messages across all 4 or 5 (optional) vehicle controller area networks (CAN). The GWM is the only module on this vehicle with this ability. The GWM also serves as a termination module for each of the networks to which it is connected.

The 2 module communication networks connected to the DLC are HS-CAN1 (DIAG 1) and HS-CAN2 (DIAG 2). These 2 networks communicate directly with the diagnostic scan tool. The other 2 or 3 (optional) communication networks, communicate on the network, but do not communicate directly with the diagnostic scan tool. The GWM translates the messages from the HS-CAN3, HS-CAN4 (if equipped) and MS-CAN to the HS-CAN2 (DIAG 2), which transfers the signals to the diagnostic scan tool.

Courtesy of FORD MOTOR COMPANY