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.

Overview

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Multiplexing allows 2 or more electronic modules (nodes) to communicate over a twisted wire pair [data (+) and data (-)] network. The information or messages that can be communicated on these wires consists of commands, status or data. Multiplexing reduces the weight of the vehicle by reducing the number of redundant components and electrical wiring.

The vehicle has 2 module communication networks connected to the remote DLC, located under the instrument panel. The communication networks are:

DIAG 1
DIAG 2

The vehicle has 4 or 5 (optional) communication networks that do not communicate directly with the diagnostic scan tool. The GWM translates the messages on these 4 or 5 (optional) networks and transfers the signals to the DIAG 1 and DIAG 2 circuits at the remote DLC. Messages communicated on the HS-CAN1 are communicated to the DIAG 1 connection, all other networks are translated to the DIAG 2 connection at the remote DLC. The communication networks are:

HS-CAN1
HS-CAN2
HS-CAN3
HS-CAN4 (optional)
MS-CAN

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Communications Network - Overview

Use the Manual With the Right Hardware

When to See a Mechanic