WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

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 simultaneously 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. The advantage of using multiplexing is to reduce the weight of the vehicle by reducing the number of redundant components and electrical wiring.

The vehicle has 3 module communication networks which are connected to the Data Link Connector (DLC), located under the driver side instrument panel:

High Speed Controller Area Network (HS-CAN)
Medium Speed Controller Area Network (MS-CAN)
Infotainment Controller Area Network (I-CAN) (4.2-inch and 8-inch touchscreen only)

NOTE: Vehicles with the optional 4.2-inch screen and 8-inch touchscreen audio units have an Infotainment Controller Area Network (I-CAN) that is connected to the Data Link Connector (DLC), but modules do not communicate directly with the diagnostic scan tool. The Instrument Panel Cluster (IPC) operates as the gateway for modules on the I-CAN to communicate with the diagnostic scan tool over the HS-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: Notes

Use the Manual With the Right Hardware

When to See a Mechanic