Network Message Chart

WARNING: This page is about a different car, the 2018 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Module Network Input Messages - PDM

Broadcast Message	Originating Module	Message Purpose
Passenger mirror command	DDM	When the exterior mirror control switch requests movement of the RH exterior mirror, the DDM sends the request to the PDM to drive the RH exterior mirror in the desired direction.

Module Network Input Messages - PDM

Broadcast Message	Originating Module	Message Purpose
Passenger mirror command	DDM	When the exterior mirror control switch requests movement of the RH exterior mirror, the DDM sends the request to the PDM to drive the RH exterior mirror in the desired direction.

Power Mirror Operation

When the LH or RH exterior mirror selected with the exterior mirror selection switch and the exterior mirror control switch is pressed up, down, left or right, the command is sent through a LIN circuit between the master window control switch and the DDM. If the LH mirror is selected, the DDM supplies voltage and ground to the appropriate LH exterior mirror motor. If the RH mirror is selected, the DDM sends the passenger mirror command message through the MS-CAN to the PDM. Based on the passenger mirror command message, the PDM supplies voltage and ground to the appropriate RH exterior mirror motor.

System Diagram - Exterior, Heated

Courtesy of FORD MOTOR COMPANY

Network Message Chart

Module Network Input Messages - BCM

Broadcast Message	Originating Module	Message Purpose
Defrost request	HVAC Module	When the driver turns the rear window defrost on or off, this request is sent from the HVAC module to the BCM to turn the rear window defrost on or off.

Module Network Input Messages - DDM and PDM

Broadcast Message	Originating Module	Message Purpose
Outer mirror defrost command	BCM	Based on the defrost request message from the HVAC module, the BCM uses this message to command the heated mirrors on or off.

Module Network Input Messages - PDM

Broadcast Message	Originating Module	Message Purpose
Passenger mirror command	DDM	When the exterior mirror control switch requests movement of the RH exterior mirror, the DDM sends the request to the PDM to drive the RH exterior mirror in the desired direction.

Power Mirror Operation

System Diagram - Exterior, Heated

Courtesy of FORD MOTOR COMPANY

Network Message Chart

Module Network Input Messages - BCM

Broadcast Message	Originating Module	Message Purpose
Defrost request	HVAC Module	When the driver turns the rear window defrost on or off, this request is sent from the HVAC module to the BCM to turn the rear window defrost on or off.

Module Network Input Messages - DDM and PDM

Broadcast Message	Originating Module	Message Purpose
Outer mirror defrost command	BCM	Based on the defrost request message from the HVAC module, the BCM uses this message to command the heated mirrors on or off.

Heated Exterior Mirror Operation

The rear window defrost switch controls operation of the heated exterior mirror glass. The heated exterior mirror glass only operates when the rear window defrost system is active. For a detailed description of the rear window defrost system operation, Refer to: WINDOWS AND GLASS - GLASS, FRAMES AND MECHANISMS .

Based on messages received from the BCM through the Medium Speed Controller Area Network (MS-CAN), the DDM controls the operation of the LH heated exterior mirror glass and the PDM controls the operation of the RH heated exterior mirror glass.

System Diagram - Exterior, Memory

Courtesy of FORD MOTOR COMPANY

Network Message Chart

Module Network Input Messages - DDM and PDM

Broadcast Message	Originating Module	Message Purpose
Mirror Position Store Request	DSM	Used to command the DDM and PDM to save the current mirror position to a specific memory preset.
Mirror Position Load Request	DSM	Used to command the DDM and PDM to recall a specific memory preset mirror position.

Module Network Input Messages - DSM

Broadcast Message	Originating Module	Message Purpose
Memory Recall Cancel Request	DDM	Used to cancel a memory recall in the event that the exterior mirror control switch is pressed in any direction during a memory recall.