Network Message Chart: Notes
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
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: Glass, Frames and Mechanisms - Vehicles With: One-Touch Open and Close Front Windows - System Operation and Component Description
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
Network Message Chart