Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Component Description: PDM
For the power window function, the PDM receives power window commands from the passenger door window control switch or from the DDM through the MS-CAN.
For the power mirror functions, the PDM operates as follows:
- RH exterior mirror glass position by supplying voltage and ground to the exterior mirror motors based on messages from the DDM.
- When the heated mirror function is selected, it supplies voltage and ground to the RH exterior mirror glass heating element based on messages received from the FCIM.
- When the memory mirror function is selected, it supplies the voltage and ground to the RH mirror motor and monitors the potentiometers to determine the mirror glass position. Memory mirror positions are stored in the PDM memory.
For additional information:
- Refer to: Handles, Locks, Latches and Entry Systems - System Operation and Component Description .
- Refer to: Glass, Frames and Mechanisms - System Operation and Component Description .
- Refer to: Rear View Mirrors - System Operation and Component Description .
The PDM requires PMI when replaced.
For additional information, Refer to: Module Programming .
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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.
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