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.
Circuit/System Description
The driver door module (DDM) or passenger door module (PDM) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. When the mirror is commanded up, voltage is supplied to the mirror vertical motor through the driver/passenger mirror motor right/down motors common circuit and ground is supplied through the driver/passenger mirror motor down control circuit. When the mirror is commanded down, voltage is supplied to the mirror vertical motor through the driver/passenger mirror motor down control circuit and ground is supplied through the driver/passenger mirror motor right/down motors common circuit.
Horizontal controls operate in the same manner with the driver/passenger mirror motor right/down motors common circuit supplying voltage and the driver/passenger mirror motor right control circuit supply a ground to the mirror horizontal motor when the mirror is commanded right. When the mirror is commanded left, voltage is supplied to the mirror horizontal motor through the driver/passenger mirror motor right control circuit and ground is supplied through the driver/passenger mirror motor right/down motors common circuit.
NO RELATED
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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.