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.
Body Control Module: Service and Repair
2009 Mazda CX-9 FWD V6-3.7LSECTION Service and Repair
BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Remove the front scuff plate inner (LH). Front Scuff Plate Removal/Installation
3. Remove the front side trim (LH). Front Side Trim Removal/Installation
4. Remove the dashboard under cover. (Driver side) Dashboard Under Cover Removal/Installation
5. Set the hood release lever out of the way. Service and Repair
6. Remove in the order indicated in the table.
7. Install in the reverse order of removal.
Dashboard Wiring Harness C Removal Note
1. As shown in the figure, lift the tab in the direction of the arrow (1) using a tape-wrapped flathead screwdriver, and while keeping it lifted, pull it in the direction of the arrow (2) to remove.
BCM Removal Note
1. Raise the lower part of the BCM in the direction shown by the arrow and remove the pin with the BCM level.
RENDER: 1.0x
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.