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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSMAZDA2009CX-9 FWD V6-3.7LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICS
2009 Mazda CX-9 FWD V6-3.7L
Component Tests and General Diagnostics
2009 Mazda CX-9 FWD V6-3.7LSECTION Component Tests and General Diagnostics
BODY CONTROL MODULE (BCM) INSPECTION
1. Remove the front scuff plate inner (LH). (See Front Scuff Plate Removal/Installation)
2. Remove the front side trim (LH). Front Side Trim Removal/Installation
3. Remove the dashboard under cover. (Driver side) Dashboard Under Cover Removal/Installation
4. Set the hood release lever out of the way. Service and Repair
5. Remove the BCM with the connector connected.
6. Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.
- If the voltage or continuity is not as specified in the Terminal Voltage Table, inspect the parts under "Inspection item (s)".
- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the BCM.
Terminal Voltage Table (Reference)
Terminal Voltage Table (Reference) (Part 1):
Terminal Voltage Table (Reference) (Part 2):
Terminal Voltage Table (Reference) (Part 3):
Terminal Voltage Table (Reference) (Part 4):
Terminal Voltage Table (Reference) (Part 5):
Terminal Voltage Table (Reference) (Part 6):
Terminal Voltage Table (Reference) (Part 7):
Terminal Voltage Table (Reference) (Part 8):
Terminal Voltage Table (Reference) (Part 9):
Terminal Voltage Table (Reference) (Part 10):
Terminal Voltage Table (Reference) (Part 11):
*1
With theft-deterrent system
*2
With seat warmer system
*3
With inverter
*4
With seat position memory function
*5
With sunroof system
*6
With car-navigation system
*7
Without advanced keyless system
*8
Without AWD
*9
With DRL
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.