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.

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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 615 (CONTROL SYSTEM [BODY CONTROL MODULE))BODY CONTROL MODULE (BCM) INSPECTIONGENERATED PULSE (REFERENCE)PATTERN 2

2011 Mazda 3 Mazdaspeed, 2.3 3

Pattern 2

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Pattern 2

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Terminal: 2E (+) <=> body ground (-)
Oscilloscope setting: 5 V/DIV (Y), 200 μs/DIV (X), DC range

Fig 1: Oscilloscope Waveform Pulse Graph - Pattern 2
Courtesy of MAZDA MOTORS CORP.

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.