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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 475 (ON-BOARD DIAGNOSTIC (MULTIPLEX COMMUNICATION SYSTEM))MULTIPLEX COMMUNICATION SYSTEMOUTLINE
2010 Mazda 5 Sport, 2.3 L, Standard
Multiplex Communication System: Outline
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Outline
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- If the controller area network (CAN) system is malfunctioning, read the DTCs of the following modules, using the WDS or equivalent to determine the malfunctioning system.
- PCM
- EPS control module
- TCM (AT)
- ABS HU/CM (with ABS)
- DSC HU/CM (with DSC)
- Steering angle sensor (with DSC)
- Keyless control module
- TPMS control module
- Instrument cluster
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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.