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 MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 487 (INSTRUMENTATION/DRIVER INFO)INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODECHECK CODE INSPECTIONCHECK CODE 31
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Check code 31
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Check code 31
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.
CHECK CODE 31 DIAGNOSTIC PROCEDURES
| Check code 04 | Door switch ON/OFF signal | ||
|---|---|---|---|
| STEP | INSPECTION CONDITION | DISPLAY | ACTION |
| 1 | Remove the key from the steering lock, then reinsert the key into the steering lock after selecting check Code 31. (The key Reminder switch is on.) | on | Go to next step. |
| OFF | Verify that the voltage of instrument cluster terminal 2W is B+.
|
||
| 2 | Remove the key from the steering lock. (The key Reminder switch is off.) | on | Verify that the voltage of the instrument cluster terminal 2W is 1.OV or less.
|
| OFF | Input signal to the instrument cluster is normal. | ||
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.