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.
2021 Mazda CX-3 AWDFACTORY OEM SERVICE PROCEDURE
Charging System Warning Light
- Verify that the battery is fully charged. (See BATTERY INSPECTION .)
- Verify that the assembly condition of the drive belt is normal. (See DRIVE BELT INSPECTION .)
- Switch the ignition ON (engine off), verify that the charging system warning light illuminates.
- If it does not illuminate, inspect the charging system warning light and the wiring harness.
- If the charging system warning light and the wiring harness are normal, inspect the PCM. (See PCM INSPECTION .)
- If it does not illuminate, inspect the charging system warning light and the wiring harness.
- Verify that the charging system warning light turns off after the engine is started.
- If the charging system warning light does not turn off, perform the DTC inspection, then perform troubleshooting according to the corresponding diagnostic procedure. (See ON-BOARD DIAGNOSTIC TEST .) (See DTC TABLE .)
Factory Service Tools
Use the Manual With the Right Hardware
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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.