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
TCS Off Switch Inspection
- Remove the TCS OFF switch. (See TCS OFF SWITCH REMOVAL/INSTALLATION .)
- Verify that the resistance between the TCS OFF switch terminals B and C is as indicated in the table.
- If not as indicated in the table, replace the TCS OFF switch.
RESISTANCE SPECIFICATIONTerminal Test condition Resistance (ohms) B-C Switch pressed 0 Switch released 1139.99-1163.01 - Apply battery voltage to TCS OFF switch terminal J, and connect terminal I to ground.
- Verify that the LED illuminates.
- If there is any malfunction, replace the TCS OFF switch.
Factory Service Tools
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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.
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