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.
2003 Mini Cooper Base, Automatic CVTFACTORY OEM SERVICE PROCEDURE
Main Relay Testing: Notes
- Check Voltage Supply At Battery
- Test for Voltage at Fuse 34 (With key on)
- Check Voltage at KL 30 of Main Relay
- Check operation of Relay (Using relay adapter)
- Ground signal from EMS2000
- Voltage Drops across Relay (Relay Energized and Not Energized)
- Perform TEST PLAN on Power Supply
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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