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.
2004 Kia Rio Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Main Relay: Inspection
- Remove cover from main fuse block.
- Place a finger on main relay.
- Verify that relay clicks when ignition switch is turned ON.
- Verify that main relay clicks when ignition switch is turned ON and OFF.
- Apply battery voltage (B+) to terminal 85 and ground terminal 86 of the relay.
- Check continuity of relay as shown in figure.
- If not as specified, replace main relay.
- Turn ignition switch OFF.
- Replace the cover on main fuse block.
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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