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 MANUALSKIA2000SEPHIA LS SEDAN L4-1.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSMAIN RELAY (COMPUTER/FUEL SYSTEM)TESTING AND INSPECTION
2000 Kia Sephia LS Sedan L4-1.8L
Main Relay (Computer/Fuel System): Testing and Inspection
2000 Kia Sephia LS Sedan L4-1.8LSECTION Testing and Inspection
1. Remove cover from main fuse block.
2. Place a finger on main relay.
3. Verify that relay clicks when ignition switch is turned ON.
4. Verify that main relay clicks when ignition switch is turned ON and OFF.
5. Apply battery voltage (B+) to terminal 85 and ground terminal 86 of the relay.
6. Check continuity of relay as shown.
7. If not as specified, replace main relay.
8. Turn ignition switch OFF.
9. Replace the cover on main fuse block.
2. Place a finger on main relay.
3. Verify that relay clicks when ignition switch is turned ON.
4. Verify that main relay clicks when ignition switch is turned ON and OFF.
5. Apply battery voltage (B+) to terminal 85 and ground terminal 86 of the relay.
6. Check continuity of relay as shown.
7. If not as specified, replace main relay.
8. Turn ignition switch OFF.
9. Replace the cover on main fuse block.
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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.