Hyundai 95230-2P030 Relay-Power

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A faulty relay can be removed and tested using a specific procedure or by a dealer service department or repair shop. Defective relays must be replaced as a unit.

To test a relay, connect an ohmmeter across the two terminals of the power circuit. Continuity should not be indicated. For a typical four-terminal normally open relay, connect an ohmmeter to the two terminals of the power circuit; the meter should indicate continuity when the relay is energized and no continuity when it is not. Then, connect a fused jumper wire between one control circuit terminal and the positive battery terminal, and another jumper wire between the other control circuit terminal and ground. The relay should click, and continuity should be indicated on the meter. If it doesn't click, try swapping the jumper wires on the control circuit terminals.

Relays transmit electrical signals to components such as the fuel injection system, horns, starter, and fog lamps using a low-current control circuit to open and close a high-current power circuit.