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Servicing The Electrical System

  1. Prior to servicing the electrical system, be sure to turn off the ignition switch and disconnect the battery ground cable.
    NOTE: When the battery cable is removed, any diagnostic trouble code retained by the computer will be cleared. Therefore, if necessary, read the diagnostic code before removing the battery cable.
    Fig 1: Disconnecting Battery Ground Cable
    G04801084Courtesy of HYUNDAI MOTOR CO.
  2. Attach the wiring harnesses with clamps so that there is no slack. However, for any harness which passes the engine or other vibrating parts of the vehicle, allow some slack within a range that does not allow the engine vibrations to cause the harness to come into contact with any of the surrounding parts and then secure the harness by using a clamp.
    Fig 2: Identifying Cables Clamp
    G04801085Courtesy of HYUNDAI MOTOR CO.
  3. If any section of a wiring harness interferes with the edge of a part, or a corner, wrap the section of the harness with tape or something similar in order to protect if from damage.
    Fig 3: Identifying Wiring Harness Section
    G04801086Courtesy of HYUNDAI MOTOR CO.
  4. When installing any parts, be careful not to pinch or damage any of the wiring harness.
    Fig 4: Caution For Components
    G04801087Courtesy of HYUNDAI MOTOR CO.
  5. Never throw relays, sensors or electrical parts, or expose them to strong shock.
    Fig 5: Caution For Electrical Parts
    G04801088Courtesy of HYUNDAI MOTOR CO.
  6. The electronic parts used in the computer, relays, etc. are readily damaged by heat. If there is a need for service operations that may cause the temperature to exceed 80°C (176°F), remove the electronic parts beforehand.
    Fig 6: Caution For Electronic Components
    G04801089Courtesy of HYUNDAI MOTOR CO.
  7. Loose connectors cause problems. Make sure that the connectors are always securely fastened.
    Fig 7: Identifying Connectors
    G04801090Courtesy of HYUNDAI MOTOR CO.
  8. When disconnecting a connector, be sure to grip only the connector, not the wires.
    Fig 8: Caution For Connectors Do Not Wires
    G04801091Courtesy of HYUNDAI MOTOR CO.
  9. Disconnect connectors which have catches by pressing in the direction of the arrows shown the illustration.
    Fig 9: Pressing Connector
    G04801092Courtesy of HYUNDAI MOTOR CO.
  10. Connect connectors which have catches by inserting the connectors until they make a clicking sound.
    Fig 10: Inserting Connectors
    G04801093Courtesy of HYUNDAI MOTOR CO.
  11. When using a circuit tester to check continuity or voltage on connector terminals, insert the test probe into the harness side. If the connector is a sealed connector, insert the test probe through the hole in the rubber cap until it contacts the terminal, being careful not to damage the insulation of the wires.
    Fig 11: Inserting Test Probe Into Harness Side
    G04801094Courtesy of HYUNDAI MOTOR CO.
  12. To avoid overloading the wiring, take the electrical current load of the optional equipment into consideration, and determine the appropriate wire size.
    WIRE SIZE SPECIFICATION

    Nominal size SAE gauge No. Permissible current
    In engine compartment Other areas
    0.3mm2 AWG 22 - 5A
    0.5mm2 AWG 20 7A 13A
    0.85mm2 AWG 18 9A 17A
    1.25mm2 AWG 16 12A 22A
    2.0mm2 AWG 14 16A 30A
    3.0mm2 AWG 12 21A 40A
    5.0mm2 AWG 10 31A 54A
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