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Rear Window Defogger Relay: Inspection

  1. Disconnect the negative (-) battery terminal.
  2. Remove the crash pad lower panel. (Refer to the CRASH PAD )
  3. Remove the windshield deicer relay from the junction box.
  4. Check for continuity between the terminals.
  5. There should be continuity between the No.1 and No.4 terminal when power and ground are connected to the No.2 terminal and No.3 terminal.
  6. There should be no continuity between the No.1 terminal and No.4 terminal when power is disconnected.
    Fig 1: Identifying Rear Defogger Relay And Blower Relay Terminals
    G04881427Courtesy of HYUNDAI MOTOR CO.
    Fig 2: Identifying Rear Defogger Relay And Blower Relay Continuity Chart
    G04881518Courtesy of HYUNDAI MOTOR CO.
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